diff --git a/packages/catalog-search/src/config/index.js b/packages/catalog-search/src/config/index.js
index 9b7b3148..59c18ce1 100644
--- a/packages/catalog-search/src/config/index.js
+++ b/packages/catalog-search/src/config/index.js
@@ -5,6 +5,7 @@ export const FEATURE_LANGUAGE_FACET = 'LANGUAGE_FACET';
 export const FEATURE_PROGRAM_TITLES_FACET = 'PROGRAM_TITLES_FACET';
 export const LEARNING_TYPE_FACET = 'LEARNING_TYPE_FACET';
 export const FEATURE_ENABLE_PATHWAYS = 'ENABLE_PATHWAYS';
+export const FEATURE_SUBTITLE_FACET = 'SUBTITLE_FACET';
 
 // eslint-disable-next-line import/prefer-default-export
 export const features = {
@@ -19,4 +20,7 @@ export const features = {
   ENABlE_PATHWAYS: (
     process.env.FEATURE_ENABLE_PATHWAYS || hasFeatureFlagEnabled(FEATURE_ENABLE_PATHWAYS)
   ),
+  SUBTITLE_FACET: (
+    process.env.FEATURE_SUBTITLE_FACET || hasFeatureFlagEnabled(FEATURE_SUBTITLE_FACET)
+  ),
 };
diff --git a/packages/catalog-search/src/data/constants.js b/packages/catalog-search/src/data/constants.js
index bf11b32b..22917b84 100644
--- a/packages/catalog-search/src/data/constants.js
+++ b/packages/catalog-search/src/data/constants.js
@@ -73,6 +73,14 @@ if (features.LEARNING_TYPE_FACET) {
   });
 }
 
+if (features.SUBTITLE_FACET) {
+  SEARCH_FACET_FILTERS.push({
+    attribute: 'transcript_languages',
+    title: 'Subtitle',
+    isSortedAlphabetical: true,
+  });
+}
+
 export const BOOLEAN_FILTERS = [SHOW_ALL_NAME];
 export const QUERY_PARAM_FOR_SEARCH_QUERY = 'q';
 export const QUERY_PARAM_FOR_PAGE = 'page';
diff --git a/packages/catalog-search/src/data/tests/constants.test.js b/packages/catalog-search/src/data/tests/constants.test.js
new file mode 100644
index 00000000..0cdffe58
--- /dev/null
+++ b/packages/catalog-search/src/data/tests/constants.test.js
@@ -0,0 +1,53 @@
+import {
+  SEARCH_FACET_FILTERS,
+  ADDITIONAL_FACET_FILTERS,
+} from '../constants';
+
+jest.mock('../../config', () => ({
+  __esModule: true,
+  features: {
+    ENROLL_WITH_CODES: true,
+    LANGUAGE_FACET: true,
+    PROGRAM_TITLES_FACET: true,
+    LEARNING_TYPE_FACET: true,
+    ENABLE_PATHWAYS: true,
+    SUBTITLE_FACET: true,
+  },
+}));
+
+describe('Constants', () => {
+  test('Search facet filters are defined correctly', () => {
+    expect(SEARCH_FACET_FILTERS).toHaveLength(9);
+  });
+
+  test('Additional facet filters are defined correctly', () => {
+    expect(Array.isArray(ADDITIONAL_FACET_FILTERS)).toBe(true);
+  });
+
+  test('Language facet filter is added when feature is enabled', () => {
+    const languageFacet = SEARCH_FACET_FILTERS.find(
+      (facet) => facet.attribute === 'language',
+    );
+    expect(languageFacet).toBeDefined();
+    expect(languageFacet.title).toBe('Language');
+    expect(languageFacet.isSortedAlphabetical).toBe(true);
+  });
+
+  test('Learning type facet filter is added when feature is enabled', () => {
+    const learningTypeFacet = SEARCH_FACET_FILTERS.find(
+      (facet) => facet.attribute === 'content_type',
+    );
+    expect(learningTypeFacet).toBeDefined();
+    expect(learningTypeFacet.title).toBe('Learning type');
+    expect(learningTypeFacet.noDisplay).toBe(true);
+  });
+
+  test('Subtitle facet filter is added when feature is enabled', () => {
+    const subtitleFacet = SEARCH_FACET_FILTERS.find(
+      (facet) => facet.attribute === 'transcript_languages',
+    );
+    expect(subtitleFacet).toBeDefined();
+    expect(subtitleFacet.title).toBe('Subtitle');
+    expect(subtitleFacet.isSortedAlphabetical).toBe(true);
+  });
+});