diff --git a/docs/src/api/class-locator.md b/docs/src/api/class-locator.md
index 26b4b475d2..2941362a71 100644
--- a/docs/src/api/class-locator.md
+++ b/docs/src/api/class-locator.md
@@ -1431,6 +1431,16 @@ checked = page.get_by_role("checkbox").is_checked()
 var isChecked = await page.GetByRole(AriaRole.Checkbox).IsCheckedAsync();
 ```
 
+### option: Locator.isChecked.checked
+* since: v1.50
+* langs: js, python
+- `checked` <[boolean]|"mixed">
+
+### option: Locator.isChecked.checked
+* since: v1.50
+* langs: java, csharp
+- `checked` <[boolean]>
+
 ### option: Locator.isChecked.timeout = %%-input-timeout-%%
 * since: v1.14
 
diff --git a/docs/src/api/class-locatorassertions.md b/docs/src/api/class-locatorassertions.md
index c2adf3afc5..f1b92915ad 100644
--- a/docs/src/api/class-locatorassertions.md
+++ b/docs/src/api/class-locatorassertions.md
@@ -539,6 +539,12 @@ await Expect(locator).ToBeCheckedAsync();
 
 ### option: LocatorAssertions.toBeChecked.checked
 * since: v1.18
+* langs: js, python
+- `checked` <[boolean]|"mixed">
+
+### option: LocatorAssertions.toBeChecked.checked
+* since: v1.18
+* langs: java, csharp
 - `checked` <[boolean]>
 
 ### option: LocatorAssertions.toBeChecked.timeout = %%-js-assertions-timeout-%%
diff --git a/packages/playwright-core/src/client/locator.ts b/packages/playwright-core/src/client/locator.ts
index 84e68e1b20..7a8ce15604 100644
--- a/packages/playwright-core/src/client/locator.ts
+++ b/packages/playwright-core/src/client/locator.ts
@@ -256,8 +256,9 @@ export class Locator implements api.Locator {
     return await this._frame.inputValue(this._selector, { strict: true, ...options });
   }
 
-  async isChecked(options?: TimeoutOptions): Promise<boolean> {
-    return await this._frame.isChecked(this._selector, { strict: true, ...options });
+  async isChecked(options?: { checked?: boolean | 'mixed' } & TimeoutOptions): Promise<boolean> {
+    const checked = options?.checked === true ? 'checked' : options?.checked === false ? 'unchecked' : options?.checked === 'mixed' ? 'mixed' : undefined;
+    return await this._frame.isChecked(this._selector, { strict: true, ...options, checked });
   }
 
   async isDisabled(options?: TimeoutOptions): Promise<boolean> {
diff --git a/packages/playwright-core/src/protocol/validator.ts b/packages/playwright-core/src/protocol/validator.ts
index 9b14551fb8..868e39d08b 100644
--- a/packages/playwright-core/src/protocol/validator.ts
+++ b/packages/playwright-core/src/protocol/validator.ts
@@ -1591,6 +1591,7 @@ scheme.FrameInputValueResult = tObject({
 });
 scheme.FrameIsCheckedParams = tObject({
   selector: tString,
+  checked: tOptional(tEnum(['checked', 'unchecked', 'mixed'])),
   strict: tOptional(tBoolean),
   timeout: tOptional(tNumber),
 });
diff --git a/packages/playwright-core/src/server/dom.ts b/packages/playwright-core/src/server/dom.ts
index 962f385c90..8fc4a4847f 100644
--- a/packages/playwright-core/src/server/dom.ts
+++ b/packages/playwright-core/src/server/dom.ts
@@ -777,7 +777,7 @@ export class ElementHandle<T extends Node = Node> extends js.JSHandle<T> {
 
   async _setChecked(progress: Progress, state: boolean, options: { position?: types.Point } & types.PointerActionWaitOptions): Promise<'error:notconnected' | 'done'> {
     const isChecked = async () => {
-      const result = await this.evaluateInUtility(([injected, node]) => injected.elementState(node, 'checked'), {});
+      const result = await this.evaluateInUtility(([injected, node]) => injected.elementState(node, 'lax-checked'), {});
       if (result === 'error:notconnected' || result.received === 'error:notconnected')
