diff --git a/changelog/23964.txt b/changelog/23964.txt
new file mode 100644
index 0000000000..7dcdf884dc
--- /dev/null
+++ b/changelog/23964.txt
@@ -0,0 +1,3 @@
+```release-note:improvement
+ui: Update sidebar Secrets engine to title case.
+```
diff --git a/ui/app/components/sidebar/nav/cluster.hbs b/ui/app/components/sidebar/nav/cluster.hbs
index a350e6aa15..c16c557809 100644
--- a/ui/app/components/sidebar/nav/cluster.hbs
+++ b/ui/app/components/sidebar/nav/cluster.hbs
@@ -10,8 +10,8 @@
   <Nav.Link
     @route="vault.cluster.secrets"
     @current-when="vault.cluster.secrets vault.cluster.settings.mount-secret-backend vault.cluster.settings.configure-secret-backend"
-    @text="Secrets engines"
-    data-test-sidebar-nav-link="Secrets engines"
+    @text="Secrets Engines"
+    data-test-sidebar-nav-link="Secrets Engines"
   />
   {{#if (has-permission "access")}}
     <Nav.Link
diff --git a/ui/tests/acceptance/secrets/backend/database/secret-test.js b/ui/tests/acceptance/secrets/backend/database/secret-test.js
index eadd4f39de..2a42cfceb5 100644
--- a/ui/tests/acceptance/secrets/backend/database/secret-test.js
+++ b/ui/tests/acceptance/secrets/backend/database/secret-test.js
@@ -461,7 +461,7 @@ module('Acceptance | secrets/database/*', function (hooks) {
     await authPage.logout();
     // Check with restricted permissions
     await authPage.login(token);
-    await click('[data-test-sidebar-nav-link="Secrets engines"]');
+    await click('[data-test-sidebar-nav-link="Secrets Engines"]');
     assert.dom(`[data-test-secrets-backend-link="${backend}"]`).exists('Shows backend on secret list page');
     await navToConnection(backend, connection);
     assert.strictEqual(
diff --git a/ui/tests/acceptance/secrets/backend/kv/kv-v2-workflow-edge-cases-test.js b/ui/tests/acceptance/secrets/backend/kv/kv-v2-workflow-edge-cases-test.js
index 170a53a0e0..c92914102b 100644
--- a/ui/tests/acceptance/secrets/backend/kv/kv-v2-workflow-edge-cases-test.js
+++ b/ui/tests/acceptance/secrets/backend/kv/kv-v2-workflow-edge-cases-test.js
@@ -276,7 +276,7 @@ module('Acceptance | Enterprise | kv-v2 workflow | edge cases', function (hooks)
   setupApplicationTest(hooks);
 
   const navToEngine = async (backend) => {
-    await click('[data-test-sidebar-nav-link="Secrets engines"]');
+    await click('[data-test-sidebar-nav-link="Secrets Engines"]');
     return await click(PAGE.backends.link(backend));
   };
 
diff --git a/ui/tests/acceptance/sidebar-nav-test.js b/ui/tests/acceptance/sidebar-nav-test.js
index c264ef5682..d274c7a0e9 100644
--- a/ui/tests/acceptance/sidebar-nav-test.js
+++ b/ui/tests/acceptance/sidebar-nav-test.js
@@ -54,7 +54,7 @@ module('Acceptance | sidebar navigation', function (hooks) {
     const links = [
       { label: 'Raft Storage', route: '/vault/storage/raft' },
       { label: 'Seal Vault', route: '/vault/settings/seal' },
-      { label: 'Secrets engines', route: '/vault/secrets' },
+      { label: 'Secrets Engines', route: '/vault/secrets' },
       { label: 'Dashboard', route: '/vault/dashboard' },
     ];
 
diff --git a/ui/tests/integration/components/sidebar/nav/cluster-test.js b/ui/tests/integration/components/sidebar/nav/cluster-test.js
index 59f8a53706..ccb9be3bcb 100644
--- a/ui/tests/integration/components/sidebar/nav/cluster-test.js
+++ b/ui/tests/integration/components/sidebar/nav/cluster-test.js
@@ -48,7 +48,7 @@ module('Integration | Component | sidebar-nav-cluster', function (hooks) {
   test('it should render nav links', async function (assert) {
     const links = [
       'Dashboard',
-      'Secrets engines',
+      'Secrets Engines',
       'Access',
       'Policies',
       'Tools',
diff --git a/ui/tests/pages/settings/mount-secret-backend.js b/ui/tests/pages/settings/mount-secret-backend.js
index de011247e9..6a4e58661c 100644
--- a/ui/tests/pages/settings/mount-secret-backend.js
+++ b/ui/tests/pages/settings/mount-secret-backend.js
@@ -17,7 +17,7 @@ export default create({
   maxTTLUnit: fillable('[data-test-ttl-unit="Max Lease TTL"] [data-test-select="ttl-unit"]'),
   enableDefaultTtl: clickable('[data-test-toggle-input="Default Lease TTL"]'),
   enableEngine: clickable('[data-test-enable-engine]'),
-  secretList: clickable('[data-test-sidebar-nav-link="Secrets engines"]'),
+  secretList: clickable('[data-test-sidebar-nav-link="Secrets Engines"]'),
   defaultTTLVal: fillable('input[data-test-ttl-value="Default Lease TTL"]'),
   defaultTTLUnit: fillable('[data-test-ttl-unit="Default Lease TTL"] [data-test-select="ttl-unit"]'),
   enable: async function (type, path) {