diff --git a/superset-frontend/src/constants.ts b/superset-frontend/src/constants.ts
index 271e6890d47c..80dc7d04c8a0 100644
--- a/superset-frontend/src/constants.ts
+++ b/superset-frontend/src/constants.ts
@@ -154,6 +154,7 @@ export const DEFAULT_COMMON_BOOTSTRAP_DATA: CommonBootstrapData = {
   },
   extra_categorical_color_schemes: [],
   extra_sequential_color_schemes: [],
+  extra_theme_tokens: [],
   theme: {
     default: {},
     dark: {},
diff --git a/superset-frontend/src/theme/utils/antdTokenNames.test.ts b/superset-frontend/src/theme/utils/antdTokenNames.test.ts
index cb56d7606ead..de95b6dca608 100644
--- a/superset-frontend/src/theme/utils/antdTokenNames.test.ts
+++ b/superset-frontend/src/theme/utils/antdTokenNames.test.ts
@@ -22,6 +22,15 @@ import {
   getAllValidTokenNames,
 } from './antdTokenNames';
 
+// Simulate a deployment that registered a custom token via EXTRA_THEME_TOKENS
+// (shipped in the common bootstrap payload).
+jest.mock('src/utils/getBootstrapData', () => ({
+  __esModule: true,
+  default: () => ({
+    common: { extra_theme_tokens: ['customDeploymentToken'] },
+  }),
+}));
+
 test('isValidTokenName recognizes standard Ant Design tokens', () => {
   expect(isValidTokenName('colorPrimary')).toBe(true);
   expect(isValidTokenName('fontSize')).toBe(true);
@@ -141,6 +150,20 @@ test('dashboard tile tokens are recognized as valid Superset custom tokens', ()
   });
 });
 
+test('isValidTokenName recognizes deployment-registered EXTRA_THEME_TOKENS', () => {
+  expect(isValidTokenName('customDeploymentToken')).toBe(true);
+});
+
+test('isSupersetCustomToken treats EXTRA_THEME_TOKENS as custom, not Ant Design', () => {
+  expect(isSupersetCustomToken('customDeploymentToken')).toBe(true);
+});
+
+test('getAllValidTokenNames lists EXTRA_THEME_TOKENS under supersetTokens', () => {
+  const result = getAllValidTokenNames();
+  expect(result.supersetTokens).toContain('customDeploymentToken');
+  expect(result.antdTokens).not.toContain('customDeploymentToken');
+});
+
 test('label variant tokens are recognized as valid Superset custom tokens', () => {
   const labelTokens = [
     // Published/Draft
diff --git a/superset-frontend/src/theme/utils/antdTokenNames.ts b/superset-frontend/src/theme/utils/antdTokenNames.ts
index 4ca6f54fcf34..a25c6f7c1249 100644
--- a/superset-frontend/src/theme/utils/antdTokenNames.ts
+++ b/superset-frontend/src/theme/utils/antdTokenNames.ts
@@ -17,6 +17,25 @@
  * under the License.
  */
 import { theme } from 'antd';
+import getBootstrapData from 'src/utils/getBootstrapData';
+
+/**
+ * Custom token names registered by the deployment via the EXTRA_THEME_TOKENS
+ * config (shipped in the common bootstrap payload). Lets deployments and plugins
+ * validate their own theme tokens without forking this list.
+ *
+ * Snapshotted once so the cached valid-token set (isValidTokenName) and the live
+ * reads (isSupersetCustomToken, getAllValidTokenNames) all derive from the same
+ * list, rather than depending on getBootstrapData's memoization to stay in sync.
+ */
+let extraThemeTokensCache: readonly string[] | undefined;
+function getExtraThemeTokens(): readonly string[] {
+  if (extraThemeTokensCache === undefined) {
+    extraThemeTokensCache =
+      getBootstrapData()?.common?.extra_theme_tokens ?? [];
+  }
+  return extraThemeTokensCache;
+}
 