         throwElementIsNotAttached();
       return result.matches;
diff --git a/packages/playwright-core/src/server/frames.ts b/packages/playwright-core/src/server/frames.ts
index 1d2098b92c..0ceb9db60e 100644
--- a/packages/playwright-core/src/server/frames.ts
+++ b/packages/playwright-core/src/server/frames.ts
@@ -1336,19 +1336,19 @@ export class Frame extends SdkObject {
   }
 
   async isDisabled(metadata: CallMetadata, selector: string, options: types.QueryOnSelectorOptions = {}, scope?: dom.ElementHandle): Promise<boolean> {
-    return this._elementState(metadata, selector, 'disabled', options, scope);
+    return await this._elementState(metadata, selector, 'disabled', options, scope);
   }
 
   async isEnabled(metadata: CallMetadata, selector: string, options: types.QueryOnSelectorOptions = {}, scope?: dom.ElementHandle): Promise<boolean> {
-    return this._elementState(metadata, selector, 'enabled', options, scope);
+    return await this._elementState(metadata, selector, 'enabled', options, scope);
   }
 
   async isEditable(metadata: CallMetadata, selector: string, options: types.QueryOnSelectorOptions = {}, scope?: dom.ElementHandle): Promise<boolean> {
-    return this._elementState(metadata, selector, 'editable', options, scope);
+    return await this._elementState(metadata, selector, 'editable', options, scope);
   }
 
-  async isChecked(metadata: CallMetadata, selector: string, options: types.QueryOnSelectorOptions = {}, scope?: dom.ElementHandle): Promise<boolean> {
-    return this._elementState(metadata, selector, 'checked', options, scope);
+  async isChecked(metadata: CallMetadata, selector: string, options: { checked?: 'checked' | 'unchecked' | 'mixed' } & types.QueryOnSelectorOptions = {}, scope?: dom.ElementHandle): Promise<boolean> {
+    return await this._elementState(metadata, selector, options?.checked || 'lax-checked', options, scope);
   }
 
   async hover(metadata: CallMetadata, selector: string, options: types.PointerActionOptions & types.PointerActionWaitOptions = {}) {
diff --git a/packages/playwright-core/src/server/injected/injectedScript.ts b/packages/playwright-core/src/server/injected/injectedScript.ts
index 0acc9bc76c..489dda6e5e 100644
--- a/packages/playwright-core/src/server/injected/injectedScript.ts
+++ b/packages/playwright-core/src/server/injected/injectedScript.ts
@@ -29,7 +29,7 @@ import type { CSSComplexSelectorList } from '../../utils/isomorphic/cssParser';
 import { generateSelector, type GenerateSelectorOptions } from './selectorGenerator';
 import type * as channels from '@protocol/channels';
 import { Highlight } from './highlight';
-import { getChecked, getAriaDisabled, getAriaRole, getElementAccessibleName, getElementAccessibleDescription, getReadonly, getElementAccessibleErrorMessage } from './roleUtils';
+import { getAriaDisabled, getAriaRole, getElementAccessibleName, getElementAccessibleDescription, getReadonly, getElementAccessibleErrorMessage, getCheckedAllowMixed, getCheckedWithoutMixed } from './roleUtils';
 import { kLayoutSelectorNames, type LayoutSelectorName, layoutSelectorScore } from './layoutSelectorUtils';
 import { asLocator } from '../../utils/isomorphic/locatorGenerators';
 import type { Language } from '../../utils/isomorphic/locatorGenerators';
@@ -41,7 +41,7 @@ import { parseYamlTemplate } from '@isomorphic/ariaSnapshot';
 
 export type FrameExpectParams = Omit<channels.FrameExpectParams, 'expectedValue'> & { expectedValue?: any };
 
-export type ElementState = 'visible' | 'hidden' | 'enabled' | 'disabled' | 'editable' | 'checked' | 'unchecked' | 'mixed' | 'stable';
