diff --git a/.github/actions/test_gem/action.yml b/.github/actions/test_gem/action.yml
index c26f0d703..4f6b15fe4 100644
--- a/.github/actions/test_gem/action.yml
+++ b/.github/actions/test_gem/action.yml
@@ -62,6 +62,14 @@ runs:
           fi
         fi
 
+    # Install ImageMagick for active_storage testing.
+    # Unfortunately, from ubuntu-24.04, ImageMagick is no longer pre-installed in Github Actions.
+    # See https://github.com/actions/runner-images/issues/10772
+    - name: Install ImageMagick for active_storage testing
+      if: "${{ inputs.gem == 'opentelemetry-instrumentation-active_storage' }}"
+      shell: bash
+      run: sudo apt update && sudo apt install -y imagemagick
+
     # Install ruby and bundle dependencies and cache!
     # ...but not for appraisals, sadly.
     - name: Install Ruby ${{ inputs.ruby }} with dependencies
diff --git a/.github/workflows/ci-instrumentation.yml b/.github/workflows/ci-instrumentation.yml
index cf938e48f..50f8e9708 100644
--- a/.github/workflows/ci-instrumentation.yml
+++ b/.github/workflows/ci-instrumentation.yml
@@ -27,6 +27,7 @@ jobs:
           - active_job
           - active_model_serializers
           - active_record
+          - active_storage
           - active_support
           - all
           - aws_sdk
@@ -91,6 +92,7 @@ jobs:
           [[ "${{ matrix.gem }}" == "action_view"              ]] && echo "skip=true" >> $GITHUB_OUTPUT
           [[ "${{ matrix.gem }}" == "active_model_serializers" ]] && echo "skip=true" >> $GITHUB_OUTPUT
           [[ "${{ matrix.gem }}" == "active_record"            ]] && echo "skip=true" >> $GITHUB_OUTPUT
+          [[ "${{ matrix.gem }}" == "active_storage"           ]] && echo "skip=true" >> $GITHUB_OUTPUT
           [[ "${{ matrix.gem }}" == "active_support"           ]] && echo "skip=true" >> $GITHUB_OUTPUT
           [[ "${{ matrix.gem }}" == "aws_sdk"                  ]] && echo "skip=true" >> $GITHUB_OUTPUT
           [[ "${{ matrix.gem }}" == "aws_lambda"               ]] && echo "skip=true" >> $GITHUB_OUTPUT
diff --git a/.toys/.data/releases.yml b/.toys/.data/releases.yml
index a90d626e3..ccb62f516 100644
--- a/.toys/.data/releases.yml
+++ b/.toys/.data/releases.yml
@@ -30,6 +30,10 @@ commit_lint:
 #  *  changelog_path: Path to CHANGLEOG.md relative to the gem directory.
 #     (Required only if it is not in the expected location.)
 gems:
+  - name: opentelemetry-instrumentation-active_storage
+    directory: instrumentation/active_storage
+    version_constant: [OpenTelemetry, Instrumentation, ActiveStorage, VERSION]
+
   - name: opentelemetry-instrumentation-gruf
     directory: instrumentation/gruf
     version_constant: [OpenTelemetry, Instrumentation, Gruf, VERSION]
diff --git a/instrumentation/active_storage/.rubocop.yml b/instrumentation/active_storage/.rubocop.yml
new file mode 100644
index 000000000..1248a2f82
--- /dev/null
+++ b/instrumentation/active_storage/.rubocop.yml
@@ -0,0 +1 @@
+inherit_from: ../../.rubocop.yml
diff --git a/instrumentation/active_storage/.yardopts b/instrumentation/active_storage/.yardopts
new file mode 100644
index 000000000..1875c0c85
--- /dev/null
+++ b/instrumentation/active_storage/.yardopts
@@ -0,0 +1,9 @@
+--no-private
+--title=OpenTelemetry Active Storage Instrumentation
+--markup=markdown
+--main=README.md
+./lib/opentelemetry/instrumentation/**/*.rb
+./lib/opentelemetry/instrumentation.rb
+-
+README.md
+CHANGELOG.md
diff --git a/instrumentation/active_storage/Appraisals b/instrumentation/active_storage/Appraisals
new file mode 100644
index 000000000..38fcef500
--- /dev/null
+++ b/instrumentation/active_storage/Appraisals
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+%w[6.1.0 7.0.0 7.1.0].each do |version|
+  appraise "activestorage-#{version}" do
+    gem 'sqlite3', '~> 1.4'
+    gem 'image_processing', '~> 1.2'
+    gem 'rails', "~> #{version}"
+  end
+end
+
+if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('3.1.0')
+  %w[7.2.0].each do |version|
+    appraise "activestorage-#{version}" do
+      gem 'sqlite3', '~> 1.4'
+      gem 'image_processing', '~> 1.2'
+      gem 'rails', "~> #{version}"
+    end
+  end
+
+  appraise 'activestorage-latest' do
+    gem 'sqlite3', '>= 2.1'
+    gem 'image_processing', '~> 1.2'
+    gem 'rails'
+  end
+end
diff --git a/instrumentation/active_storage/CHANGELOG.md b/instrumentation/active_storage/CHANGELOG.md
new file mode 100644
index 000000000..6e60ce45e
--- /dev/null
+++ b/instrumentation/active_storage/CHANGELOG.md
@@ -0,0 +1 @@
+# Release History: opentelemetry-instrumentation-active_storage
diff --git a/instrumentation/active_storage/Gemfile b/instrumentation/active_storage/Gemfile
new file mode 100644
index 000000000..2ededff74
--- /dev/null
+++ b/instrumentation/active_storage/Gemfile
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+source 'https://rubygems.org'
+
+gemspec
+
+group :test do
+  gem 'opentelemetry-instrumentation-base', path: '../base'
+  gem 'opentelemetry-instrumentation-active_support', path: '../active_support'
+end
diff --git a/instrumentation/active_storage/LICENSE b/instrumentation/active_storage/LICENSE
new file mode 100644
index 000000000..1ef7dad2c
--- /dev/null
+++ b/instrumentation/active_storage/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
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+      You may add Your own copyright statement to Your modifications and
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+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
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+
+   Copyright The OpenTelemetry Authors
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
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+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
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diff --git a/instrumentation/active_storage/README.md b/instrumentation/active_storage/README.md
new file mode 100644
index 000000000..f606e9989
--- /dev/null
+++ b/instrumentation/active_storage/README.md
@@ -0,0 +1,96 @@
+# OpenTelemetry ActiveStorage Instrumentation
+
+The ActiveStorage instrumentation is a community-maintained instrumentation for the ActiveStorage portion of the [Ruby on Rails][rails-home] web-application framework.
