diff --git a/app.config.js b/app.config.js
index 790ae490eb..ca1536ae02 100644
--- a/app.config.js
+++ b/app.config.js
@@ -81,6 +81,7 @@ module.exports = function (_config) {
             'an',
             'ast',
             'ca',
+            'cs',
             'cy',
             'da',
             'de',
diff --git a/lingui.config.ts b/lingui.config.ts
index 2d16659717..3a4d57a07c 100644
--- a/lingui.config.ts
+++ b/lingui.config.ts
@@ -7,6 +7,7 @@ export default defineConfig({
     'an',
     'ast',
     'ca',
+    'cs',
     'cy',
     'da',
     'de',
diff --git a/src/components/ageAssurance/const.ts b/src/components/ageAssurance/const.ts
index 35f96e8417..93ff0f4152 100644
--- a/src/components/ageAssurance/const.ts
+++ b/src/components/ageAssurance/const.ts
@@ -8,6 +8,7 @@ export const KWS_SUPPORTED_LANGS = [
   {value: 'en', label: 'English'},
   {value: 'ar', label: 'العربية'},
   {value: 'zh-Hans', label: '简体中文'},
+  {value: 'cs', label: 'Čeština'},
   {value: 'nl', label: 'Nederlands'},
   {value: 'tl', label: 'Filipino'},
   {value: 'fr', label: 'Français'},
diff --git a/src/locale/helpers.ts b/src/locale/helpers.ts
index 18b378c263..63b09b3141 100644
--- a/src/locale/helpers.ts
+++ b/src/locale/helpers.ts
@@ -169,6 +169,8 @@ export function sanitizeAppLanguageSetting(appLanguage: string): AppLanguage {
         return AppLanguage.ast
       case 'ca':
         return AppLanguage.ca
+      case 'cs':
+        return AppLanguage.cs
       case 'cy':
         return AppLanguage.cy
       case 'da':
diff --git a/src/locale/i18n.ts b/src/locale/i18n.ts
index 17445d99b2..42041ca9a4 100644
--- a/src/locale/i18n.ts
+++ b/src/locale/i18n.ts
@@ -17,6 +17,7 @@ import {AppLanguage} from '#/locale/languages'
 import {messages as messagesAn} from '#/locale/locales/an/messages'
 import {messages as messagesAst} from '#/locale/locales/ast/messages'
 import {messages as messagesCa} from '#/locale/locales/ca/messages'
+import {messages as messagesCs} from '#/locale/locales/cs/messages'
 import {messages as messagesCy} from '#/locale/locales/cy/messages'
 import {messages as messagesDa} from '#/locale/locales/da/messages'
 import {messages as messagesDe} from '#/locale/locales/de/messages'
@@ -92,6 +93,16 @@ export async function dynamicActivate(locale: AppLanguage) {
       ])
       return dateLocale
     }
+    case AppLanguage.cs: {
+      i18n.loadAndActivate({locale, messages: messagesCs})
+      const [dateLocale] = await Promise.all([
+        import('date-fns/locale/cs').then(m => m.cs),
+        import('@formatjs/intl-pluralrules/locale-data/cs.js'),
+        import('@formatjs/intl-numberformat/locale-data/cs.js'),
+        import('@formatjs/intl-displaynames/locale-data/cs.js'),
+      ])
+      return dateLocale
+    }
     case AppLanguage.cy: {
       i18n.loadAndActivate({locale, messages: messagesCy})
       const [dateLocale] = await Promise.all([
diff --git a/src/locale/i18n.web.ts b/src/locale/i18n.web.ts
index 4d36ccb28b..6d76f9f400 100644
--- a/src/locale/i18n.web.ts
+++ b/src/locale/i18n.web.ts
@@ -36,6 +36,13 @@ export async function dynamicActivate(locale: AppLanguage) {
       ])
       break
     }
+    case AppLanguage.cs: {
+      ;[messages, dateLocale] = await Promise.all([
+        import(`./locales/cs/messages`).then(m => m.messages),
+        import('date-fns/locale/cs').then(m => m.cs),
+      ])
+      break
+    }
     case AppLanguage.cy: {
       ;[messages, dateLocale] = await Promise.all([
         import(`./locales/cy/messages`).then(m => m.messages),
diff --git a/src/locale/languages.ts b/src/locale/languages.ts
index af7ae9e20b..bf6fd5f857 100644
--- a/src/locale/languages.ts
+++ b/src/locale/languages.ts
@@ -9,6 +9,7 @@ export enum AppLanguage {
   an = 'an',
   ast = 'ast',
   ca = 'ca',
+  cs = 'cs',
   cy = 'cy',
   da = 'da',
   de = 'de',
@@ -58,6 +59,7 @@ export const APP_LANGUAGES: AppLanguageConfig[] = [
   {code2: AppLanguage.an, name: 'aragonés – Aragonese'},
   {code2: AppLanguage.ast, name: 'asturianu – Asturian'},
   {code2: AppLanguage.ca, name: 'català – Catalan'},
+  {code2: AppLanguage.cs, name: 'čeština – Czech'},
   {code2: AppLanguage.cy, name: 'Cymraeg – Welsh'},
   {code2: AppLanguage.da, name: 'dansk – Danish'},
   {code2: AppLanguage.de, name: 'Deutsch – German'},