diff --git a/manifests/api.pp b/manifests/api.pp
index 467d8d010..81749cccc 100644
--- a/manifests/api.pp
+++ b/manifests/api.pp
@@ -160,10 +160,6 @@
 #   enable this if you have a sanitizing proxy.
 #   Defaults to undef
 #
-# [*instance_name_template*]
-#   (optional) Template string to be used to generate instance names
-#   Defaults to undef
-#
 class nova::api(
   $enabled                                     = true,
   $manage_service                              = true,
@@ -199,7 +195,6 @@ class nova::api(
   # DEPRECATED PARAMETER
   $nova_metadata_wsgi_enabled                  = false,
   $use_forwarded_for                           = undef,
-  $instance_name_template                      = undef,
 ) inherits nova::params {
 
   include nova::deps
@@ -223,21 +218,6 @@ class nova::api(
     warning('The use_forwarded_for parameter has been deprecated.')
   }
 
-  if $instance_name_template != undef {
-    warning("The nova::api::instance_name_template parameter is deprecated. \
-Use the nova::instance_name_template parameter instead.")
-    nova_config {
-      'DEFAULT/instance_name_template': value => $instance_name_template;
-    }
-  } else {
-    # Try best to clean up the parameter
-    if defined(Class['nova']) and $::nova::instance_name_template == undef {
-      nova_config {
-        'DEFAULT/instance_name_template': value => $facts['os_service_default'];
-      }
-    }
-  }
-
   # enable metadata in eventlet if we do not run metadata via wsgi (nova::metadata)
   if ('metadata' in $enabled_apis and $service_name == 'httpd' and !$nova_metadata_wsgi_enabled) {
     $enable_metadata = true
diff --git a/manifests/init.pp b/manifests/init.pp
index c1a4d4964..f5c13d52d 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -358,7 +358,7 @@
 #
 # [*instance_name_template*]
 #   (optional) Template string to be used to generate instance names
-#   Defaults to undef
+#   Defaults to $facts['os_service_default']
 #
 # DEPRECATED PARAMETERS
 #
@@ -449,7 +449,7 @@ class nova(
   $purge_config                           = false,
   $my_ip                                  = $facts['os_service_default'],
   $dhcp_domain                            = $facts['os_service_default'],
-  $instance_name_template                 = undef,
+  $instance_name_template                 = $facts['os_service_default'],
   # DEPRECATED PARAMETERS
   $auth_strategy                          = undef,
   $upgrade_level_cert                     = undef,
@@ -575,14 +575,7 @@ but should be one of: ssh-rsa, ssh-dsa, ssh-ecdsa.")
     'DEFAULT/initial_ram_allocation_ratio':  value => $initial_ram_allocation_ratio;
     'DEFAULT/initial_disk_allocation_ratio': value => $initial_disk_allocation_ratio;
     'DEFAULT/dhcp_domain':                   value => $dhcp_domain;
-  }
-
-  # TODO(tkajinam): Change the default value to $facts['os_service_default'] when we
-  #                 remove nova::api::instance_name_template after Antelope.
-  if $instance_name_template != undef {
-    nova_config {
-      'DEFAULT/instance_name_template': value => $instance_name_template;
-    }
+    'DEFAULT/instance_name_template':        value => $instance_name_template;
   }
 
   oslo::messaging::rabbit {'nova_config':
diff --git a/releasenotes/notes/remove-api-instance_name_template-8b3b1e0afdbbba1a.yaml b/releasenotes/notes/remove-api-instance_name_template-8b3b1e0afdbbba1a.yaml
new file mode 100644
index 000000000..57c2c39b5
--- /dev/null
+++ b/releasenotes/notes/remove-api-instance_name_template-8b3b1e0afdbbba1a.yaml
@@ -0,0 +1,4 @@
+---
+upgrade:
+  - |
+    The ``nova::api::instance_name_template`` parameter has been removed.
diff --git a/spec/classes/nova_api_spec.rb b/spec/classes/nova_api_spec.rb
index c9be9cee8..9e809e946 100644
--- a/spec/classes/nova_api_spec.rb
+++ b/spec/classes/nova_api_spec.rb
@@ -45,7 +45,6 @@ describe 'nova::api' do
       it { is_expected.to contain_class('nova::availability_zone') }
 
       it 'configures various stuff' do
-        is_expected.to contain_nova_config('DEFAULT/instance_name_template').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_nova_config('wsgi/api_paste_config').with_value('api-paste.ini')
         is_expected.to contain_nova_config('DEFAULT/osapi_compute_listen').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_nova_config('DEFAULT/osapi_compute_listen_port').with_value('<SERVICE DEFAULT>')
@@ -157,17 +156,6 @@ describe 'nova::api' do
       it { is_expected.to_not contain_service('nova-api') }
     end
 
-    context 'with custom instance_name_template' do
-      before do
-        params.merge!({
-          :instance_name_template => 'instance-%08x',
-        })
-      end
-      it 'configures instance_name_template' do
-        is_expected.to contain_nova_config('DEFAULT/instance_name_template').with_value('instance-%08x');
-      end
-    end
-
     context 'when running nova API in wsgi compute, and enabling metadata' do
       before do
         params.merge!({ :service_name => 'httpd' })
diff --git a/spec/classes/nova_init_spec.rb b/spec/classes/nova_init_spec.rb
index 32e860d83..ed11bbca4 100644
--- a/spec/classes/nova_init_spec.rb
+++ b/spec/classes/nova_init_spec.rb
@@ -97,9 +97,7 @@ describe 'nova' do
         is_expected.to contain_nova_config('console/ssl_ciphers').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_nova_config('console/ssl_minimum_version').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_nova_config('DEFAULT/dhcp_domain').with_value('<SERVICE DEFAULT>')
-        # TODO(tkajinam): Uncomment this when we change default value of
-        #                 nova::instance_name_template
-        # is_expected.to contain_nova_config('DEFAULT/instance_name_template').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_nova_config('DEFAULT/instance_name_template').with_value('<SERVICE DEFAULT>')
       end
 
     end