+
+## How do I get started?
+
+Install the gem using:
+
+```bash
+# Install just the ActiveStorage instrumentation
+gem install opentelemetry-instrumentation-active_storage
+# Install the ActiveStorage instrumentation along with the rest of the Rails-related instrumentation
+gem install opentelemetry-instrumentation-rails
+```
+
+Or, if you use [bundler][bundler-home], include `opentelemetry-instrumentation-active_storage` in your `Gemfile`.
+
+## Usage
+
+To use the instrumentation, call `use` with the name of the instrumentation:
+
+```ruby
+OpenTelemetry::SDK.configure do |c|
+  # Use only the ActiveStorage instrumentation
+  c.use 'OpenTelemetry::Instrumentation::ActiveStorage'
+  # Use the ActiveStorage instrumentation along with the rest of the Rails-related instrumentation
+  c.use 'OpenTelemetry::Instrumentation::Rails'
+end
+```
+
+Alternatively, you can also call `use_all` to install all the available instrumentation.
+
+```ruby
+OpenTelemetry::SDK.configure do |c|
+  c.use_all
+end
+```
+
+## Active Support Instrumentation
+
+This instrumentation relies entirely on `ActiveSupport::Notifications` and registers a custom Subscriber that listens to relevant events to report as spans.
+
+See the table below for details of what [Rails Framework Hook Events](https://guides.rubyonrails.org/active_support_instrumentation.html#active-storage) are recorded by this instrumentation:
+
+| Event Name | Creates Span? | Notes |
+| - | - | - |
+| `preview.active_storage` | :white_check_mark: | Creates an `internal` span |
+| `transform.active_storage` | :white_check_mark: | Creates an `internal` span |
+| `analyze.active_storage` | :white_check_mark: | Creates an `internal` span |
+| `service_upload.active_storage` | :white_check_mark: | Creates an `internal` span |
+| `service_streaming_download.active_storage` | :white_check_mark: | Creates an `internal` span |
+| `service_download_chunk.active_storage` | :white_check_mark: | Creates an `internal` span |
+| `service_download.active_storage` | :white_check_mark: | Creates an `internal` span |
+| `service_delete.active_storage` | :white_check_mark: | Creates an `internal` span |
+| `service_delete_prefixed.active_storage` | :white_check_mark: | Creates an `internal` span |
+| `service_exist.active_storage` | :white_check_mark: | Creates an `internal` span |
+| `service_url.active_storage` | :white_check_mark: | Creates an `internal` span |
+| `service_update_metadata.active_storage` | :white_check_mark: | Creates an `internal` span |
+
+### Options
+
+ActiveStorage instrumentation doesn't expose secure tokens and urls by default, but if they are needed, simply use `:key` and `:url` option:
+
+```ruby
+OpenTelemetry::SDK.configure do |c|
+  c.use 'OpenTelemetry::Instrumentation::ActiveStorage', { key: :include, url: :include }
+end
+```
+
+## Semantic Conventions
+
+Internal spans are named using the name of the `ActiveSupport` event that was provided (e.g. `service_upload.active_storage`).
+
+Attributes attached to each event payload are prefixed with `active_storage.` (e.g. `active_storage.checksum`).
+
+## Examples
+
+Example usage can be seen in the `./example/trace_demonstration.rb` file [here](https://github.com/open-telemetry/opentelemetry-ruby-contrib/blob/main/instrumentation/active_storage/example/trace_demonstration.rb)
+
+## How can I get involved?
+
+The `opentelemetry-instrumentation-active_storage` gem source is [on github][repo-github], along with related gems including `opentelemetry-api` and `opentelemetry-sdk`.
+
+The OpenTelemetry Ruby gems are maintained by the OpenTelemetry Ruby special interest group (SIG). You can get involved by joining us on our [GitHub Discussions][discussions-url], [Slack Channel][slack-channel] or attending our weekly meeting. See the [meeting calendar][community-meetings] for dates and times. For more information on this and other language SIGs, see the OpenTelemetry [community page][ruby-sig].
+
+## License
+
+The `opentelemetry-instrumentation-active_storage` gem is distributed under the Apache 2.0 license. See [LICENSE][license-github] for more information.
+
+[bundler-home]: https://bundler.io
+[repo-github]: https://github.com/open-telemetry/opentelemetry-ruby
+[license-github]: https://github.com/open-telemetry/opentelemetry-ruby-contrib/blob/main/LICENSE
+[ruby-sig]: https://github.com/open-telemetry/community#ruby-sig
+[community-meetings]: https://github.com/open-telemetry/community#community-meetings
+[slack-channel]: https://cloud-native.slack.com/archives/C01NWKKMKMY
+[discussions-url]: https://github.com/open-telemetry/opentelemetry-ruby/discussions
diff --git a/instrumentation/active_storage/Rakefile b/instrumentation/active_storage/Rakefile
new file mode 100644
index 000000000..1a64ba842
--- /dev/null
+++ b/instrumentation/active_storage/Rakefile
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'bundler/gem_tasks'
+require 'rake/testtask'
+require 'yard'
+require 'rubocop/rake_task'
+
+RuboCop::RakeTask.new
+
+Rake::TestTask.new :test do |t|
+  t.libs << 'test'
+  t.libs << 'lib'
+  t.test_files = FileList['test/**/*_test.rb']
+end
+
+YARD::Rake::YardocTask.new do |t|
+  t.stats_options = ['--list-undoc']
+end
+
+if RUBY_ENGINE == 'truffleruby'
+  task default: %i[test]
+else
+  task default: %i[test rubocop yard]
+end
diff --git a/instrumentation/active_storage/example/trace_demonstration.rb b/instrumentation/active_storage/example/trace_demonstration.rb
new file mode 100644
index 000000000..95feb1a36
--- /dev/null
+++ b/instrumentation/active_storage/example/trace_demonstration.rb
@@ -0,0 +1,97 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'bundler/inline'
+
+gemfile(true) do
+  source 'https://rubygems.org'
+
+  gem 'rails'
+  gem 'sqlite3'
+  gem 'opentelemetry-sdk'
+  gem 'opentelemetry-instrumentation-active_support', path: '../../active_support'
+  gem 'opentelemetry-instrumentation-active_storage', path: '../'
+end
+
+require 'active_storage/engine'
+
+# TraceRequestApp is a minimal Rails application inspired by the Rails
+# bug report template for action controller.
