diff --git a/company/src/App.tsx b/company/src/App.tsx
index adb28454..bc74943a 100644
--- a/company/src/App.tsx
+++ b/company/src/App.tsx
@@ -8,6 +8,7 @@ import About from './pages/About';
 import Blog from './pages/Blog';
 import Contact from './pages/Contact';
 import BlogDetail from './pages/BlogDetail';
+import NotFound from './pages/NotFound'; // 404 bileşenini import et
 import { LanguageProvider } from './context/LanguageContext';
 
 function App() {
@@ -23,6 +24,7 @@ function App() {
             <Route path="/blog" element={<Blog />} />
             <Route path="/contact" element={<Contact />} />
             <Route path="/blog/:id" element={<BlogDetail />} />
+            <Route path="*" element={<NotFound />} /> {/* Eşleşmeyen tüm yollar için 404 sayfasını göster */}
           </Routes>
         </Layout>
       </Router>
diff --git a/company/src/pages/NotFound.tsx b/company/src/pages/NotFound.tsx
new file mode 100644
index 00000000..48885bcc
--- /dev/null
+++ b/company/src/pages/NotFound.tsx
@@ -0,0 +1,19 @@
+import React from 'react';
+import { Frown } from 'lucide-react'; // Lucide-react kütüphanesinden Frown ikonunu import et
+
+const NotFound: React.FC = () => {
+  return (
+    <div className="flex flex-col items-center justify-center min-h-screen bg-white text-gray-700 p-4"> {/* Arka plan ve metin rengi güncellendi, padding eklendi */}
+      <Frown size={128} className="text-blue-600 mb-6" /> {/* İkon boyutu ve rengi güncellendi */}
+      <h1 className="text-7xl font-bold text-gray-900 mb-4">404</h1> {/* Başlık boyutu ve rengi güncellendi */}
+      <p className="text-xl text-gray-600 mb-8 text-center max-w-md"> {/* Metin rengi, margin ve max-width güncellendi */}
+        Üzgünüz, aradığınız sayfa bulunamadı. Lütfen URL'yi kontrol edin veya ana sayfaya dönün.
+      </p>
+      <a href="/" className="px-6 py-3 bg-blue-600 text-white rounded-lg hover:bg-blue-700 transition duration-300 text-lg font-semibold"> {/* Buton stili güncellendi */}
+        Ana Sayfaya Dön
+      </a>
+    </div>
+  );
+};
+
+export default NotFound;