+export type ElementState = 'visible' | 'hidden' | 'enabled' | 'disabled' | 'editable' | 'checked' | 'unchecked' | 'mixed' | 'lax-checked' | 'stable';
 export type ElementStateWithoutStable = Exclude<ElementState, 'stable'>;
 export type ElementStateQueryResult = { matches: boolean, received?: string | 'error:notconnected' };
 
@@ -646,7 +646,7 @@ export class InjectedScript {
 
     if (state === 'checked' || state === 'unchecked' || state === 'mixed') {
       const need = state === 'checked' ? true : state === 'unchecked' ? false : 'mixed';
-      const checked = getChecked(element, false);
+      const checked = getCheckedAllowMixed(element);
       if (checked === 'error')
         throw this.createStacklessError('Not a checkbox or radio button');
       return {
@@ -654,6 +654,17 @@ export class InjectedScript {
         received: checked === true ? 'checked' : checked === false ? 'unchecked' : 'mixed',
       };
     }
+
+    if (state === 'lax-checked') {
+      const checked = getCheckedWithoutMixed(element);
+      if (checked === 'error')
+        throw this.createStacklessError('Not a checkbox or radio button');
+      return {
+        matches: checked,
+        received: checked ? 'checked' : 'unchecked',
+      };
+    }
+
     throw this.createStacklessError(`Unexpected element state "${state}"`);
   }
 
@@ -1241,9 +1252,7 @@ export class InjectedScript {
           received: hasAttribute ? 'attribute present' : 'attribute not present',
         };
       } else if (expression === 'to.be.checked') {
-        result = this.elementState(element, 'checked');
-      } else if (expression === 'to.be.unchecked') {
-        result = this.elementState(element, 'unchecked');
+        result = this.elementState(element, options.expectedValue);
       } else if (expression === 'to.be.disabled') {
         result = this.elementState(element, 'disabled');
       } else if (expression === 'to.be.editable') {
diff --git a/packages/playwright-core/src/server/injected/roleUtils.ts b/packages/playwright-core/src/server/injected/roleUtils.ts
index f74c893c1b..5ed6fd7b85 100644
--- a/packages/playwright-core/src/server/injected/roleUtils.ts
+++ b/packages/playwright-core/src/server/injected/roleUtils.ts
@@ -894,7 +894,17 @@ export function getAriaChecked(element: Element): boolean | 'mixed' {
   const result = getChecked(element, true);
   return result === 'error' ? false : result;
 }
-export function getChecked(element: Element, allowMixed: boolean): boolean | 'mixed' | 'error' {
+
+export function getCheckedAllowMixed(element: Element): boolean | 'mixed' | 'error' {
+  return getChecked(element, true);
+}
+
+export function getCheckedWithoutMixed(element: Element): boolean | 'error' {
+  const result = getChecked(element, false);
+  return result as boolean | 'error';
+}
+
+function getChecked(element: Element, allowMixed: boolean): boolean | 'mixed' | 'error' {
   const tagName = elementSafeTagName(element);
   // https://www.w3.org/TR/wai-aria-1.2/#aria-checked
   // https://www.w3.org/TR/html-aam-1.0/#html-attribute-state-and-property-mappings
diff --git a/packages/playwright-core/src/server/recorder/recorderRunner.ts b/packages/playwright-core/src/server/recorder/recorderRunner.ts
index b0f476ffb1..ad4f11d7be 100644
--- a/packages/playwright-core/src/server/recorder/recorderRunner.ts
+++ b/packages/playwright-core/src/server/recorder/recorderRunner.ts
@@ -87,6 +87,7 @@ export async function performAction(callMetadata: CallMetadata, pageAliases: Map
     await mainFrame.expect(callMetadata, selector, {
       selector,