+# The configuration is compatible with Rails 6.0
+class TraceRequestApp < Rails::Application
+  config.root = __dir__
+  config.hosts << 'example.org'
+  credentials.secret_key_base = 'secret_key_base'
+
+  config.eager_load = false
+
+  config.logger = Logger.new($stdout)
+  Rails.logger  = config.logger
+
+  config.active_storage.service = :development
+  config.active_storage.service_configurations = {
+    development: {
+      service: 'Disk',
+      root: Dir.mktmpdir('active_storage_tests')
+    }
+  }
+
+  # Override to avoid reading config/database.yml
+  def config.database_configuration
+    {
+      development: {
+        adapter: 'sqlite3',
+        database: ':memory:'
+      }
+    }
+  end
+end
+
+# Simple setup for demonstration purposes, simple span processor should not be
+# used in a production environment
+span_processor = OpenTelemetry::SDK::Trace::Export::SimpleSpanProcessor.new(
+  OpenTelemetry::SDK::Trace::Export::ConsoleSpanExporter.new
+)
+
+OpenTelemetry::SDK.configure do |c|
+  c.use 'OpenTelemetry::Instrumentation::ActiveStorage'
+  c.add_span_processor(span_processor)
+end
+
+Rails.application.initialize!
+
+ActiveRecord::Base.logger = Logger.new(STDOUT)
+ActiveRecord::Schema.define do
+  create_table :active_storage_blobs, force: true do |t|
+    t.string   :key,        null: false
+    t.string   :filename,   null: false
+    t.string   :content_type
+    t.text     :metadata
+    t.string   :service_name, null: false
+    t.bigint   :byte_size,  null: false
+    t.string   :checksum,   null: false
+    t.datetime :created_at, null: false
+    t.index [:key], unique: true
+  end
+
+  create_table :active_storage_attachments, force: true do |t|
+    t.string     :name,     null: false
+    t.references :record,   null: false, polymorphic: true, index: false
+    t.references :blob,     null: false
+
+    t.datetime :created_at, null: false
+    t.index %i[record_type record_id name blob_id], name: 'index_active_storage_attachments_uniqueness', unique: true
+  end
+end
+
+ActiveStorage::Blob.create_and_upload!(
+  io: StringIO.new('test file content'),
+  filename: 'test.txt',
+  content_type: 'text/plain'
+)
+
+# To run this example run the `ruby` command with this file
+# Example: ruby trace_demonstration.rb
diff --git a/instrumentation/active_storage/lib/opentelemetry-instrumentation-active_storage.rb b/instrumentation/active_storage/lib/opentelemetry-instrumentation-active_storage.rb
new file mode 100644
index 000000000..c034f140f
--- /dev/null
+++ b/instrumentation/active_storage/lib/opentelemetry-instrumentation-active_storage.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require_relative 'opentelemetry/instrumentation'
diff --git a/instrumentation/active_storage/lib/opentelemetry/instrumentation.rb b/instrumentation/active_storage/lib/opentelemetry/instrumentation.rb
new file mode 100644
index 000000000..b736806ca
--- /dev/null
+++ b/instrumentation/active_storage/lib/opentelemetry/instrumentation.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+# OpenTelemetry is an open source observability framework, providing a
+# general-purpose API, SDK, and related tools required for the instrumentation
+# of cloud-native software, frameworks, and libraries.
+#
+# The OpenTelemetry module provides global accessors for telemetry objects.
+# See the documentation for the `opentelemetry-api` gem for details.
+module OpenTelemetry
+  # Instrumentation should be able to handle the case when the library is not installed on a user's system.
+  module Instrumentation
+  end
+end
+
+require_relative 'instrumentation/active_storage'
diff --git a/instrumentation/active_storage/lib/opentelemetry/instrumentation/active_storage.rb b/instrumentation/active_storage/lib/opentelemetry/instrumentation/active_storage.rb
new file mode 100644
index 000000000..a671fda42
--- /dev/null
+++ b/instrumentation/active_storage/lib/opentelemetry/instrumentation/active_storage.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'opentelemetry'
+require 'opentelemetry-instrumentation-base'
+
+module OpenTelemetry
+  module Instrumentation
+    # Contains the OpenTelemetry instrumentation for the ActiveStorage gem
+    module ActiveStorage
+    end
+  end
+end
+
+require_relative 'active_storage/instrumentation'
+require_relative 'active_storage/version'
diff --git a/instrumentation/active_storage/lib/opentelemetry/instrumentation/active_storage/instrumentation.rb b/instrumentation/active_storage/lib/opentelemetry/instrumentation/active_storage/instrumentation.rb
new file mode 100644
index 000000000..9ac800af0
--- /dev/null
+++ b/instrumentation/active_storage/lib/opentelemetry/instrumentation/active_storage/instrumentation.rb
@@ -0,0 +1,128 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+module OpenTelemetry
+  module Instrumentation
+    module ActiveStorage
+      # The {OpenTelemetry::Instrumentation::ActiveStorage::Instrumentation} class contains logic to detect and install the ActiveStorage instrumentation
+      #
+      # Installation and configuration of this instrumentation is done within the
+      # {https://www.rubydoc.info/gems/opentelemetry-sdk/OpenTelemetry/SDK#configure-instance_method OpenTelemetry::SDK#configure}
+      # block, calling {https://www.rubydoc.info/gems/opentelemetry-sdk/OpenTelemetry%2FSDK%2FConfigurator:use use()}
+      # or {https://www.rubydoc.info/gems/opentelemetry-sdk/OpenTelemetry%2FSDK%2FConfigurator:use_all use_all()}.
+      #
+      # ## Configuration keys and options
+      #
+      # ### `:disallowed_notification_payload_keys`
+      #
+      # Specifies an array of keys that should be excluded from the notification payload as span attributes.
+      #
+      # ### `:notification_payload_transform`
+      #
+      # - `proc` **default** `nil`
+      #
+      # Specifies custom proc used to extract span attributes form the notification payload.
+      # Use this to rename keys, extract nested values, or perform any other custom logic.
+      #
+      # ### `:key`
+      #
+      # - `symbol` **default** `:omit`
+      #
+      # Specifies whether to include secure token in the notification payload. Valid values are `:omit` and `:include`.
+      #
+      # ### `:url`
+      #
+      # - `symbol` **default** `:omit`
+      #
+      # Specifies whether to include url in the notification payload. Valid values are `:omit` and `:include`.
