diff --git a/apps/timo-web/app/[locale]/(main)/settings/_hooks/useSettingsProfile.ts b/apps/timo-web/app/[locale]/(main)/settings/_hooks/useSettingsProfile.ts
index db1e587a..c6239fe3 100644
--- a/apps/timo-web/app/[locale]/(main)/settings/_hooks/useSettingsProfile.ts
+++ b/apps/timo-web/app/[locale]/(main)/settings/_hooks/useSettingsProfile.ts
@@ -18,6 +18,7 @@ import {
 } from "@/api/generated/endpoints/user/user";
 import { UpdateLanguageRequestLanguage } from "@/api/generated/models";
 import { useSettingsLanguageParam } from "@/app/[locale]/(main)/settings/_hooks/useSettingsLanguageParam";
+import { useLogoutAction } from "@/app/[locale]/(main)/settings/_queries/use-logout";
 import { useMyProfile } from "@/queries/use-my-profile";
 
 const LANGUAGE_REQUEST_MAP: Record<
@@ -42,6 +43,7 @@ export const useSettingsProfile = () => {
   const tCommon = useTranslations("Common");
   const { language, locale, setLanguage, commitLanguage } =
     useSettingsLanguageParam();
+  const { mutate: logoutMutate, isPending: isLoggingOut } = useLogoutAction();
 
   const { data: profile } = useMyProfile();
   const [isCalendarConnected, setIsCalendarConnected] = useState(
@@ -101,10 +103,8 @@ export const useSettingsProfile = () => {
   };
 
   const handleLogout = () => {
-    // TODO: API - 로그아웃 처리 및 브라우저 저장 데이터 파기
-    console.log("로그아웃 API 호출");
-    // TODO: 로그인 페이지 라우트 추가 후 이동 연결 (뒤로가기로 재접근 차단 포함)
-    console.log("[Login] 페이지로 이동합니다.");
+    if (isLoggingOut) return;
+    logoutMutate();
   };
 
   const isLanguageDirty = language !== locale;
diff --git a/apps/timo-web/app/[locale]/(main)/settings/_queries/use-logout.ts b/apps/timo-web/app/[locale]/(main)/settings/_queries/use-logout.ts
new file mode 100644
index 00000000..a0bfac9a
--- /dev/null
+++ b/apps/timo-web/app/[locale]/(main)/settings/_queries/use-logout.ts
@@ -0,0 +1,17 @@
+"use client";
+
+import { useMutation } from "@tanstack/react-query";
+
+import { logout } from "@/api/generated/endpoints/auth/auth";
+import { useClearSession } from "@/hooks/useClearSession";
+
+export const useLogoutAction = () => {
+  const clearSession = useClearSession();
+
+  return useMutation({
+    mutationFn: () => logout(),
+    onSettled: () => {
+      clearSession();
+    },
+  });
+};
diff --git a/apps/timo-web/app/[locale]/(main)/settings/withdrawal/_containers/SettingsWithdrawalContainer.tsx b/apps/timo-web/app/[locale]/(main)/settings/withdrawal/_containers/SettingsWithdrawalContainer.tsx
index 6f449f87..7e21684a 100644
--- a/apps/timo-web/app/[locale]/(main)/settings/withdrawal/_containers/SettingsWithdrawalContainer.tsx
+++ b/apps/timo-web/app/[locale]/(main)/settings/withdrawal/_containers/SettingsWithdrawalContainer.tsx
@@ -1,13 +1,18 @@
 "use client";
 
 import { useTranslations } from "next-intl";
+import { useState } from "react";
 
 import type { SettingsWithdrawalLabels } from "@/app/[locale]/(main)/settings/withdrawal/_types/withdrawal-type";
 
 import { SettingsWithdrawalView } from "@/app/[locale]/(main)/settings/withdrawal/_components/SettingsWithdrawalView";
+import { useWithdrawAction } from "@/app/[locale]/(main)/settings/withdrawal/_queries/use-withdraw";
+import { AnimatedToast } from "@/components/toast/AnimatedToast";
 
 export const SettingsWithdrawalContainer = () => {
   const t = useTranslations("Settings.withdrawal");
+  const { mutate: withdrawMutate, isPending } = useWithdrawAction();
+  const [isErrorToastOpen, setIsErrorToastOpen] = useState(false);
 
   const labels: SettingsWithdrawalLabels = {
     title: t("title"),
@@ -23,13 +28,26 @@ export const SettingsWithdrawalContainer = () => {
   };
 
   const handleWithdraw = () => {
+    if (isPending) return;
     // TODO: 실제 확인 모달로 교체
     const confirmed = window.confirm(t("confirmMessage"));
     if (!confirmed) return;
 
