diff --git a/eeg_backend/src/main/java/at/mueller/eeg/backend/iam/service/AdminIamService.java b/eeg_backend/src/main/java/at/mueller/eeg/backend/iam/service/AdminIamService.java
index 7acad0d..c359e7a 100644
--- a/eeg_backend/src/main/java/at/mueller/eeg/backend/iam/service/AdminIamService.java
+++ b/eeg_backend/src/main/java/at/mueller/eeg/backend/iam/service/AdminIamService.java
@@ -26,6 +26,11 @@ public class AdminIamService {
         return userRepository.findAllByStatusAndEmailVerified(RegistrationStatus.PENDING, true);
     }
 
+    @Transactional(readOnly = true)
+    public List<User> getAllUsers() {
+        return userRepository.findAllByOrderByCreatedAtDesc();
+    }
+
     @Transactional
     public void approveUser(UUID userId) {
         User user = userRepository.findById(userId)
diff --git a/eeg_backend/src/test/java/at/mueller/eeg/backend/iam/service/AdminIamServiceTest.java b/eeg_backend/src/test/java/at/mueller/eeg/backend/iam/service/AdminIamServiceTest.java
index 4e1c9d4..2a37297 100644
--- a/eeg_backend/src/test/java/at/mueller/eeg/backend/iam/service/AdminIamServiceTest.java
+++ b/eeg_backend/src/test/java/at/mueller/eeg/backend/iam/service/AdminIamServiceTest.java
@@ -124,4 +124,22 @@ class AdminIamServiceTest {
 
         assertThrows(ResponseStatusException.class, () -> adminIamService.rejectUser(unknownId));
     }
+
+    @Test
+    void getAllUsers() {
+        User approvedUser = new User();
+        approvedUser.setId(UUID.randomUUID());
+        approvedUser.setEmail("approved@example.com");
+        approvedUser.setStatus(RegistrationStatus.APPROVED);
+
+        when(userRepository.findAllByOrderByCreatedAtDesc())
+                .thenReturn(List.of(testUser, approvedUser));
+
+        List<User> result = adminIamService.getAllUsers();
+
+        assertEquals(2, result.size());
+        assertEquals("test@example.com", result.get(0).getEmail());
+        assertEquals("approved@example.com", result.get(1).getEmail());
+        verify(userRepository).findAllByOrderByCreatedAtDesc();
+    }
 }