+      #
+      # @example An explicit default configuration
+      #   OpenTelemetry::SDK.configure do |c|
+      #     c.use_all({
+      #       'OpenTelemetry::Instrumentation::ActionMailer' => {
+      #         disallowed_notification_payload_keys: [],
+      #         notification_payload_transform: nil,
+      #         key: :omit,
+      #         url: :omit,
+      #       },
+      #     })
+      #   end
+      class Instrumentation < OpenTelemetry::Instrumentation::Base
+        MINIMUM_VERSION = Gem::Version.new('6.1.0')
+
+        install do |_config|
+          resolve_key
+          resolve_url
+          resolve_payload_transform
+          require_dependencies
+        end
+
+        present do
+          defined?(::ActiveStorage)
+        end
+
+        compatible do
+          gem_version >= MINIMUM_VERSION
+        end
+
+        option :disallowed_notification_payload_keys, default: [],  validate: :array
+        option :notification_payload_transform,       default: nil, validate: :callable
+        option :key,                                  default: :omit, validate: %I[omit include]
+        option :url,                                  default: :omit, validate: %I[omit include]
+
+        private
+
+        def gem_version
+          ::ActiveStorage.version
+        end
+
+        def resolve_key
+          return unless _config[:key] == :omit
+
+          _config[:disallowed_notification_payload_keys].append 'active_storage.key'
+        end
+
+        def resolve_url
+          return unless _config[:url] == :omit
+
+          _config[:disallowed_notification_payload_keys].append 'active_storage.url'
+        end
+
+        def resolve_payload_transform
+          if _config[:notification_payload_transform].nil?
+            transform_attributes = ->(payload) { transform_payload(payload) }
+          else
+            original_callable = _config[:notification_payload_transform]
+            transform_attributes = lambda do |payload|
+              new_payload = transform_payload(payload)
+              user_payload = original_callable.call(new_payload)
+              if user_payload.instance_of?(Hash)
+                user_payload
+              else
+                OpenTelemetry.logger.error("ActiveStorage: transformed payload is #{user_payload.class} (require Hash)")
+                new_payload
+              end
+            end
+          end
+          _config[:notification_payload_transform] = transform_attributes
+        end
+
+        def _config
+          ActiveStorage::Instrumentation.instance.config
+        end
+
+        # add `active_storage.` prefix to each attribute
+        def transform_payload(payload)
+          payload.transform_keys { |k| "active_storage.#{k}" }
+        end
+
+        def require_dependencies
+          require_relative 'railtie'
+        end
+      end
+    end
+  end
+end
diff --git a/instrumentation/active_storage/lib/opentelemetry/instrumentation/active_storage/railtie.rb b/instrumentation/active_storage/lib/opentelemetry/instrumentation/active_storage/railtie.rb
new file mode 100644
index 000000000..0863ecbf7
--- /dev/null
+++ b/instrumentation/active_storage/lib/opentelemetry/instrumentation/active_storage/railtie.rb
@@ -0,0 +1,57 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+module OpenTelemetry
+  module Instrumentation
+    module ActiveStorage
+      SUBSCRIPTIONS = %w[
+        preview.active_storage
+        transform.active_storage
+        analyze.active_storage
+        service_upload.active_storage
+        service_streaming_download.active_storage
+        service_download_chunk.active_storage
+        service_download.active_storage
+        service_delete.active_storage
+        service_delete_prefixed.active_storage
+        service_exist.active_storage
+        service_url.active_storage
+        service_update_metadata.active_storage
+      ].freeze
+
+      # This Railtie sets up subscriptions to relevant ActiveStorage notifications
+      class Railtie < ::Rails::Railtie
+        config.after_initialize do
+          ::OpenTelemetry::Instrumentation::ActiveSupport::Instrumentation.instance.install({})
+          subscribe
+        end
+
+        class << self
+          def subscribe
+            SUBSCRIPTIONS.each do |subscription_name|
+              ::OpenTelemetry::Instrumentation::ActiveSupport.subscribe(
+                ActiveStorage::Instrumentation.instance.tracer,
+                subscription_name,
+                config[:notification_payload_transform],
+                config[:disallowed_notification_payload_keys]
+              )
+            end
+          end
+
+          def unsubscribe
+            SUBSCRIPTIONS.each do |subscription_name|
+              ::ActiveSupport::Notifications.unsubscribe(subscription_name)
+            end
+          end
+
+          def config
+            ActiveStorage::Instrumentation.instance.config
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/instrumentation/active_storage/lib/opentelemetry/instrumentation/active_storage/version.rb b/instrumentation/active_storage/lib/opentelemetry/instrumentation/active_storage/version.rb
new file mode 100644
index 000000000..7a85736de
--- /dev/null
+++ b/instrumentation/active_storage/lib/opentelemetry/instrumentation/active_storage/version.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+module OpenTelemetry
+  module Instrumentation
+    module ActiveStorage
+      VERSION = '0.0.0'
+    end
+  end
+end
diff --git a/instrumentation/active_storage/opentelemetry-instrumentation-active_storage.gemspec b/instrumentation/active_storage/opentelemetry-instrumentation-active_storage.gemspec
new file mode 100644
index 000000000..d539c28e4
--- /dev/null
+++ b/instrumentation/active_storage/opentelemetry-instrumentation-active_storage.gemspec
@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+lib = File.expand_path('lib', __dir__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require 'opentelemetry/instrumentation/active_storage/version'
+
+Gem::Specification.new do |spec|
+  spec.name        = 'opentelemetry-instrumentation-active_storage'
+  spec.version     = OpenTelemetry::Instrumentation::ActiveStorage::VERSION
+  spec.authors     = ['OpenTelemetry Authors']
+  spec.email       = ['cncf-opentelemetry-contributors@lists.cncf.io']
