diff --git a/packages/keyring-controller/CHANGELOG.md b/packages/keyring-controller/CHANGELOG.md
index 2c94b6cbea2..84e4b860693 100644
--- a/packages/keyring-controller/CHANGELOG.md
+++ b/packages/keyring-controller/CHANGELOG.md
@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Expose `KeyringController:isUnlocked` method through `KeyringController` messenger ([#8573](https://github.com/MetaMask/core/pull/8573))
+  - Returns `true` when the vault is unlocked, `false` otherwise. Mirrors `state.isUnlocked` and the `isUnlocked()` instance method, allowing consumers to check lock status via the messenger without holding a controller reference.
 - Add `withController` action to run atomic operations on multiple keyrings (within a single transaction) ([#8416](https://github.com/MetaMask/core/pull/8416))
   - This action uses a `RestrictedController` object that exposes `addNewKeyring` and `removeKeyring` methods to add and remove keyring during the transaction (atomic) call.
 - Expose `KeyringController:signTransaction` method through `KeyringController` messenger ([#8408](https://github.com/MetaMask/core/pull/8408))
diff --git a/packages/keyring-controller/src/KeyringController-method-action-types.ts b/packages/keyring-controller/src/KeyringController-method-action-types.ts
index 3f1bd62fee4..e5799d22cb0 100644
--- a/packages/keyring-controller/src/KeyringController-method-action-types.ts
+++ b/packages/keyring-controller/src/KeyringController-method-action-types.ts
@@ -58,6 +58,16 @@ export type KeyringControllerAddNewKeyringAction = {
   handler: KeyringController['addNewKeyring'];
 };
 
+/**
+ * Returns the status of the vault.
+ *
+ * @returns Boolean returning true if the vault is unlocked.
+ */
+export type KeyringControllerIsUnlockedAction = {
+  type: `KeyringController:isUnlocked`;
+  handler: KeyringController['isUnlocked'];
+};
+
 /**
  * Returns the public addresses of all accounts from every keyring.
  *
@@ -401,6 +411,7 @@ export type KeyringControllerMethodActions =
   | KeyringControllerCreateNewVaultAndRestoreAction
   | KeyringControllerCreateNewVaultAndKeychainAction
   | KeyringControllerAddNewKeyringAction
+  | KeyringControllerIsUnlockedAction
   | KeyringControllerGetAccountsAction
   | KeyringControllerGetEncryptionPublicKeyAction
   | KeyringControllerDecryptMessageAction
diff --git a/packages/keyring-controller/src/KeyringController.ts b/packages/keyring-controller/src/KeyringController.ts
index 3b8ef6aa691..f989e277586 100644
--- a/packages/keyring-controller/src/KeyringController.ts
+++ b/packages/keyring-controller/src/KeyringController.ts
@@ -76,6 +76,7 @@ const MESSENGER_EXPOSED_METHODS = [
   'createNewVaultAndKeychain',
   'createNewVaultAndRestore',
   'removeAccount',
+  'isUnlocked',
 ] as const;
 
 /**
diff --git a/packages/keyring-controller/src/index.ts b/packages/keyring-controller/src/index.ts
index 4d570f0c98e..7da62e7fbdd 100644
--- a/packages/keyring-controller/src/index.ts
+++ b/packages/keyring-controller/src/index.ts
@@ -4,6 +4,7 @@ export type {
   KeyringControllerCreateNewVaultAndRestoreAction,
   KeyringControllerCreateNewVaultAndKeychainAction,
   KeyringControllerAddNewKeyringAction,
+  KeyringControllerIsUnlockedAction,
   KeyringControllerGetAccountsAction,
   KeyringControllerGetEncryptionPublicKeyAction,
   KeyringControllerDecryptMessageAction,