diff --git a/src/App.test.tsx b/src/App.test.tsx
index c10622f..7e5e4ca 100644
--- a/src/App.test.tsx
+++ b/src/App.test.tsx
@@ -2,7 +2,7 @@ import { HelmetProvider } from "react-helmet-async";
 
 import { MemoryRouter, type MemoryRouterProps } from "react-router-dom";
 
-import { render, screen } from "@testing-library/react";
+import { render, screen, waitFor } from "@testing-library/react";
 import { userEvent } from "@testing-library/user-event";
 
 import ThemeProvider from "@providers/ThemeProvider";
@@ -30,15 +30,21 @@ describe("상단 네비게이션", () => {
     const languageButton = await screen.findByTestId("language-button");
     expect(languageButton).toBeInTheDocument();
     await userEvent.click(languageButton);
-    expect(await screen.findByTestId(/language-option-korea/)).toBeInTheDocument();
+    expect(await screen.findByTestId(/language-option-korean/)).toBeInTheDocument();
     expect(await screen.findByTestId(/language-option-english/)).toBeInTheDocument();
 
     if (languageButton.getAttribute("aria-label") === "한국어") {
       await userEvent.click(screen.getByTestId("language-option-english"));
-      expect(languageButton.getAttribute("aria-label")).equal("english");
+      await waitFor(async () => {
+        const languageButton = await screen.findByTestId("language-button");
+        expect(languageButton.getAttribute("aria-label")).equal("English");
+      });
     } else {
-      await userEvent.click(screen.getByTestId("language-option-korea"));
-      expect(languageButton.getAttribute("aria-label")).equal("korea");
+      await userEvent.click(screen.getByTestId("language-option-korean"));
+      await waitFor(async () => {
+        const languageButton = await screen.findByTestId("language-button");
+        expect(languageButton.getAttribute("aria-label")).equal("한국어");
+      });
     }
   });
 
diff --git a/src/App.tsx b/src/App.tsx
index ea2db8f..b2ba992 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,6 +1,7 @@
 import { Route, Routes } from "react-router-dom";
 
 import ErrorBoundary from "@components/utils/ErrorBoundary";
+import LangLayout from "@components/utils/LangLayout";
 import Error404Page from "@pages/error/404/page";
 import Error500Page from "@pages/error/500/page";
 import HowToConnectPage from "@pages/faq/how-to-connect/page";
@@ -25,6 +26,13 @@ function App() {
         />
         <Route path="/terms" element={<TermsPage />} />
         <Route path="/privacy" element={<PrivacyPage />} />
+        <Route path="/:lang" element={<LangLayout />}>
+          <Route index element={<HomePage />} />
+          <Route path="faq" element={<FaqPage />} />
+          <Route path="guide" element={<GuidePage />} />
+          <Route path="terms" element={<TermsPage />} />
+          <Route path="privacy" element={<PrivacyPage />} />
+        </Route>
         <Route path="*" element={<Error404Page />} />
       </Routes>
     </ErrorBoundary>
diff --git a/src/components/molecules/Footer/Footer.tsx b/src/components/molecules/Footer/Footer.tsx
index 13e157e..b74ebb3 100644
--- a/src/components/molecules/Footer/Footer.tsx
+++ b/src/components/molecules/Footer/Footer.tsx
@@ -1,4 +1,4 @@
-import { Link } from "react-router-dom";
+import { Link, useParams } from "react-router-dom";
 
 import Button from "@components/atoms/Button";
 import Container from "@components/atoms/Container";
@@ -7,6 +7,10 @@ import { GoogleFirebase } from "@utils/google-firebase";
 import { Copyright, Divider, InfoBox, PolicyButtonGroup, StyledFooter } from "./Footer.styles";
 