+
+  spec.summary     = 'ActiveStorage instrumentation for the OpenTelemetry framework'
+  spec.description = 'ActiveStorage instrumentation for the OpenTelemetry framework'
+  spec.homepage    = 'https://github.com/open-telemetry/opentelemetry-ruby-contrib'
+  spec.license     = 'Apache-2.0'
+
+  spec.files = Dir.glob('lib/**/*.rb') +
+               Dir.glob('*.md') +
+               ['LICENSE', '.yardopts']
+  spec.require_paths = ['lib']
+  spec.required_ruby_version = '>= 3.0'
+
+  spec.add_dependency 'opentelemetry-api', '~> 1.4.0'
+  spec.add_dependency 'opentelemetry-instrumentation-active_support', '~> 0.7'
+  spec.add_dependency 'opentelemetry-instrumentation-base', '~> 0.22.6'
+
+  spec.add_development_dependency 'appraisal', '~> 2.5'
+  spec.add_development_dependency 'bundler', '~> 2.4'
+  spec.add_development_dependency 'minitest', '~> 5.0'
+  spec.add_development_dependency 'opentelemetry-sdk', '~> 1.1'
+  spec.add_development_dependency 'opentelemetry-test-helpers', '~> 0.3'
+  spec.add_development_dependency 'rake', '~> 13.0'
+  spec.add_development_dependency 'rubocop', '~> 1.69.1'
+  spec.add_development_dependency 'rubocop-performance', '~> 1.23.0'
+  spec.add_development_dependency 'simplecov', '~> 0.17.1'
+  spec.add_development_dependency 'webmock', '~> 3.24.0'
+  spec.add_development_dependency 'yard', '~> 0.9'
+
+  if spec.respond_to?(:metadata)
+    spec.metadata['changelog_uri'] = "https://rubydoc.info/gems/#{spec.name}/#{spec.version}/file/CHANGELOG.md"
+    spec.metadata['source_code_uri'] = 'https://github.com/open-telemetry/opentelemetry-ruby-contrib/tree/main/instrumentation/active_storage'
+    spec.metadata['bug_tracker_uri'] = 'https://github.com/open-telemetry/opentelemetry-ruby-contrib/issues'
+    spec.metadata['documentation_uri'] = "https://rubydoc.info/gems/#{spec.name}/#{spec.version}"
+  end
+end
diff --git a/instrumentation/active_storage/test/fixtures/sample.pdf b/instrumentation/active_storage/test/fixtures/sample.pdf
new file mode 100644
index 000000000..c01805e89
Binary files /dev/null and b/instrumentation/active_storage/test/fixtures/sample.pdf differ
diff --git a/instrumentation/active_storage/test/fixtures/sample.png b/instrumentation/active_storage/test/fixtures/sample.png
new file mode 100644
index 000000000..293a1f43b
Binary files /dev/null and b/instrumentation/active_storage/test/fixtures/sample.png differ
diff --git a/instrumentation/active_storage/test/opentelemetry/instrumentation/active_storage/instrumentation_test.rb b/instrumentation/active_storage/test/opentelemetry/instrumentation/active_storage/instrumentation_test.rb
new file mode 100644
index 000000000..e69d0df4e
--- /dev/null
+++ b/instrumentation/active_storage/test/opentelemetry/instrumentation/active_storage/instrumentation_test.rb
@@ -0,0 +1,108 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'test_helper'
+
+require_relative '../../../../lib/opentelemetry/instrumentation/active_storage'
+
+describe OpenTelemetry::Instrumentation::ActiveStorage do
+  let(:instrumentation) { OpenTelemetry::Instrumentation::ActiveStorage::Instrumentation.instance }
+  let(:payload) do
+    {
+      checksum: 'BC3HWOZ8gHaD2PfLOgZP0w==',
+      service: 'S3'
+    }
+  end
+
+  it 'has #name' do
+    _(instrumentation.name).must_equal 'OpenTelemetry::Instrumentation::ActiveStorage'
+  end
+
+  it 'has #version' do
+    _(instrumentation.version).wont_be_nil
+    _(instrumentation.version).wont_be_empty
+  end
+
+  describe '#install' do
+    it 'accepts argument' do
+      _(instrumentation.install({})).must_equal(true)
+      instrumentation.instance_variable_set(:@installed, false)
+    end
+  end
+
+  describe '#install with default options' do
+    it 'with default options' do
+      _(instrumentation.config[:disallowed_notification_payload_keys]).wont_be_empty
+      _(instrumentation.config[:key]).must_equal :omit
+      _(instrumentation.config[:url]).must_equal :omit
+    end
+  end
+
+  describe '#resolve_key' do
+    it 'with include' do
+      original_config = instrumentation.instance_variable_get(:@config)
+      modified_config = original_config.dup
+      modified_config[:key] = :include
+      modified_config[:disallowed_notification_payload_keys] = []
+      instrumentation.instance_variable_set(:@config, modified_config)
+
+      instrumentation.send(:resolve_key)
+      _(instrumentation.config[:disallowed_notification_payload_keys].size).must_equal 0
+
+      instrumentation.instance_variable_set(:@config, original_config)
+    end
+  end
+
+  describe '#resolve_url' do
+    it 'with include' do
+      original_config = instrumentation.instance_variable_get(:@config)
+      modified_config = original_config.dup
+      modified_config[:url] = :include
+      modified_config[:disallowed_notification_payload_keys] = []
+      instrumentation.instance_variable_set(:@config, modified_config)
+
+      instrumentation.send(:resolve_url)
+      _(instrumentation.config[:disallowed_notification_payload_keys].size).must_equal 0
+
+      instrumentation.instance_variable_set(:@config, original_config)
+    end
+  end
+
+  describe '#resolve_payload_transform' do
+    it 'with user-defined payload' do
+      original_config = instrumentation.instance_variable_get(:@config)
+      modified_config = original_config.dup
+
+      modified_config[:notification_payload_transform] = ->(payload) { payload['active_storage.checksum'] = 'fake_checksum' }
+      instrumentation.instance_variable_set(:@config, modified_config)
+
+      instrumentation.send(:resolve_payload_transform)
+      payload = { checksum: 'real_checksum' }
+
+      tranformed_payload = instrumentation.config[:notification_payload_transform].call(payload)
+
+      _(tranformed_payload['active_storage.checksum']).must_equal 'fake_checksum'
+
+      instrumentation.instance_variable_set(:@config, original_config)
+    end
+
+    it 'without user-defined payload' do
+      transformed_payload = instrumentation.config[:notification_payload_transform].call(payload)
+
+      _(transformed_payload['active_storage.checksum']).must_equal 'BC3HWOZ8gHaD2PfLOgZP0w=='
+      _(transformed_payload['active_storage.service']).must_equal 'S3'
+    end
+  end
+
+  describe '#transform_payload' do
+    it 'adds active_storage. prefix to payload' do
