diff --git a/manifests/conductor.pp b/manifests/conductor.pp
index 3e210489..c8f667ea 100644
--- a/manifests/conductor.pp
+++ b/manifests/conductor.pp
@@ -108,6 +108,12 @@
 #   requested. One of "netboot" or "local".
 #   Defaults to $::os_service_default
 #
+# [*default_boot_mode*]
+#   (optional) Default boot mode to use when no boot mode is explicitly
+#   requested in node's driver_info, capabilities or in the "instance_info"
+#   configuration.requested. One of "bios" or "uefi".
+#   Defaults to $::os_service_default
+#
 # [*cleaning_network_name*]
 #   (optional) If provided the name will be converted to UUID and set
 #   as value of neutron/cleaning_network option in ironic.conf
@@ -183,6 +189,7 @@ class ironic::conductor (
   $configdrive_swift_container         = $::os_service_default,
   $inspect_timeout                     = $::os_service_default,
   $default_boot_option                 = $::os_service_default,
+  $default_boot_mode                   = $::os_service_default,
   $port_setup_delay                    = $::os_service_default,
   $cleaning_network_name               = undef,
   $provisioning_network_name           = undef,
@@ -271,6 +278,7 @@ class ironic::conductor (
     'conductor/configdrive_swift_container':      value => $configdrive_swift_container;
     'conductor/inspect_timeout':                  value => $inspect_timeout;
     'deploy/default_boot_option':                 value => $default_boot_option;
+    'deploy/default_boot_mode':                   value => $default_boot_mode;
     'neutron/port_setup_delay':                   value => $port_setup_delay;
     'conductor/power_state_change_timeout':       value => $power_state_change_timeout;
     'conductor/sync_power_state_interval':        value => $sync_power_state_interval;
diff --git a/releasenotes/notes/default-boot-mode-1dc27454b02a56e5.yaml b/releasenotes/notes/default-boot-mode-1dc27454b02a56e5.yaml
new file mode 100644
index 00000000..619df249
--- /dev/null
+++ b/releasenotes/notes/default-boot-mode-1dc27454b02a56e5.yaml
@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    Adds new parameter ``ironic::conductor::default_boot_mode`` to specify
+    the default boot mode ("bios" or "uefi") to use when no boot mode is
+    required explicitly.
diff --git a/spec/classes/ironic_conductor_spec.rb b/spec/classes/ironic_conductor_spec.rb
index ad53a220..37408833 100644
--- a/spec/classes/ironic_conductor_spec.rb
+++ b/spec/classes/ironic_conductor_spec.rb
@@ -78,6 +78,7 @@ describe 'ironic::conductor' do
       is_expected.to contain_ironic_config('conductor/configdrive_swift_container').with(:value => '<SERVICE DEFAULT>')
       is_expected.to contain_ironic_config('conductor/inspect_timeout').with(:value => '<SERVICE DEFAULT>')
       is_expected.to contain_ironic_config('deploy/default_boot_option').with(:value => '<SERVICE DEFAULT>')
+      is_expected.to contain_ironic_config('deploy/default_boot_mode').with(:value => '<SERVICE DEFAULT>')
       is_expected.to contain_ironic_config('neutron/port_setup_delay').with(:value => '<SERVICE DEFAULT>')
       is_expected.to contain_ironic_config('conductor/power_state_change_timeout').with(:value => '<SERVICE DEFAULT>')
       is_expected.to contain_ironic_config('conductor/sync_power_state_interval').with(:value => '<SERVICE DEFAULT>')
@@ -103,6 +104,7 @@ describe 'ironic::conductor' do
           :configdrive_use_swift           => true,
           :configdrive_swift_container     => 'cont',
           :default_boot_option             => 'local',
+          :default_boot_mode               => 'uefi',
           :port_setup_delay                => '15',
           :power_state_change_timeout      => '300',
           :sync_power_state_interval       => 120,
@@ -127,6 +129,7 @@ describe 'ironic::conductor' do
         is_expected.to contain_ironic_config('conductor/configdrive_use_swift').with_value(p[:configdrive_use_swift])
         is_expected.to contain_ironic_config('conductor/configdrive_swift_container').with_value(p[:configdrive_swift_container])
         is_expected.to contain_ironic_config('deploy/default_boot_option').with_value(p[:default_boot_option])
+        is_expected.to contain_ironic_config('deploy/default_boot_mode').with_value(p[:default_boot_mode])
         is_expected.to contain_ironic_config('neutron/port_setup_delay').with_value(p[:port_setup_delay])
         is_expected.to contain_ironic_config('conductor/power_state_change_timeout').with_value(p[:power_state_change_timeout])
         is_expected.to contain_ironic_config('conductor/sync_power_state_interval').with_value(p[:sync_power_state_interval])