 function Footer() {
+  const { lang } = useParams();
+
+  const prefixUrlLang = lang ? `/${lang}` : "";
+
   const handleLogEvent = (label: string) => {
     GoogleFirebase.logEvent("click_top_nav", {
       item_name: label
@@ -20,12 +24,12 @@ function Footer() {
         <InfoBox>
           <Copyright>Copyright © {new Date().getFullYear()} Plandy</Copyright>
           <PolicyButtonGroup>
-            <Link to="/terms" onClick={() => handleLogEvent("terms")}>
+            <Link to={`${prefixUrlLang}/terms`} onClick={() => handleLogEvent("terms")}>
               <Button variant="text" size="small">
                 Terms of service
               </Button>
             </Link>
-            <Link to="/privacy" onClick={() => handleLogEvent("privacy")}>
+            <Link to={`${prefixUrlLang}/privacy`} onClick={() => handleLogEvent("privacy")}>
               <Button variant="text" size="small">
                 Privacy policy
               </Button>
diff --git a/src/components/molecules/Header/Header.tsx b/src/components/molecules/Header/Header.tsx
index 96be095..f76e067 100644
--- a/src/components/molecules/Header/Header.tsx
+++ b/src/components/molecules/Header/Header.tsx
@@ -1,6 +1,5 @@
-import { useState } from "react";
-
-import { Link } from "react-router-dom";
+import { useTranslation } from "react-i18next";
+import { Link, useLocation, useNavigate, useParams } from "react-router-dom";
 
 import Button from "@components/atoms/Button";
 import Container from "@components/atoms/Container";
@@ -9,31 +8,21 @@ import Select, { Option } from "@components/atoms/Select";
 import useThemeStore from "@stores/theme";
 import { GoogleFirebase } from "@utils/google-firebase";
 
-import i18n from "@utils/i18n";
+import { matchSupportLanguage, SupportLanguage } from "@utils/i18n";
 
 import { Adornment, HeaderInner, Logo, StyledHeader } from "./Header.styles";
 
-const Language = {
-  en: {
-    name: "English",
-    value: "english"
-  },
-  ko: {
-    name: "한국어",
-    value: "korean"
-  },
-  ja: {
-    name: "日本語",
-    value: "japanese"
-  }
-};
-
 function Header() {
+  const { i18n } = useTranslation();
+  const navigate = useNavigate();
+  const { pathname } = useLocation();
+  const { lang } = useParams();
+
   const mode = useThemeStore((state) => state.mode);
   const updateTrigger = useThemeStore((state) => state.updateTrigger);
   const updateMode = useThemeStore((state) => state.updateMode);
 
-  const [language, setLanguage] = useState(i18n.language);
+  const prefixUrlLang = lang ? `/${lang}` : "";
 
   const handleClick = () => {
     updateTrigger("manual");
@@ -42,8 +31,7 @@ function Header() {
   };
 
   const handleChangeLang = (newLang?: string) => {
-    i18n.changeLanguage(newLang);
-    setLanguage(newLang || "en");
+    navigate(`/${newLang}${pathname.replace(prefixUrlLang, "")}`);
   };
 