+      transformed_payload = instrumentation.send(:transform_payload, payload)
+
+      _(transformed_payload['active_storage.checksum']).must_equal 'BC3HWOZ8gHaD2PfLOgZP0w=='
+      _(transformed_payload['active_storage.service']).must_equal 'S3'
+    end
+  end
+end
diff --git a/instrumentation/active_storage/test/opentelemetry/instrumentation/active_storage/subscription_test.rb b/instrumentation/active_storage/test/opentelemetry/instrumentation/active_storage/subscription_test.rb
new file mode 100644
index 000000000..73724ddf2
--- /dev/null
+++ b/instrumentation/active_storage/test/opentelemetry/instrumentation/active_storage/subscription_test.rb
@@ -0,0 +1,360 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'test_helper'
+require 'opentelemetry-instrumentation-active_support'
+
+describe OpenTelemetry::Instrumentation::ActiveStorage do
+  let(:exporter) { EXPORTER }
+  let(:spans) { exporter.finished_spans }
+  let(:instrumentation) { OpenTelemetry::Instrumentation::ActiveStorage::Instrumentation.instance }
+  let(:key_png) { 'sample.png' }
+  let(:blob_png) do
+    ActiveStorage::Blob.stub(:generate_unique_secure_token, key_png) do
+      file = File.open("#{Dir.pwd}/test/fixtures/sample.png")
+      ActiveStorage::Blob.create_and_upload!(
+        io: file,
+        filename: 'sample.png',
+        content_type: 'image/png'
+      )
+    end
+  end
+  let(:key_pdf) { 'sample.pdf' }
+  let(:blob_pdf) do
+    ActiveStorage::Blob.stub(:generate_unique_secure_token, key_pdf) do
+      file = File.open("#{Dir.pwd}/test/fixtures/sample.pdf")
+      ActiveStorage::Blob.create_and_upload!(
+        io: file,
+        filename: 'sample.pdf',
+        content_type: 'application/pdf'
+      )
+    end
+  end
+
+  before do
+    AppConfig.initialize_app
+    OpenTelemetry::Instrumentation::ActiveStorage::Railtie.unsubscribe
+    exporter.reset
+  end
+
+  describe 'service_upload.active_storage' do
+    describe 'with default configuration' do
+      it 'generates a service_upload span' do
+        with_subscribe do
+          _(blob_png).wont_be_nil
+        end
+
+        _(spans.length).must_equal(1)
+        span = spans.find { |s| s.name == 'service_upload.active_storage' }
+
+        _(span).wont_be_nil
+
+        _(span.attributes['active_storage.key']).must_be_nil
+        _(span.attributes['active_storage.checksum']).must_equal('9NwXsO4K/DCBz1BoXsIHiA==')
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+      end
+    end
+
+    describe 'with custom configuration' do
+      it 'with key: :include' do
+        with_configuration(key: :include, disallowed_notification_payload_keys: []) do
+          with_subscribe do
+            _(blob_png).wont_be_nil
+          end
+        end
+
+        _(spans.length).must_equal(1)
+        span = spans.find { |s| s.name == 'service_upload.active_storage' }
+
+        _(span).wont_be_nil
+
+        _(span.attributes['active_storage.key']).must_equal(key_png)
+        _(span.attributes['active_storage.checksum']).must_equal('9NwXsO4K/DCBz1BoXsIHiA==')
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+      end
+    end
+  end
+
+  describe 'service_streaming_download.active_storage' do
+    describe 'with default configuration' do
+      it 'generates a service_streaming_download span' do
+        with_subscribe do
+          blob_png.download { |chunk| _(chunk).must_be(:present?) }
+        end
+
+        _(spans.length).must_equal(2)
+        span = spans.find { |s| s.name == 'service_streaming_download.active_storage' }
+
+        _(span).wont_be_nil
+
+        _(span.attributes['active_storage.key']).must_be_nil
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+      end
+    end
+
+    describe 'with custom configuration' do
+      it 'with key: :include' do
+        with_configuration(key: :include, disallowed_notification_payload_keys: []) do
+          with_subscribe do
+            blob_png.download { |chunk| _(chunk).must_be(:present?) }
+          end
+        end
+
+        _(spans.length).must_equal(2)
+        span = spans.find { |s| s.name == 'service_streaming_download.active_storage' }
+
+        _(span).wont_be_nil
+
+        _(span.attributes['active_storage.key']).must_equal(key_png)
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+      end
+    end
+  end
+
+  describe 'service_download_chunk.active_storage' do
+    describe 'with default configuration' do
+      it 'generates a service_download_chunk span' do
+        with_subscribe do
+          return unless blob_png.respond_to?(:download_chunk)
+
+          blob_png.download_chunk(0..1024)
+        end
+
+        _(spans.length).must_equal(2)
+        span = spans.find { |s| s.name == 'service_download_chunk.active_storage' }
+
+        _(span).wont_be_nil
+
+        _(span.attributes['active_storage.key']).must_be_nil
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+      end
+    end
+
+    describe 'with custom configuration' do
+      it 'with key: :include' do
+        with_configuration(key: :include, disallowed_notification_payload_keys: []) do
+          with_subscribe do
+            return unless blob_png.respond_to?(:download_chunk)
+
+            blob_png.download_chunk(0..1024)
+          end
+        end
+
+        _(spans.length).must_equal(2)
+        span = spans.find { |s| s.name == 'service_download_chunk.active_storage' }
+
+        _(span).wont_be_nil
+
+        _(span.attributes['active_storage.key']).must_equal(key_png)
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+      end
+    end
+  end
+
+  describe 'service_download.active_storage' do
+    describe 'with default configuration' do
+      it 'generates a service_download span' do
+        with_subscribe do
+          _(blob_png.download).must_be(:present?)
+        end
+
+        _(spans.length).must_equal(2)
+        span = spans.find { |s| s.name == 'service_download.active_storage' }
+
+        _(span).wont_be_nil
+
+        _(span.attributes['active_storage.key']).must_be_nil
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+      end
+    end
+
+    describe 'with custom configuration' do
+      it 'with key: :include' do
+        with_configuration(key: :include, disallowed_notification_payload_keys: []) do
+          with_subscribe do
+            _(blob_png.download).must_be(:present?)