-    // TODO: API - 회원 탈퇴 및 데이터 영구 삭제
-    console.log("회원 탈퇴 API를 호출합니다.");
+    withdrawMutate(undefined, {
+      onError: () => {
+        setIsErrorToastOpen(true);
+      },
+    });
   };
 
-  return <SettingsWithdrawalView labels={labels} onWithdraw={handleWithdraw} />;
+  return (
+    <>
+      <SettingsWithdrawalView labels={labels} onWithdraw={handleWithdraw} />
+      <AnimatedToast
+        isOpen={isErrorToastOpen}
+        onClose={() => setIsErrorToastOpen(false)}
+        message={t("withdrawError")}
+      />
+    </>
+  );
 };
diff --git a/apps/timo-web/app/[locale]/(main)/settings/withdrawal/_queries/use-withdraw.ts b/apps/timo-web/app/[locale]/(main)/settings/withdrawal/_queries/use-withdraw.ts
new file mode 100644
index 00000000..0e1025e7
--- /dev/null
+++ b/apps/timo-web/app/[locale]/(main)/settings/withdrawal/_queries/use-withdraw.ts
@@ -0,0 +1,17 @@
+"use client";
+
+import { useMutation } from "@tanstack/react-query";
+
+import { withdraw } from "@/api/generated/endpoints/auth/auth";
+import { useClearSession } from "@/hooks/useClearSession";
+
+export const useWithdrawAction = () => {
+  const clearSession = useClearSession();
+
+  return useMutation({
+    mutationFn: () => withdraw(),
+    onSuccess: () => {
+      clearSession();
+    },
+  });
+};
diff --git a/apps/timo-web/hooks/useClearSession.ts b/apps/timo-web/hooks/useClearSession.ts
new file mode 100644
index 00000000..911d8f93
--- /dev/null
+++ b/apps/timo-web/hooks/useClearSession.ts
@@ -0,0 +1,19 @@
+"use client";
+
+import { useQueryClient } from "@tanstack/react-query";
+
+import { ROUTES } from "@/constants/routes";
+import { useRouter } from "@/i18n/navigation";
+import { useAuthStore } from "@/stores/auth/useAuthStore";
+
+export const useClearSession = () => {
+  const router = useRouter();
+  const queryClient = useQueryClient();
+  const clearAccessToken = useAuthStore((state) => state.clearAccessToken);
+
+  return () => {
+    clearAccessToken();
+    queryClient.clear();
+    router.replace(ROUTES.LOGIN);
+  };
+};
diff --git a/apps/timo-web/messages/en.json b/apps/timo-web/messages/en.json
index bcbbbdf6..ae342cf0 100644
--- a/apps/timo-web/messages/en.json
+++ b/apps/timo-web/messages/en.json
@@ -92,7 +92,8 @@
       "warningCalendar": "The linked calendar connection will be disconnected.",
       "warningIrreversible": "Deleted accounts cannot be recovered.",
       "withdraw": "Withdraw",
-      "confirmMessage": "Are you sure you want to withdraw? All your data will be deleted and cannot be undone."
+      "confirmMessage": "Are you sure you want to withdraw? All your data will be deleted and cannot be undone.",
+      "withdrawError": "An error occurred during withdrawal. Please try again later."
     }
   },
   "Statistics": {
diff --git a/apps/timo-web/messages/ko.json b/apps/timo-web/messages/ko.json
index 2f30bd57..8b999477 100644
--- a/apps/timo-web/messages/ko.json
+++ b/apps/timo-web/messages/ko.json
@@ -92,7 +92,8 @@
       "warningCalendar": "연동된 캘린더 연결이 해제됩니다.",
       "warningIrreversible": "삭제된 계정은 복구할 수 없습니다.",
       "withdraw": "탈퇴하기",
-      "confirmMessage": "정말 탈퇴하시겠어요? 탈퇴 후에는 모든 데이터가 삭제되며 되돌릴 수 없어요."
+      "confirmMessage": "정말 탈퇴하시겠어요? 탈퇴 후에는 모든 데이터가 삭제되며 되돌릴 수 없어요.",
+      "withdrawError": "탈퇴 처리 중 오류가 발생했습니다. 잠시 후 다시 시도해 주세요."
     }
   },
   "Statistics": {