diff --git a/devfront/src/components/layout/AppLayout.tsx b/devfront/src/components/layout/AppLayout.tsx
index 66b8d175..92b458a8 100644
--- a/devfront/src/components/layout/AppLayout.tsx
+++ b/devfront/src/components/layout/AppLayout.tsx
@@ -10,6 +10,7 @@ import { useEffect, useRef, useState } from "react";
 import { useAuth } from "react-oidc-context";
 import { NavLink, Outlet, useNavigate } from "react-router-dom";
 import { t } from "../../lib/i18n";
+import { resolveProfileRole } from "../../lib/role";
 import LanguageSelector from "../common/LanguageSelector";
 import { Toaster } from "../ui/toaster";
 
@@ -96,6 +97,14 @@ function AppLayout() {
     auth.user?.profile?.email?.toString().trim() ||
     t("ui.dev.profile.unknown_email", "unknown@example.com");
   const profileInitial = profileName.charAt(0).toUpperCase();
+  const currentRole = resolveProfileRole(
+    auth.user?.profile as Record<string, unknown> | undefined,
+  );
+  const isDevConsoleAllowed = [
+    "super_admin",
+    "tenant_admin",
+    "rp_admin",
+  ].includes(currentRole);
   const expiresAtSec = auth.user?.expires_at;
   const remainingMs =
     typeof expiresAtSec === "number" ? expiresAtSec * 1000 - nowMs : null;
@@ -191,23 +200,24 @@ function AppLayout() {
               </span>
             </div>
             <div className="flex flex-col gap-1">
-              {navItems.map(({ labelKey, labelFallback, to, icon: Icon }) => (
-                <NavLink
-                  key={to}
-                  to={to}
-                  className={({ isActive }) =>
-                    [
-                      "flex items-center gap-3 rounded-xl px-3 py-3 text-sm transition",
-                      isActive
-                        ? "bg-primary/10 text-primary shadow-[0_12px_40px_rgba(54,211,153,0.18)]"
-                        : "text-muted-foreground hover:bg-muted/10 hover:text-foreground",
-                    ].join(" ")
-                  }
-                >
-                  <Icon size={18} />
-                  <span>{t(labelKey, labelFallback)}</span>
-                </NavLink>
-              ))}
+              {isDevConsoleAllowed &&
+                navItems.map(({ labelKey, labelFallback, to, icon: Icon }) => (
+                  <NavLink
+                    key={to}
+                    to={to}
+                    className={({ isActive }) =>
+                      [
+                        "flex items-center gap-3 rounded-xl px-3 py-3 text-sm transition",
+                        isActive
+                          ? "bg-primary/10 text-primary shadow-[0_12px_40px_rgba(54,211,153,0.18)]"
+                          : "text-muted-foreground hover:bg-muted/10 hover:text-foreground",
+                      ].join(" ")
+                    }
+                  >
+                    <Icon size={18} />
+                    <span>{t(labelKey, labelFallback)}</span>
+                  </NavLink>
+                ))}
             </div>
           </nav>
         </div>
diff --git a/devfront/src/features/auth/AuthGuard.tsx b/devfront/src/features/auth/AuthGuard.tsx
index 26069583..0ab7c9fd 100644
--- a/devfront/src/features/auth/AuthGuard.tsx
+++ b/devfront/src/features/auth/AuthGuard.tsx
@@ -1,5 +1,7 @@
 import { useAuth } from "react-oidc-context";
 import { Navigate, Outlet } from "react-router-dom";
+import { t } from "../../lib/i18n";
+import { resolveProfileRole } from "../../lib/role";
 
 export default function AuthGuard() {
   const auth = useAuth();
@@ -16,5 +18,39 @@ export default function AuthGuard() {
     return <Navigate to="/login" replace />;
   }
 
+  const normalizedRole = resolveProfileRole(
+    auth.user?.profile as Record<string, unknown> | undefined,
+  );
+  const isTenantMember =
+    normalizedRole === "user" || normalizedRole === "tenant_member";
+
+  if (isTenantMember) {
+    return (
+      <div className="min-h-screen grid place-items-center bg-background text-foreground p-6">
+        <div className="max-w-lg w-full rounded-xl border border-border bg-card p-6 space-y-4">
+          <h1 className="text-xl font-semibold">
+            {t("msg.dev.auth.access_denied_title", "접근 권한이 없습니다.")}
+          </h1>
+          <p className="text-sm text-muted-foreground">
+            {t(
+              "msg.dev.auth.access_denied_description",
+              "DevFront는 관리자 전용 화면입니다. 권한이 필요하면 관리자에게 요청해 주세요.",
+            )}
+          </p>
+          <button
+            type="button"
+            className="inline-flex items-center rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:opacity-90"
+            onClick={() => {
+              auth.removeUser();
+              window.location.href = "/login";
+            }}
+          >
+            {t("ui.common.back_to_login", "로그인으로 돌아가기")}
+          </button>
+        </div>
+      </div>
+    );
+  }
+
   return <Outlet />;
 }
diff --git a/devfront/src/lib/role.ts b/devfront/src/lib/role.ts
new file mode 100644
index 00000000..f4400c72
--- /dev/null
+++ b/devfront/src/lib/role.ts
@@ -0,0 +1,25 @@
+export function normalizeRole(rawRole: unknown): string {
+  if (typeof rawRole !== "string") return "";
+  const role = rawRole.trim().toLowerCase();
+  if (role === "tenant_member") return "user";
+  if (role === "admin") return "tenant_admin";
+  if (role === "superadmin") return "super_admin";
+  if (role === "tenantadmin") return "tenant_admin";
+  if (role === "rpadmin") return "rp_admin";
+  return role;
+}
+
+export function resolveProfileRole(profile: Record<string, unknown> | undefined) {
+  if (!profile) return "";
+  const candidates = [
+    profile.role,
+    profile.grade,
+    profile["custom:role"],
+    profile["custom:grade"],
+  ];
+  for (const candidate of candidates) {
+    const normalized = normalizeRole(candidate);
+    if (normalized) return normalized;
+  }
+  return "";
+}