+          end
+        end
+
+        _(spans.length).must_equal(2)
+        span = spans.find { |s| s.name == 'service_download.active_storage' }
+
+        _(span).wont_be_nil
+
+        _(span.attributes['active_storage.key']).must_equal(key_png)
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+      end
+    end
+  end
+
+  describe 'service_delete.active_storage' do
+    describe 'with default configuration' do
+      it 'generates a service_delete span' do
+        with_subscribe do
+          blob_pdf.delete
+        end
+
+        _(spans.length).must_equal(2)
+        span = spans.find { |s| s.name == 'service_delete.active_storage' }
+
+        _(span).wont_be_nil
+        _(span.attributes['active_storage.key']).must_be_nil
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+      end
+    end
+
+    describe 'with custom configuration' do
+      it 'with key: :include' do
+        with_configuration(key: :include, disallowed_notification_payload_keys: []) do
+          with_subscribe do
+            blob_pdf.delete
+          end
+        end
+
+        _(spans.length).must_equal(2)
+        span = spans.find { |s| s.name == 'service_delete.active_storage' }
+
+        _(span).wont_be_nil
+        _(span.attributes['active_storage.key']).must_equal(key_pdf)
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+      end
+    end
+  end
+
+  describe 'service_delete_prefixed.active_storage' do
+    it 'generates a service_delete_prefixed span' do
+      with_subscribe do
+        ActiveStorage::Blob.service.delete_prefixed('sample')
+      end
+
+      _(spans.length).must_equal(1)
+      span = spans.find { |s| s.name == 'service_delete_prefixed.active_storage' }
+
+      _(span).wont_be_nil
+
+      _(span.attributes['active_storage.prefix']).must_equal('sample')
+      _(span.attributes['active_storage.service']).must_equal('Disk')
+    end
+  end
+
+  describe 'service_exist.active_storage' do
+    describe 'with default configuration' do
+      it 'generates a service_exist span' do
+        with_subscribe do
+          _(ActiveStorage::Blob.service).wont_be(:exist?, 'key')
+        end
+
+        _(spans.length).must_equal(1)
+        span = spans.find { |s| s.name == 'service_exist.active_storage' }
+
+        _(span).wont_be_nil
+        _(span.attributes['active_storage.key']).must_be_nil
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+        _(span.attributes['active_storage.exist']).must_equal(false)
+      end
+    end
+
+    describe 'with custom configuration' do
+      it 'with key: :include' do
+        with_configuration(key: :include, disallowed_notification_payload_keys: []) do
+          with_subscribe do
+            _(ActiveStorage::Blob.service).wont_be(:exist?, 'key')
+          end
+        end
+
+        _(spans.length).must_equal(1)
+        span = spans.find { |s| s.name == 'service_exist.active_storage' }
+
+        _(span).wont_be_nil
+        _(span.attributes['active_storage.key']).must_equal('key')
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+        _(span.attributes['active_storage.exist']).must_equal(false)
+      end
+    end
+  end
+
+  describe 'service_url.active_storage' do
+    describe 'with default configuration' do
+      it 'generates a service_url span' do
+        with_subscribe do
+          _(blob_png.url).must_be(:present?)
+        end
+
+        _(spans.length).must_equal(2)
+        span = spans.find { |s| s.name == 'service_url.active_storage' }
+
+        _(span).wont_be_nil
+        _(span.attributes['active_storage.key']).must_be_nil
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+        _(span.attributes['active_storage.url']).must_be_nil
+      end
+    end
+
+    describe 'with custom configuration' do
+      it 'with key: :include' do
+        with_configuration(key: :include, url: :include, disallowed_notification_payload_keys: []) do
+          with_subscribe do
+            _(blob_png.url).must_be(:present?)
+          end
+        end
+
+        _(spans.length).must_equal(2)
+        span = spans.find { |s| s.name == 'service_url.active_storage' }
+
+        _(span).wont_be_nil
+        _(span.attributes['active_storage.key']).must_equal(key_png)
+        _(span.attributes['active_storage.service']).must_equal('Disk')
+        _(span.attributes['active_storage.url']).must_match(%r{^http://example\.com/rails/active_storage/disk/.*/sample.png})
+      end
+    end
+  end
+
+  describe 'preview.active_storage' do
+    it 'generates a preview span' do
+      with_subscribe do
+        _(blob_pdf.preview(resize_to_limit: [50, 50]).processed).must_be(:present?)
+      end
+
+      _(spans.length >= 4).must_equal(true)
+      span = spans.find { |s| s.name == 'preview.active_storage' }
+
+      _(span).wont_be_nil
+    end
+  end
+
+  describe 'transform.active_storage' do
+    it 'generates a transform span' do
+      with_subscribe do
+        _(blob_png.variant(resize_to_limit: [50, 50]).processed).must_be(:present?)
+      end
+
+      _(spans.length).must_equal(5)
+      span = spans.find { |s| s.name == 'transform.active_storage' }
+
+      _(span).wont_be_nil
+    end
+  end
+
+  # NOTE: The test for service_update_metadata.active_storage is skipped because this event is only for GCS service.
+  # https://github.com/rails/rails/blob/fa9cf269191c5077de1abdd1e3f934fbeaf2a5d0/guides/source/active_support_instrumentation.md?plain=1#L928
+
+  def with_configuration(values, &block)
+    original_config = instrumentation.instance_variable_get(:@config)
+    modified_config = original_config.merge(values)
+    instrumentation.instance_variable_set(:@config, modified_config)
+
+    yield
+  ensure
+    instrumentation.instance_variable_set(:@config, original_config)
+  end
+
+  def with_subscribe(&block)
+    OpenTelemetry::Instrumentation::ActiveStorage::Railtie.subscribe
+    yield
+  ensure
+    OpenTelemetry::Instrumentation::ActiveStorage::Railtie.unsubscribe
+  end
+end
diff --git a/instrumentation/active_storage/test/test_helper.rb b/instrumentation/active_storage/test/test_helper.rb
new file mode 100644
index 000000000..4f2f48b57
--- /dev/null
+++ b/instrumentation/active_storage/test/test_helper.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+ENV['RAILS_ENV'] = 'test'
+
+require 'bundler/setup'
+Bundler.require(:default, :development, :test)
+
+require 'active_storage'
+require 'minitest/autorun'
+require 'test_helpers/app_config'
+
+# global opentelemetry-sdk setup:
+EXPORTER = OpenTelemetry::SDK::Trace::Export::InMemorySpanExporter.new
+span_processor = OpenTelemetry::SDK::Trace::Export::SimpleSpanProcessor.new(EXPORTER)
+
+OpenTelemetry::SDK.configure do |c|
+  c.error_handler = ->(exception:, message:) { raise(exception || message) }
+  c.logger = Logger.new($stderr, level: ENV.fetch('OTEL_LOG_LEVEL', 'fatal').to_sym)
+  c.use 'OpenTelemetry::Instrumentation::ActiveStorage'
+  c.add_span_processor span_processor
+end
diff --git a/instrumentation/active_storage/test/test_helpers/app_config.rb b/instrumentation/active_storage/test/test_helpers/app_config.rb
new file mode 100644
index 000000000..354731134
--- /dev/null
+++ b/instrumentation/active_storage/test/test_helpers/app_config.rb
@@ -0,0 +1,109 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'active_storage/engine'
+
+class TestApp < Rails::Application
+  initializer :activestorage do
+    ActiveStorage::Engine.config.active_storage.service_configurations = {
+      test: {
+        service: 'Disk',
+        root: Dir.mktmpdir('active_storage_tests')
+      }
+    }
+  end
+
+  # Override to avoid reading config/database.yml
+  def config.database_configuration
+    {
+      test: {
+        adapter: 'sqlite3',
+        database: ':memory:'
+      }
+    }
+  end
+end
+
+require_relative 'test_previewer'
+
+module AppConfig
+  extend self
+
+  def initialize_app
+    new_app = TestApp.new
+    new_app.config.secret_key_base = 'secret_key_base'
+
+    # Ensure we don't see this Rails warning when testing
+    new_app.config.eager_load = false
+    new_app.config.active_support.to_time_preserves_timezone = :zone
+
+    # Prevent tests from creating log/*.log
+    level = ENV.fetch('OTEL_LOG_LEVEL', 'fatal').to_sym
+    new_app.config.logger = Logger.new($stderr, level: level)
+    new_app.config.log_level = level
+
+    new_app.config.filter_parameters = [:param_to_be_filtered]
+
+    new_app.config.hosts << 'example.org'
+
+    new_app.config.active_storage.service = :test
+    new_app.config.active_storage.previewers = [TestPreviewer]
+
+    apply_rails_7_configs(new_app) if /^7|8\./.match?(Rails.version)
+
+    new_app.initialize!
