diff --git a/packages/expect/src/jest-utils.ts b/packages/expect/src/jest-utils.ts
index 63b3a402a..bd6a2e4ba 100644
--- a/packages/expect/src/jest-utils.ts
+++ b/packages/expect/src/jest-utils.ts
@@ -159,6 +159,16 @@ function eq(
     // RegExps are compared by their source patterns and flags.
     case '[object RegExp]':
       return a.source === b.source && a.flags === b.flags
+    case '[object Temporal.Instant]':
+    case '[object Temporal.ZonedDateTime]':
+    case '[object Temporal.PlainDateTime]':
+    case '[object Temporal.PlainDate]':
+    case '[object Temporal.PlainTime]':
+    case '[object Temporal.PlainYearMonth]':
+    case '[object Temporal.PlainMonthDay]':
+      return a.equals(b)
+    case '[object Temporal.Duration]':
+      return a.toString() === b.toString()
   }
   if (typeof a !== 'object' || typeof b !== 'object') {
     return false
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 40b279711..7eb56caa1 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -1294,6 +1294,9 @@ importers:
       sweetalert2:
         specifier: ^11.21.2
         version: 11.21.2
+      temporal-polyfill:
+        specifier: ~0.3.0
+        version: 0.3.0
       tinyrainbow:
         specifier: 'catalog:'
         version: 2.0.0
@@ -8277,6 +8280,12 @@ packages:
     resolution: {integrity: sha512-aoBAniQmmwtcKp/7BzsH8Cxzv8OL736p7v1ihGb5e9DJ9kTwGWHrQrVB5+lfVDzfGrdRzXch+ig7LHaY1JTOrg==}
     engines: {node: '>=8'}
 
+  temporal-polyfill@0.3.0:
+    resolution: {integrity: sha512-qNsTkX9K8hi+FHDfHmf22e/OGuXmfBm9RqNismxBrnSmZVJKegQ+HYYXT+R7Ha8F/YSm2Y34vmzD4cxMu2u95g==}
+
+  temporal-spec@0.3.0:
+    resolution: {integrity: sha512-n+noVpIqz4hYgFSMOSiINNOUOMFtV5cZQNCmmszA6GiVFVRt3G7AqVyhXjhCSmowvQn+NsGn+jMDMKJYHd3bSQ==}
+
   tempy@0.6.0:
     resolution: {integrity: sha512-G13vtMYPT/J8A4X2SjdtBTphZlrp1gKv6hZiOjw14RCWg6GbHuQBGtjlx75xLbYV/wEc0D7G5K4rxKP/cXk8Bw==}
     engines: {node: '>=10'}
@@ -16750,6 +16759,12 @@ snapshots:
 
   temp-dir@2.0.0: {}
 
+  temporal-polyfill@0.3.0:
+    dependencies:
+      temporal-spec: 0.3.0
+
+  temporal-spec@0.3.0: {}
+
   tempy@0.6.0:
     dependencies:
       is-stream: 2.0.1
diff --git a/test/core/package.json b/test/core/package.json
index 4b0cc1e88..25a49cc03 100644
--- a/test/core/package.json
+++ b/test/core/package.json
@@ -30,6 +30,7 @@
     "react": "^19.1.0",
     "react-18": "npm:react@18.3.1",
     "sweetalert2": "^11.21.2",
+    "temporal-polyfill": "~0.3.0",
     "tinyrainbow": "catalog:",
     "tinyspy": "^1.1.1",
     "url": "^0.11.4",
diff --git a/test/core/test/expect.test.ts b/test/core/test/expect.test.ts
index c0e0d71a5..6947be4be 100644
--- a/test/core/test/expect.test.ts
+++ b/test/core/test/expect.test.ts
@@ -1,5 +1,6 @@
 import type { Tester } from '@vitest/expect'
 import { getCurrentTest } from '@vitest/runner'
+import { Temporal } from 'temporal-polyfill'
 import { describe, expect, expectTypeOf, test, vi } from 'vitest'
 
 describe('expect.soft', () => {
@@ -346,3 +347,45 @@ describe('iterator', () => {
     expect(a).not.toStrictEqual(b)
   })
 })
+
+describe('Temporal equality', () => {
+  describe.each([
+    ['Instant', ['2025-01-01T00:00:00.000Z', '2026-01-01T00:00:00.000Z']],
+    ['ZonedDateTime', ['2025-01-01T00:00:00+01:00[Europe/Amsterdam]', '2025-01-01T00:00:00+01:00[Europe/Paris]']],
+    ['PlainDateTime', ['2025-01-01T00:00:00.000', '2026-01-01T00:00:00.000']],
+    ['PlainDate', ['2025-01-01', '2026-01-01']],
+    ['PlainTime', ['15:00:00.000', '16:00:00.000']],
+    ['PlainYearMonth', ['2025-01', '2026-01']],
+    ['PlainMonthDay', ['01-01', '02-01']],
+  ] as const)('of $className', (className, [first, second]) => {
+    test('returns true when equal', () => {
+      const a = Temporal[className].from(first)
+      const b = Temporal[className].from(first)
+
+      expect(a).toStrictEqual(b)
+    })
+
+    test('returns false when not equal', () => {
+      const a = Temporal[className].from(first)
+      const b = Temporal[className].from(second)
+
+      expect(a).not.toStrictEqual(b)
+    })
+  })
+
+  describe('of Duration', () => {
+    test('returns true when .toString() is equal', () => {
+      const a = Temporal.Duration.from('P1M')
+      const b = Temporal.Duration.from('P1M')
+
+      expect(a).toStrictEqual(b)
+    })
+
+    test('returns true when .toString() is not equal', () => {
+      const a = Temporal.Duration.from('PT1M')
+      const b = Temporal.Duration.from('PT60S')
+
+      expect(a).not.toStrictEqual(b)
+    })
+  })
+})