diff --git a/manifests/keystone/authtoken.pp b/manifests/keystone/authtoken.pp
index 976c492..96ed5dd 100644
--- a/manifests/keystone/authtoken.pp
+++ b/manifests/keystone/authtoken.pp
@@ -181,6 +181,11 @@
 #   true/false
 #   Defaults to $::os_service_default.
 #
+# [*interface*]
+#  (Optional) Interface to use for the Identity API endpoint. Valid values are
+#  "public", "internal" or "admin".
+#  Defaults to $::os_service_default.
+#
 class panko::keystone::authtoken(
   $password,
   $username                       = 'panko',
@@ -216,6 +221,7 @@ class panko::keystone::authtoken(
   $token_cache_time               = $::os_service_default,
   $service_token_roles            = $::os_service_default,
   $service_token_roles_required   = $::os_service_default,
+  $interface                      = $::os_service_default,
 ) {
 
   include panko::deps
@@ -255,6 +261,7 @@ class panko::keystone::authtoken(
     token_cache_time               => $token_cache_time,
     service_token_roles            => $service_token_roles,
     service_token_roles_required   => $service_token_roles_required,
+    interface                      => $interface,
   }
 }
 
diff --git a/releasenotes/notes/keystone-authtoken-interface-fa6f3766fc97cc86.yaml b/releasenotes/notes/keystone-authtoken-interface-fa6f3766fc97cc86.yaml
new file mode 100644
index 0000000..f29c913
--- /dev/null
+++ b/releasenotes/notes/keystone-authtoken-interface-fa6f3766fc97cc86.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    The new ``panko::keystone::authtoken::interface`` parameter has been added,
+    which can be used to set the interface parameter in authtoken middleware.
diff --git a/spec/classes/panko_keystone_authtoken_spec.rb b/spec/classes/panko_keystone_authtoken_spec.rb
index 1eaa9fc..4296555 100644
--- a/spec/classes/panko_keystone_authtoken_spec.rb
+++ b/spec/classes/panko_keystone_authtoken_spec.rb
@@ -44,6 +44,7 @@ describe 'panko::keystone::authtoken' do
         is_expected.to contain_panko_config('keystone_authtoken/token_cache_time').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_panko_config('keystone_authtoken/service_token_roles').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_panko_config('keystone_authtoken/service_token_roles_required').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_panko_config('keystone_authtoken/interface').with_value('<SERVICE DEFAULT>')
       end
     end
 
@@ -84,6 +85,7 @@ describe 'panko::keystone::authtoken' do
           :token_cache_time                     => '301',
           :service_token_roles                  => ['service'],
           :service_token_roles_required         => false,
+          :interface                            => 'internal',
         })
       end
 
@@ -121,6 +123,7 @@ describe 'panko::keystone::authtoken' do
         is_expected.to contain_panko_config('keystone_authtoken/token_cache_time').with_value(params[:token_cache_time])
         is_expected.to contain_panko_config('keystone_authtoken/service_token_roles').with_value(params[:service_token_roles])
         is_expected.to contain_panko_config('keystone_authtoken/service_token_roles_required').with_value(params[:service_token_roles_required])
+        is_expected.to contain_panko_config('keystone_authtoken/interface').with_value(params[:interface])
       end
 
       it 'installs python memcache package' do