diff --git a/web/public/locales/en/common.json b/web/public/locales/en/common.json
index 422e722ca..6f68a56af 100644
--- a/web/public/locales/en/common.json
+++ b/web/public/locales/en/common.json
@@ -162,6 +162,7 @@
       "da": "Dansk (Danish)",
       "sk": "Slovenčina (Slovak)",
       "yue": "粵語 (Cantonese)",
+      "th": "ไทย (Thai)",
       "withSystem": {
         "label": "Use the system settings for language"
       }
diff --git a/web/src/hooks/use-date-locale.ts b/web/src/hooks/use-date-locale.ts
index 4e51448fa..d36c1dda5 100644
--- a/web/src/hooks/use-date-locale.ts
+++ b/web/src/hooks/use-date-locale.ts
@@ -33,6 +33,7 @@ const localeMap: Record<string, () => Promise<Locale>> = {
   sk: () => import("date-fns/locale/sk").then((module) => module.sk),
   "yue-Hant": () =>
     import("date-fns/locale/zh-HK").then((module) => module.zhHK),
+  th: () => import("date-fns/locale/th").then((module) => module.th),
 };
 
 export function useDateLocale(): Locale {
diff --git a/web/src/lib/const.ts b/web/src/lib/const.ts
index 0afd0979d..e860b4ab4 100644
--- a/web/src/lib/const.ts
+++ b/web/src/lib/const.ts
@@ -8,6 +8,7 @@ export const supportedLanguageKeys = [
   "nb-NO",
   "zh-CN",
   "yue-Hant",
+  "th",
   "ru",
   "tr",
   "pl",