diff --git a/crates/api-types/src/v4.rs b/crates/api-types/src/v4.rs
index 60263d5f2..b22b1fd6d 100644
--- a/crates/api-types/src/v4.rs
+++ b/crates/api-types/src/v4.rs
@@ -19,3 +19,5 @@ pub mod user;
 
 #[cfg(feature = "conv")]
 mod token_restriction_conv;
+#[cfg(feature = "conv")]
+mod user_conv;
diff --git a/crates/api-types/src/v4/user.rs b/crates/api-types/src/v4/user.rs
index 973c20cef..a9fd031bd 100644
--- a/crates/api-types/src/v4/user.rs
+++ b/crates/api-types/src/v4/user.rs
@@ -13,7 +13,52 @@
 // SPDX-License-Identifier: Apache-2.0
 //! User resource types.
 
+use serde::{Deserialize, Serialize};
+
 pub use crate::v3::user::{
-    Federation, FederationProtocol, User, UserCreate, UserCreateRequest, UserList,
-    UserListParameters, UserOptions, UserResponse, UserUpdateRequest,
+    Federation, FederationProtocol, User, UserCreate, UserCreateRequest, UserList, UserOptions,
+    UserResponse, UserUpdateRequest,
 };
+
+/// User list parameters.
+///
+/// V4 extends the v3 listing with a `type` filter; this is intentionally a
+/// v4-only parameter (Python Keystone does not support it on v3).
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
+#[cfg_attr(feature = "openapi", derive(utoipa::IntoParams))]
+#[cfg_attr(feature = "validate", derive(validator::Validate))]
+pub struct UserListParameters {
+    /// Filter users by Domain ID.
+    #[cfg_attr(feature = "validate", validate(length(max = 64)))]
+    pub domain_id: Option<String>,
+
+    /// Filter users by Name.
+    #[cfg_attr(feature = "validate", validate(length(max = 255)))]
+    pub name: Option<String>,
+
+    /// Filter users by the federated unique ID.
+    #[cfg_attr(feature = "validate", validate(length(max = 64)))]
+    pub unique_id: Option<String>,
+
+    /// Filter users by type (`local`, `federated`, `nonlocal`, `all`).
+    #[serde(rename = "type")]
+    pub user_type: Option<UserType>,
+}
+
+/// User type filter for listing users.
+#[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize)]
+#[cfg_attr(feature = "openapi", derive(utoipa::ToSchema))]
+#[serde(rename_all = "lowercase")]
+pub enum UserType {
+    /// All users (default behavior).
+    All,
+    /// Federated users only.
+    Federated,
+    /// Local users only.
+    Local,
+    /// Non-local users only.
+    NonLocal,
+    /// Service account users only.
+    #[serde(rename = "service_account")]
+    ServiceAccount,
+}
diff --git a/crates/api-types/src/v4/user_conv.rs b/crates/api-types/src/v4/user_conv.rs
new file mode 100644
index 000000000..10a5863e8
--- /dev/null
+++ b/crates/api-types/src/v4/user_conv.rs
@@ -0,0 +1,40 @@
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// SPDX-License-Identifier: Apache-2.0
+
+use openstack_keystone_core_types::identity as provider_types;
+
+use crate::v4::user as api_types;
+
+impl From<api_types::UserType> for provider_types::UserType {
+    fn from(value: api_types::UserType) -> Self {
+        match value {
+            api_types::UserType::All => Self::All,
+            api_types::UserType::Federated => Self::Federated,
+            api_types::UserType::Local => Self::Local,
+            api_types::UserType::NonLocal => Self::NonLocal,
+            api_types::UserType::ServiceAccount => Self::ServiceAccount,
+        }
+    }
+}
+
+impl From<api_types::UserListParameters> for provider_types::UserListParameters {
+    fn from(value: api_types::UserListParameters) -> Self {
+        Self {
+            domain_id: value.domain_id,
+            name: value.name,
+            unique_id: value.unique_id,
+            user_type: value.user_type.map(Into::into),
+        }
+    }
+}
diff --git a/crates/keystone/src/api/v4/user/mod.rs b/crates/keystone/src/api/v4/user/mod.rs
index 0d77c850e..ae1235665 100644
--- a/crates/keystone/src/api/v4/user/mod.rs
+++ b/crates/keystone/src/api/v4/user/mod.rs
@@ -317,6 +317,41 @@ mod tests {
         let _res: UserList = serde_json::from_slice(&body).unwrap();
     }
 
+    #[tokio::test]
+    async fn test_list_qp_type() {
+        let vsc = test_fixture_scoped();
+        let mut identity_mock = MockIdentityProvider::default();
+        identity_mock
+            .expect_list_users()
+            .withf(|_, qp: &UserListParameters| qp.user_type == Some(UserType::Local))
+            .returning(|_, _| Ok(Vec::new()));
+
+        let state = get_mocked_state(
+            Provider::mocked_builder().mock_identity(identity_mock),
+            true,
+            None,
+        )
+        .await;
+
+        let mut api = openapi_router()
+            .layer(TraceLayer::new_for_http())
+            .with_state(state);
+
+        let response = api
+            .as_service()
+            .oneshot(
+                Request::builder()
+                    .uri("/?type=local")
+                    .extension(vsc)
+                    .body(Body::empty())
+                    .unwrap(),
+            )
+            .await
+            .unwrap();
+
+        assert_eq!(response.status(), StatusCode::OK);
+    }
+
     #[tokio::test]
     async fn test_list_unauth() {
         let state = get_mocked_state(Provider::mocked_builder(), false, None).await;
diff --git a/crates/keystone/src/api/v4/user/types.rs b/crates/keystone/src/api/v4/user/types.rs
index 6ebd16271..e0d947e33 100644
--- a/crates/keystone/src/api/v4/user/types.rs
+++ b/crates/keystone/src/api/v4/user/types.rs
@@ -14,6 +14,7 @@
 //! User resource types.
 
 pub use crate::api::v3::user::types::{
-    Federation, FederationProtocol, User, UserCreate, UserCreateRequest, UserList,
-    UserListParameters, UserOptions, UserResponse, UserUpdateRequest,
+    Federation, FederationProtocol, User, UserCreate, UserCreateRequest, UserList, UserOptions,
+    UserResponse, UserUpdateRequest,
 };
+pub use openstack_keystone_api_types::v4::user::UserListParameters;