       expression: 'to.be.checked',
+      expectedValue: 'checked',
       isNot: !action.checked,
       timeout: kActionTimeout,
     });
diff --git a/packages/playwright-core/types/types.d.ts b/packages/playwright-core/types/types.d.ts
index 2605af04c4..bf182aa1ef 100644
--- a/packages/playwright-core/types/types.d.ts
+++ b/packages/playwright-core/types/types.d.ts
@@ -13643,6 +13643,8 @@ export interface Locator {
    * @param options
    */
   isChecked(options?: {
+    checked?: boolean|"mixed";
+
     /**
      * Maximum time in milliseconds. Defaults to `0` - no timeout. The default value can be changed via `actionTimeout`
      * option in the config, or by using the
diff --git a/packages/playwright/src/matchers/matchers.ts b/packages/playwright/src/matchers/matchers.ts
index 1e3aef132a..472193d00b 100644
--- a/packages/playwright/src/matchers/matchers.ts
+++ b/packages/playwright/src/matchers/matchers.ts
@@ -51,13 +51,13 @@ export function toBeAttached(
 export function toBeChecked(
   this: ExpectMatcherState,
   locator: LocatorEx,
-  options?: { checked?: boolean, timeout?: number },
+  options?: { checked?: boolean | 'mixed', timeout?: number },
 ) {
-  const checked = !options || options.checked === undefined || options.checked;
-  const expected = checked ? 'checked' : 'unchecked';
-  const arg = checked ? '' : '{ checked: false }';
+  const expected = options?.checked === true ? 'checked' : options?.checked === false ? 'unchecked' : options?.checked === 'mixed' ? 'mixed' : 'checked';
+  const expectedValue = options?.checked === true ? 'checked' : options?.checked === false ? 'unchecked' : options?.checked === 'mixed' ? 'mixed' : 'lax-checked';
+  const arg = options?.checked === undefined ? '' : `{ checked: ${JSON.stringify(options.checked)} }`;
   return toBeTruthy.call(this, 'toBeChecked', locator, 'Locator', expected, arg, async (isNot, timeout) => {
-    return await locator._expect(checked ? 'to.be.checked' : 'to.be.unchecked', { isNot, timeout });
+    return await locator._expect('to.be.checked', { isNot, timeout, expectedValue });
   }, options);
 }
 
diff --git a/packages/playwright/types/test.d.ts b/packages/playwright/types/test.d.ts
index cff8c8ca60..3ecc1de685 100644
--- a/packages/playwright/types/test.d.ts
+++ b/packages/playwright/types/test.d.ts
@@ -7813,7 +7813,7 @@ interface LocatorAssertions {
    * @param options
    */
   toBeChecked(options?: {
-    checked?: boolean;
+    checked?: boolean|"mixed";
 
     /**
      * Time to retry the assertion for in milliseconds. Defaults to `timeout` in `TestConfig.expect`.
diff --git a/packages/protocol/src/channels.d.ts b/packages/protocol/src/channels.d.ts
index 6f9e36f0c3..1b116a5d48 100644
--- a/packages/protocol/src/channels.d.ts
+++ b/packages/protocol/src/channels.d.ts
@@ -2879,10 +2879,12 @@ export type FrameInputValueResult = {
 };
 export type FrameIsCheckedParams = {
   selector: string,
+  checked?: 'checked' | 'unchecked' | 'mixed',
   strict?: boolean,
   timeout?: number,
 };
 export type FrameIsCheckedOptions = {
+  checked?: 'checked' | 'unchecked' | 'mixed',
   strict?: boolean,
   timeout?: number,
 };
diff --git a/packages/protocol/src/protocol.yml b/packages/protocol/src/protocol.yml
index 9997989f77..ac245839b9 100644
--- a/packages/protocol/src/protocol.yml
+++ b/packages/protocol/src/protocol.yml
@@ -2128,6 +2128,12 @@ Frame:
     isChecked:
       parameters:
         selector: string
+        checked:
+          type: enum?
+          literals:
+          - checked
+          - unchecked
+          - mixed
         strict: boolean?
         timeout: number?
