diff --git a/changelogs/fragments/4526-keycloak-realm-types.yaml b/changelogs/fragments/4526-keycloak-realm-types.yaml
new file mode 100644
index 0000000000..ff1699d7f8
--- /dev/null
+++ b/changelogs/fragments/4526-keycloak-realm-types.yaml
@@ -0,0 +1,2 @@
+bugfixes:
+  - keycloak - fix parameters types for ``defaultDefaultClientScopes`` and ``defaultOptionalClientScopes`` from list of dictionaries to list of strings (https://github.com/ansible-collections/community.general/pull/4526).
diff --git a/plugins/modules/identity/keycloak/keycloak_realm.py b/plugins/modules/identity/keycloak/keycloak_realm.py
index da37fa2723..d07e0fc723 100644
--- a/plugins/modules/identity/keycloak/keycloak_realm.py
+++ b/plugins/modules/identity/keycloak/keycloak_realm.py
@@ -155,7 +155,7 @@ options:
         aliases:
             - defaultDefaultClientScopes
         type: list
-        elements: dict
+        elements: str
     default_groups:
         description:
             - The realm default groups.
@@ -175,7 +175,7 @@ options:
         aliases:
             - defaultOptionalClientScopes
         type: list
-        elements: dict
+        elements: str
     default_roles:
         description:
             - The realm default roles.
@@ -618,10 +618,10 @@ def main():
         brute_force_protected=dict(type='bool', aliases=['bruteForceProtected']),
         client_authentication_flow=dict(type='str', aliases=['clientAuthenticationFlow']),
         client_scope_mappings=dict(type='dict', aliases=['clientScopeMappings']),
-        default_default_client_scopes=dict(type='list', elements='dict', aliases=['defaultDefaultClientScopes']),
+        default_default_client_scopes=dict(type='list', elements='str', aliases=['defaultDefaultClientScopes']),
         default_groups=dict(type='list', elements='dict', aliases=['defaultGroups']),
         default_locale=dict(type='str', aliases=['defaultLocale']),
-        default_optional_client_scopes=dict(type='list', elements='dict', aliases=['defaultOptionalClientScopes']),
+        default_optional_client_scopes=dict(type='list', elements='str', aliases=['defaultOptionalClientScopes']),
         default_roles=dict(type='list', elements='dict', aliases=['defaultRoles']),
         default_signature_algorithm=dict(type='str', aliases=['defaultSignatureAlgorithm']),
         direct_grant_flow=dict(type='str', aliases=['directGrantFlow']),