diff --git a/src/Keycloak.AuthServices.Sdk/Admin/Constants/KeycloakClientApiConstants.cs b/src/Keycloak.AuthServices.Sdk/Admin/Constants/KeycloakClientApiConstants.cs
index 7e4d7c52..61dfdc9d 100644
--- a/src/Keycloak.AuthServices.Sdk/Admin/Constants/KeycloakClientApiConstants.cs
+++ b/src/Keycloak.AuthServices.Sdk/Admin/Constants/KeycloakClientApiConstants.cs
@@ -44,8 +44,10 @@ internal static class KeycloakClientApiConstants
 
 
     internal const string GetGroups = $"{GetRealm}/groups";
+    internal const string CreateGroup = $"{GetRealm}/groups";
 
     internal const string GetGroup = $"{GetRealm}/groups/{{id}}";
+    internal const string UpdateGroup = $"{GetRealm}/groups/{{id}}";
 
     #endregion
 }
diff --git a/src/Keycloak.AuthServices.Sdk/Admin/IKeycloakGroupClient.cs b/src/Keycloak.AuthServices.Sdk/Admin/IKeycloakGroupClient.cs
index acd65722..c81bb985 100644
--- a/src/Keycloak.AuthServices.Sdk/Admin/IKeycloakGroupClient.cs
+++ b/src/Keycloak.AuthServices.Sdk/Admin/IKeycloakGroupClient.cs
@@ -30,4 +30,29 @@ public interface IKeycloakGroupClient
     /// <returns>The group representation.</returns>
     [Get(KeycloakClientApiConstants.GetGroup)]
     Task<Group> GetGroup(string realm, [AliasAs("id")] string groupId);
+
+    /// <summary>
+    /// Create a new group.
+    /// </summary>
+    /// <remarks>
+    /// Group name must be unique.
+    /// </remarks>
+    /// <param name="realm">Realm name (not ID).</param>
+    /// <param name="group">Group representation.</param>
+    /// <returns></returns>
+    [Post(KeycloakClientApiConstants.CreateGroup)]
+    [Headers("Content-Type: application/json")]
+    Task<HttpResponseMessage> CreateGroup(string realm, [Body] Group group);
+
+    /// <summary>
+    /// Update the group.
+    /// </summary>
+    /// <param name="realm">Realm name (not ID).</param>
+    /// <param name="groupId">group ID.</param>
+    /// <param name="group">Group representation.</param>
+    /// <returns></returns>
+    [Put(KeycloakClientApiConstants.UpdateGroup)]
+    [Headers("Content-Type: application/json")]
+    Task<HttpResponseMessage> UpdateGroup(string realm, [AliasAs("id")] string groupId, [Body] Group group);
+
 }