diff --git a/manifests/api.pp b/manifests/api.pp
index 0682bb37..2d4cc6ef 100644
--- a/manifests/api.pp
+++ b/manifests/api.pp
@@ -8,12 +8,6 @@
 #   (optional) Type of authentication to be used.
 #   Defaults to 'keystone'
 #
-# [*os_region_name*]
-#   (optional) Some operations require manila to make API requests
-#   to Nova. This sets the keystone region to be used for these
-#   requests. For example, boot-from-share.
-#   Defaults to undef.
-#
 # [*package_ensure*]
 #   (optional) The state of the package
 #   Defaults to present
@@ -66,9 +60,14 @@
 #   (optional) DEPRECATED. The manila api port
 #   Defaults to undef
 #
+# [*os_region_name*]
+#   (optional) Some operations require manila to make API requests
+#   to Nova. This sets the keystone region to be used for these
+#   requests. For example, boot-from-share.
+#   Defaults to undef.
+#
 class manila::api (
   $auth_strategy                = 'keystone',
-  $os_region_name               = undef,
   $package_ensure               = 'present',
   $bind_host                    = '0.0.0.0',
   $default_share_type           = $::os_service_default,
@@ -82,6 +81,7 @@ class manila::api (
   $service_workers              = $::os_workers,
   # Deprecated
   $service_port                 = undef,
+  $os_region_name               = undef,
 ) {
 
   include ::manila::deps
@@ -92,6 +92,10 @@ class manila::api (
     warning('service port is deprecated and will be removed in a future release')
   }
 
+  if $os_region_name {
+    warning('The os_region_name option is deprecated and will be removed in a future release')
+  }
+
   if $::manila::params::api_package {
     package { 'manila-api':
       ensure => $package_ensure,
@@ -133,12 +137,6 @@ class manila::api (
     enable_proxy_headers_parsing => $enable_proxy_headers_parsing,
   }
 
-  if $os_region_name {
-    manila_config {
-      'DEFAULT/os_region_name': value => $os_region_name;
-    }
-  }
-
   if $auth_strategy == 'keystone' {
     manila_config {
       'DEFAULT/auth_strategy': value => $auth_strategy;
diff --git a/releasenotes/notes/deprecate-os-region-name-a8713ef980135d13.yaml b/releasenotes/notes/deprecate-os-region-name-a8713ef980135d13.yaml
new file mode 100644
index 00000000..9cb4a10b
--- /dev/null
+++ b/releasenotes/notes/deprecate-os-region-name-a8713ef980135d13.yaml
@@ -0,0 +1,5 @@
+---
+deprecations:
+  - |
+    The configuration option "os_region_name" from the [DEFAULT] is
+    deprecated and will be removed in a future release.
diff --git a/spec/classes/manila_api_spec.rb b/spec/classes/manila_api_spec.rb
index ff0ce3e8..5d5f8cd9 100644
--- a/spec/classes/manila_api_spec.rb
+++ b/spec/classes/manila_api_spec.rb
@@ -30,7 +30,6 @@ describe 'manila::api' do
       is_expected.to contain_manila_config('DEFAULT/auth_strategy').with(:value => 'keystone')
       is_expected.to contain_manila_config('DEFAULT/osapi_share_listen').with(:value => '0.0.0.0')
       is_expected.to contain_manila_config('DEFAULT/enabled_share_protocols').with(:value => '<SERVICE DEFAULT>')
-      is_expected.to_not contain_manila_config('DEFAULT/os_region_name')
       is_expected.to contain_manila_config('oslo_middleware/enable_proxy_headers_parsing').with_value('<SERVICE DEFAULT>')
       is_expected.to contain_manila_config('DEFAULT/default_share_type').with(:value => '<SERVICE DEFAULT>')
       is_expected.to contain_manila_config('DEFAULT/osapi_share_workers').with(:value => '2')
@@ -41,17 +40,6 @@ describe 'manila::api' do
     end
   end
 
-  describe 'with a custom region for nova' do
-    let :params do
-      req_params.merge({'os_region_name' => 'MyRegion'})
-    end
-    it 'should configure the region for nova' do
-      is_expected.to contain_manila_config('DEFAULT/os_region_name').with(
-        :value => 'MyRegion'
-      )
-    end
-  end
-
   describe 'with a default share type' do
     let :params do
       req_params.merge({'default_share_type' => 'default'})