diff --git a/manifests/key_manager/barbican/service_user.pp b/manifests/key_manager/barbican/service_user.pp
index e12988f17..2c18e4079 100644
--- a/manifests/key_manager/barbican/service_user.pp
+++ b/manifests/key_manager/barbican/service_user.pp
@@ -27,6 +27,10 @@
 #  (Optional) Name of domain for $project_name
 #  Defaults to 'Default'
 #
+# [*system_scope*]
+#  (Optional) Scope for system operations.
+#  Defaults to $::os_service_default
+#
 # [*insecure*]
 #  (Optional) If true, explicitly allow TLS without checking server cert
 #  against any certificate authorities.  WARNING: not recommended.  Use with
@@ -65,6 +69,7 @@ class nova::key_manager::barbican::service_user(
   $project_name        = 'services',
   $user_domain_name    = 'Default',
   $project_domain_name = 'Default',
+  $system_scope        = $::os_service_default,
   $insecure            = $::os_service_default,
   $auth_type           = 'password',
   $auth_version        = $::os_service_default,
@@ -83,6 +88,7 @@ class nova::key_manager::barbican::service_user(
     project_name        => $project_name,
     user_domain_name    => $user_domain_name,
     project_domain_name => $project_domain_name,
+    system_scope        => $system_scope,
     insecure            => $insecure,
     auth_type           => $auth_type,
     auth_version        => $auth_version,
diff --git a/releasenotes/notes/system_scope-barbincan_service_user-855ece0e25484297.yaml b/releasenotes/notes/system_scope-barbincan_service_user-855ece0e25484297.yaml
new file mode 100644
index 000000000..927dbbcb7
--- /dev/null
+++ b/releasenotes/notes/system_scope-barbincan_service_user-855ece0e25484297.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    The ``nova::key_manager::barbican::service_user`` class now supports
+    the ``system_scope`` parameter.
diff --git a/spec/classes/nova_key_manager_barbican_service_user_spec.rb b/spec/classes/nova_key_manager_barbican_service_user_spec.rb
index b824f6f6d..f4ec4f556 100644
--- a/spec/classes/nova_key_manager_barbican_service_user_spec.rb
+++ b/spec/classes/nova_key_manager_barbican_service_user_spec.rb
@@ -16,6 +16,7 @@ describe 'nova::key_manager::barbican::service_user' do
           :project_name        => 'services',
           :user_domain_name    => 'Default',
           :project_domain_name => 'Default',
+          :system_scope        => '<SERVICE DEFAULT>',
           :insecure            => '<SERVICE DEFAULT>',
           :auth_type           => 'password',
           :auth_version        => '<SERVICE DEFAULT>',
@@ -35,6 +36,7 @@ describe 'nova::key_manager::barbican::service_user' do
           :project_name        => 'alt_services',
           :user_domain_name    => 'Domain1',
           :project_domain_name => 'Domain2',
+          :system_scope        => 'all',
           :insecure            => false,
           :auth_type           => 'v3password',
           :auth_version        => 'v3',
@@ -53,6 +55,7 @@ describe 'nova::key_manager::barbican::service_user' do
           :project_name        => 'alt_services',
           :user_domain_name    => 'Domain1',
           :project_domain_name => 'Domain2',
+          :system_scope        => 'all',
           :insecure            => false,
           :auth_type           => 'v3password',
           :auth_version        => 'v3',