 /**
  * Superset-specific custom tokens that extend Ant Design's token system.
@@ -125,10 +144,11 @@ function getValidTokenNames(): Set<string> {
     const antdTokens = theme.getDesignToken();
     const antdTokenNames = Object.keys(antdTokens);
 
-    // Combine with Superset custom tokens
+    // Combine with Superset custom tokens + deployment-registered extras
     validTokenNamesCache = new Set([
       ...antdTokenNames,
       ...SUPERSET_CUSTOM_TOKENS,
+      ...getExtraThemeTokens(),
     ]);
   }
   return validTokenNamesCache;
@@ -149,7 +169,10 @@ export function isValidTokenName(tokenName: string): boolean {
  * @returns true if it's a Superset-specific token
  */
 export function isSupersetCustomToken(tokenName: string): boolean {
-  return SUPERSET_CUSTOM_TOKENS.has(tokenName);
+  return (
+    SUPERSET_CUSTOM_TOKENS.has(tokenName) ||
+    getExtraThemeTokens().includes(tokenName)
+  );
 }
 
 /**
@@ -165,7 +188,9 @@ export function getAllValidTokenNames(): {
   const antdTokens = Array.from(allTokens).filter(
     t => !isSupersetCustomToken(t),
   );
-  const supersetTokens: string[] = Array.from(SUPERSET_CUSTOM_TOKENS);
+  const supersetTokens: string[] = Array.from(
+    new Set([...SUPERSET_CUSTOM_TOKENS, ...getExtraThemeTokens()]),
+  );
 
   return {
     antdTokens,
diff --git a/superset-frontend/src/types/bootstrapTypes.ts b/superset-frontend/src/types/bootstrapTypes.ts
index a8d195e43d91..9a10e88d684b 100644
--- a/superset-frontend/src/types/bootstrapTypes.ts
+++ b/superset-frontend/src/types/bootstrapTypes.ts
@@ -168,6 +168,7 @@ export interface CommonBootstrapData {
   language_pack: LanguagePack;
   extra_categorical_color_schemes: ColorSchemeConfig[];
   extra_sequential_color_schemes: SequentialSchemeConfig[];
+  extra_theme_tokens: string[];
   theme: BootstrapThemeDataConfig;
   menu_data: MenuData;
   d3_format: Partial<FormatLocaleDefinition>;
diff --git a/superset/config.py b/superset/config.py
index 25dac7d6689f..68c81a2392bf 100644
--- a/superset/config.py
+++ b/superset/config.py
@@ -1063,6 +1063,12 @@ class D3TimeFormat(TypedDict, total=False):
 # This is merely a default
 EXTRA_CATEGORICAL_COLOR_SCHEMES: list[dict[str, Any]] = []
 
+# EXTRA_THEME_TOKENS lets a deployment register additional custom theme token
+# names so they validate cleanly in the theme editor instead of being flagged as
+# unknown Ant Design tokens. Deployments and plugins that consume their own
+# tokens via useTheme add them here. This is merely a default.
+EXTRA_THEME_TOKENS: list[str] = []
+
 # -----------------------------------------------------------------------------
 # Theme System Configuration
 # -----------------------------------------------------------------------------
diff --git a/superset/views/base.py b/superset/views/base.py
index a72b9679c872..e4a3d15dfe5e 100644
--- a/superset/views/base.py
+++ b/superset/views/base.py
@@ -636,6 +636,7 @@ def cached_common_bootstrap_data(  # pylint: disable=unused-argument
         "extra_categorical_color_schemes": app.config[
             "EXTRA_CATEGORICAL_COLOR_SCHEMES"
         ],
+        "extra_theme_tokens": app.config["EXTRA_THEME_TOKENS"],
         "menu_data": menu_data(g.user),
         "pdf_compression_level": app.config["PDF_COMPRESSION_LEVEL"],
         "user_subject_id": _get_user_subject_id(user_id),