diff --git a/.changeset/afraid-papers-see.md b/.changeset/afraid-papers-see.md
new file mode 100644
index 00000000000..820ca7bcc17
--- /dev/null
+++ b/.changeset/afraid-papers-see.md
@@ -0,0 +1,7 @@
+---
+'@clerk/localizations': patch
+---
+
+Improve Korean (ko-KR) localization by translating missing strings
+
+- Translated undefined values to Korean
diff --git a/packages/localizations/src/ko-KR.ts b/packages/localizations/src/ko-KR.ts
index b53de7d00bc..f59a373f8cc 100644
--- a/packages/localizations/src/ko-KR.ts
+++ b/packages/localizations/src/ko-KR.ts
@@ -26,15 +26,15 @@ export const koKR: LocalizationResource = {
     createdAndExpirationStatus__never: undefined,
     detailsTitle__emptyRow: undefined,
     formButtonPrimary__add: undefined,
-    formFieldCaption__expiration__expiresOn: undefined,
+    formFieldCaption__expiration__expiresOn: '{{ date }}에 만료',
     formFieldCaption__expiration__never: undefined,
-    formFieldOption__expiration__180d: undefined,
-    formFieldOption__expiration__1d: undefined,
-    formFieldOption__expiration__1y: undefined,
-    formFieldOption__expiration__30d: undefined,
-    formFieldOption__expiration__60d: undefined,
-    formFieldOption__expiration__7d: undefined,
-    formFieldOption__expiration__90d: undefined,
+    formFieldOption__expiration__180d: '180일',
+    formFieldOption__expiration__1d: '1일',
+    formFieldOption__expiration__1y: '1년',
+    formFieldOption__expiration__30d: '30일',
+    formFieldOption__expiration__60d: '60일',
+    formFieldOption__expiration__7d: '7일',
+    formFieldOption__expiration__90d: '90일',
     formFieldOption__expiration__never: undefined,
     formHint: undefined,
     formTitle: undefined,
@@ -212,12 +212,12 @@ export const koKR: LocalizationResource = {
   formFieldInputPlaceholder__apiKeyName: undefined,
   formFieldInputPlaceholder__backupCode: undefined,
   formFieldInputPlaceholder__confirmDeletionUserAccount: '계정 삭제',
-  formFieldInputPlaceholder__emailAddress: undefined,
-  formFieldInputPlaceholder__emailAddress_username: undefined,
+  formFieldInputPlaceholder__emailAddress: '이메일 주소를 입력하세요',
+  formFieldInputPlaceholder__emailAddress_username: '이메일 주소 또는 사용자명을 입력하세요',
   formFieldInputPlaceholder__emailAddresses:
     '하나 이상의 이메일 주소를 공백 또는 쉼표로 구분하여 입력하거나 붙여넣습니다',
-  formFieldInputPlaceholder__firstName: undefined,
-  formFieldInputPlaceholder__lastName: undefined,
+  formFieldInputPlaceholder__firstName: '이름',
+  formFieldInputPlaceholder__lastName: '성',
   formFieldInputPlaceholder__organizationDomain: undefined,
   formFieldInputPlaceholder__organizationDomainEmailAddress: undefined,
   formFieldInputPlaceholder__organizationName: undefined,
@@ -717,7 +717,7 @@ export const koKR: LocalizationResource = {
       subtitle: '환영합니다! 계속하려면 로그인해 주세요',
       subtitleCombined: undefined,
       title: '{{applicationName}}에 로그인',
-      titleCombined: undefined,
+      titleCombined: '{{applicationName}}로 계속',
     },
     totpMfa: {
       formTitle: '인증 코드',