       returns:
diff --git a/tests/page/expect-boolean.spec.ts b/tests/page/expect-boolean.spec.ts
index 1890c608b9..3e21a04936 100644
--- a/tests/page/expect-boolean.spec.ts
+++ b/tests/page/expect-boolean.spec.ts
@@ -35,6 +35,13 @@ test.describe('toBeChecked', () => {
     await expect(locator).not.toBeChecked({ checked: false });
   });
 
+  test('with checked:mixed', async ({ page }) => {
+    await page.setContent('<input type=checkbox aria-checked=mixed></input>');
+    await page.locator('input').evaluate((e: HTMLInputElement) => e.indeterminate = true);
+    const locator = page.locator('input');
+    await expect(locator).toBeChecked({ checked: 'mixed' });
+  });
+
   test('fail', async ({ page }) => {
     await page.setContent('<input type=checkbox></input>');
     const locator = page.locator('input');
@@ -69,6 +76,13 @@ test.describe('toBeChecked', () => {
     expect(error.message).toContain(`expect.toBeChecked with timeout 1000ms`);
   });
 
+  test('fail with checked:mixed', async ({ page }) => {
+    await page.setContent('<input type=checkbox></input>');
+    const locator = page.locator('input');
+    const error = await expect(locator).toBeChecked({ checked: 'mixed', timeout: 1000 }).catch(e => e);
+    expect(error.message).toContain(`expect.toBeChecked with timeout 1000ms`);
+  });
+
   test('fail missing', async ({ page }) => {
     await page.setContent('<div>no inputs here</div>');
     const locator2 = page.locator('input2');
diff --git a/tests/page/expect-matcher-result.spec.ts b/tests/page/expect-matcher-result.spec.ts
index 2059e8401b..00e737be29 100644
--- a/tests/page/expect-matcher-result.spec.ts
+++ b/tests/page/expect-matcher-result.spec.ts
@@ -161,7 +161,7 @@ Call log`);
   }
 });
 
-test('toBeChecked({ checked: false }) should have expected: false', async ({ page }) => {
+test('toBeChecked({ checked }) should have expected', async ({ page }) => {
   await page.setContent(`
     <input id=checked type=checkbox checked></input>
     <input id=unchecked type=checkbox></input>
@@ -251,6 +251,28 @@ Call log`);
 Locator: locator('#unchecked')
 Expected: not unchecked
 Received: unchecked
+Call log`);
+
+  }
+
+  {
+    const e = await expect(page.locator('#unchecked')).toBeChecked({ checked: 'mixed', timeout: 1 }).catch(e => e);
+    e.matcherResult.message = stripAnsi(e.matcherResult.message);
+    expect.soft(e.matcherResult).toEqual({
+      actual: 'unchecked',
+      expected: 'mixed',
+      message: expect.stringContaining(`Timed out 1ms waiting for expect(locator).toBeChecked({ checked: "mixed" })`),
+      name: 'toBeChecked',
+      pass: false,
+      log: expect.any(Array),
+      timeout: 1,
+    });
+
+    expect.soft(stripAnsi(e.toString())).toContain(`Error: Timed out 1ms waiting for expect(locator).toBeChecked({ checked: "mixed" })
+
+Locator: locator('#unchecked')
+Expected: mixed
+Received: unchecked
 Call log`);
 
   }
diff --git a/tests/page/locator-convenience.spec.ts b/tests/page/locator-convenience.spec.ts
index d63b890fd9..e711c0735e 100644
--- a/tests/page/locator-convenience.spec.ts
+++ b/tests/page/locator-convenience.spec.ts
@@ -172,6 +172,32 @@ it('isChecked should work for indeterminate input', async ({ page }) => {
   await expect(page.locator('input')).not.toBeChecked();
 });
 
+it('isChecked with explicit checked should work for indeterminate input', async ({ page }) => {
+  it.info().annotations.push({ type: 'issue', description: 'https://github.com/microsoft/playwright/issues/20190' });
+
+  await page.setContent(`<input type="checkbox" checked>`);
+  await page.locator('input').evaluate((e: HTMLInputElement) => e.indeterminate = true);
+
+  expect(await page.locator('input').isChecked({ checked: true })).toBe(false);
+  expect(await page.locator('input').isChecked({ checked: false })).toBe(false);
+  expect(await page.locator('input').isChecked({ checked: 'mixed' })).toBe(true);
+  await expect(page.locator('input')).toBeChecked({ checked: 'mixed' });
+
+  await page.locator('input').uncheck();
+
+  expect(await page.locator('input').isChecked({ checked: true })).toBe(false);
+  expect(await page.locator('input').isChecked({ checked: false })).toBe(true);
+  expect(await page.locator('input').isChecked({ checked: 'mixed' })).toBe(false);
+  await expect(page.locator('input')).toBeChecked({ checked: false });
+
+  await page.locator('input').check();
+
+  expect(await page.locator('input').isChecked({ checked: true })).toBe(true);
+  expect(await page.locator('input').isChecked({ checked: false })).toBe(false);
+  expect(await page.locator('input').isChecked({ checked: 'mixed' })).toBe(false);
+  await expect(page.locator('input')).toBeChecked({ checked: true });
+});
+
 it('allTextContents should work', async ({ page }) => {
   await page.setContent(`<div>A</div><div>B</div><div>C</div>`);
   expect(await page.locator('div').allTextContents()).toEqual(['A', 'B', 'C']);