diff --git a/src/compat/_internal/tags.ts b/src/compat/_internal/tags.ts
index 328ecf3e7..1fc392923 100644
--- a/src/compat/_internal/tags.ts
+++ b/src/compat/_internal/tags.ts
@@ -24,3 +24,4 @@ export const int32ArrayTag = '[object Int32Array]';
 export const bigInt64ArrayTag = '[object BigInt64Array]';
 export const float32ArrayTag = '[object Float32Array]';
 export const float64ArrayTag = '[object Float64Array]';
+export const abortSignalTag = '[object AbortSignal]';
diff --git a/src/predicate/isEqual.spec.ts b/src/predicate/isEqual.spec.ts
index 196292b07..2ec55243f 100644
--- a/src/predicate/isEqual.spec.ts
+++ b/src/predicate/isEqual.spec.ts
@@ -112,4 +112,18 @@ describe('isEqual', () => {
 
     expect(isEqual(buffer3, buffer4)).toBe(false);
   });
+
+  it('should compare AbortSignal objects', () => {
+    const controller1 = new AbortController();
+    const controller2 = new AbortController();
+
+    const signal1 = controller1.signal;
+    const signal2 = controller2.signal;
+
+    expect(isEqual(signal1, signal2)).toBe(true);
+
+    controller1.abort();
+
+    expect(isEqual(signal1, signal2)).toBe(false);
+  });
 });
diff --git a/src/predicate/isEqualWith.ts b/src/predicate/isEqualWith.ts
index 1d742c17f..2b3cd1082 100644
--- a/src/predicate/isEqualWith.ts
+++ b/src/predicate/isEqualWith.ts
@@ -2,6 +2,7 @@ import { isPlainObject } from './isPlainObject.ts';
 import { getSymbols } from '../compat/_internal/getSymbols.ts';
 import { getTag } from '../compat/_internal/getTag.ts';
 import {
+  abortSignalTag,
   argumentsTag,
   arrayBufferTag,
   arrayTag,
@@ -188,6 +189,10 @@ function areObjectsEqual(
     case functionTag: {
       return a === b;
     }
+
+    case abortSignalTag: {
+      return a.aborted === b.aborted;
+    }
   }
 
   stack = stack ?? new Map();