   const handleLogEvent = (label: string) => {
@@ -56,7 +44,7 @@ function Header() {
     <StyledHeader id="header">
       <Container>
         <HeaderInner>
-          <Link to="/" onClick={() => handleLogEvent("logo")}>
+          <Link to={`${prefixUrlLang}/`} onClick={() => handleLogEvent("logo")}>
             <Button variant="text" size="small">
               <Logo>
                 <img width={30} height={30} src="/icons/apple-icon.png" alt="Plandy Logo" />
@@ -64,12 +52,12 @@ function Header() {
             </Button>
           </Link>
           <Adornment>
-            <Link to="/faq" onClick={() => handleLogEvent("faq")}>
+            <Link to={`${prefixUrlLang}/faq`} onClick={() => handleLogEvent("faq")}>
               <Button variant="text" size="small">
                 FAQ
               </Button>
             </Link>
-            <Link to="/guide" onClick={() => handleLogEvent("guide")}>
+            <Link to={`${prefixUrlLang}/guide`} onClick={() => handleLogEvent("guide")}>
               <Button variant="text" size="small">
                 Guide
               </Button>
@@ -77,18 +65,18 @@ function Header() {
             <Select
               id="language-button"
               data-testid="language-button"
-              aria-label={language}
+              aria-label={matchSupportLanguage(i18n.resolvedLanguage).name}
               size="small"
               onChange={handleChangeLang}
-              value={language}
+              value={i18n.resolvedLanguage}
               endIcon={<Icon name="ArrowDownBold" width={14} height={14} />}
               placeholder="Language"
             >
-              {Object.entries(Language).map(([key, { name, value }]) => (
+              {Object.values(SupportLanguage).map(({ name, value, langCode }) => (
                 <Option
                   key={`language-option-${value}`}
                   data-testid={`language-option-${value}`}
-                  value={key}
+                  value={langCode}
                 >
                   {name}
                 </Option>
diff --git a/src/components/utils/LangLayout.tsx b/src/components/utils/LangLayout.tsx
new file mode 100644
index 0000000..2ddc7f1
--- /dev/null
+++ b/src/components/utils/LangLayout.tsx
@@ -0,0 +1,24 @@
+import { useEffect } from "react";
+import { useTranslation } from "react-i18next";
+import { Outlet, useLocation, useNavigate, useParams } from "react-router-dom";
+
+import { resources } from "@utils/i18n";
+
+function LangLayout() {
+  const { i18n } = useTranslation();
+  const navigate = useNavigate();
+  const { pathname } = useLocation();
+  const { lang = LangCode.EN } = useParams();
+
+  useEffect(() => {
+    if (lang in resources) {
+      i18n.changeLanguage(lang);
+    } else {
+      navigate(pathname.replace(`/${lang}`, ""), { replace: true });
+    }
+  }, [lang]);
+
+  return <Outlet />;
+}
+
+export default LangLayout;
diff --git a/src/utils/i18n.ts b/src/utils/i18n.ts
index ed23426..baf2c63 100644
--- a/src/utils/i18n.ts
+++ b/src/utils/i18n.ts
@@ -20,6 +20,60 @@ export const resources = {
   }
 };
 
+export enum LangCode {
+  EN = "en",
+  KO = "ko",
+  JA = "ja"
+}
+export type Language = {
+  name: string;
+  value: string;
+  keywords: string[];
+  countries: string[];
+  fullLangCode: string;
+  langCode: (typeof LangCode)[keyof typeof LangCode];
+};
+
+export const SupportLanguage: Record<"ENGLISH" | "KOREAN" | "JAPANESE", Language> = {
+  ENGLISH: {
+    name: "English",
+    value: "english",
+    keywords: ["english", "en", "en-us", "us"],
+    countries: ["us"],
+    fullLangCode: "en-US",
+    langCode: LangCode.EN
+  },
+  KOREAN: {
+    name: "한국어",
+    value: "korean",
+    keywords: ["korean", "ko", "ko-kr", "kr"],
+    countries: ["kr"],
+    fullLangCode: "ko-KR",
+    langCode: LangCode.KO
+  },
+  JAPANESE: {
+    name: "日本語",
+    value: "japanese",
+    keywords: ["japanese", "ja", "ja-jp", "jp"],
+    countries: ["jp"],
+    fullLangCode: "ja-JP",
+    langCode: LangCode.JA
+  }
+};
+
+export function hasSupportLanguage(value: string): boolean {
+  return value
+    ? Object.values(SupportLanguage).some(({ keywords }) => keywords.includes(value.toLowerCase()))
+    : false;
+}
+
+export function matchSupportLanguage(value = SupportLanguage.ENGLISH.value): Language {
+  return (
+    Object.values(SupportLanguage).find(({ keywords }) => keywords.includes(value.toLowerCase())) ||
+    SupportLanguage.ENGLISH
+  );
+}
+
 i18n
   .use(Backend)
   .use(LanguageDetector)