+
+    ActiveRecord::Migration.verbose = false
+    ActiveRecord::Schema.define do
+      create_table :active_storage_blobs, force: true do |t|
+        t.string   :key,        null: false
+        t.string   :filename,   null: false
+        t.string   :content_type
+        t.text     :metadata
+        t.string   :service_name, null: false
+        t.bigint   :byte_size,  null: false
+        t.string   :checksum,   null: false
+        t.datetime :created_at, null: false
+        t.index [:key], unique: true
+      end
+
+      create_table :active_storage_attachments, force: true do |t|
+        t.string     :name,     null: false
+        t.references :record,   null: false, polymorphic: true, index: false
+        t.references :blob,     null: false
+
+        t.datetime :created_at, null: false
+        t.index %i[record_type record_id name blob_id], name: 'index_active_storage_attachments_uniqueness', unique: true
+      end
+    end
+
+    case Rails.version
+    when /^6\.1/
+      ActiveStorage::Current.host = 'http://example.com'
+    when /^7|8\./
+      ActiveStorage::Current.url_options = { host: 'http://example.com' }
+    end
+
+    new_app
+  end
+
+  private
+
+  def apply_rails_7_configs(application)
+    # Required in Rails 7
+    # Unfreeze values which may have been frozen on previous initializations.
+    ActiveSupport::Dependencies.autoload_paths =
+      ActiveSupport::Dependencies.autoload_paths.dup
+    ActiveSupport::Dependencies.autoload_once_paths =
+      ActiveSupport::Dependencies.autoload_once_paths.dup
+
+    application.routes.draw do
+      scope ActiveStorage.routes_prefix do
+        get '/disk/:encoded_key/*filename' => 'active_storage/disk#show', as: :rails_disk_service
+      end
+    end
+  end
+end
diff --git a/instrumentation/active_storage/test/test_helpers/test_previewer.rb b/instrumentation/active_storage/test/test_helpers/test_previewer.rb
new file mode 100644
index 000000000..5097ce01d
--- /dev/null
+++ b/instrumentation/active_storage/test/test_helpers/test_previewer.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+# TestPreviewer does not require dependencies like MuPDF and Poppler, so when testing, you can replace
+# config.active_storage.previewers with this class to test the preview hook with minimal dependencies.
+class TestPreviewer < ActiveStorage::Previewer
+  def self.accept?(blob)
+    blob.content_type.start_with?('application/pdf')
+  end
+
+  def preview(**options)
+    download_blob_to_tempfile do |input|
+      draw_sample_image input do |_output|
+        file = File.open("#{Dir.pwd}/test/fixtures/sample.png")
+        yield io: file, filename: 'sample.png', content_type: 'image/png', **options
+      end
+    end
+  end
+
+  private
+
+  def draw_sample_image(file, &block)
+    draw 'echo', '"test previewer called"', &block
+  end
+end
diff --git a/instrumentation/all/Gemfile b/instrumentation/all/Gemfile
index 30808d503..89d8bceeb 100644
--- a/instrumentation/all/Gemfile
+++ b/instrumentation/all/Gemfile
@@ -8,6 +8,7 @@ source 'https://rubygems.org'
 
 gemspec
 
+gem 'opentelemetry-instrumentation-active_storage', path: '../active_storage'
 group :test do
   Dir.entries('../../helpers')
      .select { |entry| File.directory?(File.join('../../helpers', entry)) }
diff --git a/instrumentation/all/lib/opentelemetry/instrumentation/all.rb b/instrumentation/all/lib/opentelemetry/instrumentation/all.rb
index b53195678..dce4710c7 100644
--- a/instrumentation/all/lib/opentelemetry/instrumentation/all.rb
+++ b/instrumentation/all/lib/opentelemetry/instrumentation/all.rb
@@ -4,6 +4,7 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
+require 'opentelemetry-instrumentation-active_storage'
 require 'opentelemetry-instrumentation-gruf'
 require 'opentelemetry-instrumentation-trilogy'
 require 'opentelemetry-instrumentation-active_support'
diff --git a/instrumentation/all/opentelemetry-instrumentation-all.gemspec b/instrumentation/all/opentelemetry-instrumentation-all.gemspec
index 2f60d7f6b..f953f47fa 100644
--- a/instrumentation/all/opentelemetry-instrumentation-all.gemspec
+++ b/instrumentation/all/opentelemetry-instrumentation-all.gemspec
@@ -26,6 +26,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
   spec.required_ruby_version = '>= 3.0'
 
+  spec.add_dependency 'opentelemetry-instrumentation-active_storage', '~> 0.0.0'
   spec.add_dependency 'opentelemetry-instrumentation-active_model_serializers', '~> 0.21.0'
   spec.add_dependency 'opentelemetry-instrumentation-aws_lambda', '~> 0.1.0'
   spec.add_dependency 'opentelemetry-instrumentation-aws_sdk', '~> 0.7.0'