diff --git a/homeassistant/components/mqtt/abbreviations.py b/homeassistant/components/mqtt/abbreviations.py
index 1daa6f837c7..9ad5ca4ce1c 100644
--- a/homeassistant/components/mqtt/abbreviations.py
+++ b/homeassistant/components/mqtt/abbreviations.py
@@ -39,6 +39,7 @@ ABBREVIATIONS = {
     "cmd_tpl": "command_template",
     "cod_arm_req": "code_arm_required",
     "cod_dis_req": "code_disarm_required",
+    "cod_trig_req": "code_trigger_required",
     "curr_temp_t": "current_temperature_topic",
     "curr_temp_tpl": "current_temperature_template",
     "dev": "device",
@@ -147,6 +148,7 @@ ABBREVIATIONS = {
     "pl_ret": "payload_return_to_base",
     "pl_toff": "payload_turn_off",
     "pl_ton": "payload_turn_on",
+    "pl_trig": "payload_trigger",
     "pl_unlk": "payload_unlock",
     "pos_clsd": "position_closed",
     "pos_open": "position_open",
diff --git a/homeassistant/components/mqtt/alarm_control_panel.py b/homeassistant/components/mqtt/alarm_control_panel.py
index ffea92f14c3..3c324c0789b 100644
--- a/homeassistant/components/mqtt/alarm_control_panel.py
+++ b/homeassistant/components/mqtt/alarm_control_panel.py
@@ -12,6 +12,7 @@ from homeassistant.components.alarm_control_panel.const import (
     SUPPORT_ALARM_ARM_HOME,
     SUPPORT_ALARM_ARM_NIGHT,
     SUPPORT_ALARM_ARM_VACATION,
+    SUPPORT_ALARM_TRIGGER,
 )
 from homeassistant.const import (
     CONF_CODE,
@@ -43,12 +44,14 @@ _LOGGER = logging.getLogger(__name__)
 
 CONF_CODE_ARM_REQUIRED = "code_arm_required"
 CONF_CODE_DISARM_REQUIRED = "code_disarm_required"
+CONF_CODE_TRIGGER_REQUIRED = "code_trigger_required"
 CONF_PAYLOAD_DISARM = "payload_disarm"
 CONF_PAYLOAD_ARM_HOME = "payload_arm_home"
 CONF_PAYLOAD_ARM_AWAY = "payload_arm_away"
 CONF_PAYLOAD_ARM_NIGHT = "payload_arm_night"
 CONF_PAYLOAD_ARM_VACATION = "payload_arm_vacation"
 CONF_PAYLOAD_ARM_CUSTOM_BYPASS = "payload_arm_custom_bypass"
+CONF_PAYLOAD_TRIGGER = "payload_trigger"
 CONF_COMMAND_TEMPLATE = "command_template"
 
 MQTT_ALARM_ATTRIBUTES_BLOCKED = frozenset(
@@ -66,6 +69,7 @@ DEFAULT_ARM_AWAY = "ARM_AWAY"
 DEFAULT_ARM_HOME = "ARM_HOME"
 DEFAULT_ARM_CUSTOM_BYPASS = "ARM_CUSTOM_BYPASS"
 DEFAULT_DISARM = "DISARM"
+DEFAULT_TRIGGER = "TRIGGER"
 DEFAULT_NAME = "MQTT Alarm"
 
 REMOTE_CODE = "REMOTE_CODE"
@@ -76,6 +80,7 @@ PLATFORM_SCHEMA = mqtt.MQTT_BASE_PLATFORM_SCHEMA.extend(
         vol.Optional(CONF_CODE): cv.string,
         vol.Optional(CONF_CODE_ARM_REQUIRED, default=True): cv.boolean,
         vol.Optional(CONF_CODE_DISARM_REQUIRED, default=True): cv.boolean,
+        vol.Optional(CONF_CODE_TRIGGER_REQUIRED, default=True): cv.boolean,
         vol.Optional(
             CONF_COMMAND_TEMPLATE, default=DEFAULT_COMMAND_TEMPLATE
         ): cv.template,
@@ -91,6 +96,7 @@ PLATFORM_SCHEMA = mqtt.MQTT_BASE_PLATFORM_SCHEMA.extend(
             CONF_PAYLOAD_ARM_CUSTOM_BYPASS, default=DEFAULT_ARM_CUSTOM_BYPASS
         ): cv.string,
         vol.Optional(CONF_PAYLOAD_DISARM, default=DEFAULT_DISARM): cv.string,
+        vol.Optional(CONF_PAYLOAD_TRIGGER, default=DEFAULT_TRIGGER): cv.string,
         vol.Optional(CONF_RETAIN, default=mqtt.DEFAULT_RETAIN): cv.boolean,
         vol.Required(CONF_STATE_TOPIC): mqtt.valid_subscribe_topic,
         vol.Optional(CONF_VALUE_TEMPLATE): cv.template,
@@ -203,6 +209,7 @@ class MqttAlarm(MqttEntity, alarm.AlarmControlPanelEntity):
             | SUPPORT_ALARM_ARM_NIGHT
             | SUPPORT_ALARM_ARM_VACATION
             | SUPPORT_ALARM_ARM_CUSTOM_BYPASS
+            | SUPPORT_ALARM_TRIGGER
         )
 
     @property
@@ -286,6 +293,17 @@ class MqttAlarm(MqttEntity, alarm.AlarmControlPanelEntity):
         action = self._config[CONF_PAYLOAD_ARM_CUSTOM_BYPASS]
         await self._publish(code, action)
 
+    async def async_alarm_trigger(self, code=None):
+        """Send trigger command.
+
+        This method is a coroutine.
+        """
+        code_required = self._config[CONF_CODE_TRIGGER_REQUIRED]
+        if code_required and not self._validate_code(code, "triggering"):
+            return
+        action = self._config[CONF_PAYLOAD_TRIGGER]
+        await self._publish(code, action)
+
     async def _publish(self, code, action):
         """Publish via mqtt."""
         command_template = self._config[CONF_COMMAND_TEMPLATE]
diff --git a/tests/components/mqtt/test_alarm_control_panel.py b/tests/components/mqtt/test_alarm_control_panel.py
index 1351ae59496..2a74a75c241 100644
--- a/tests/components/mqtt/test_alarm_control_panel.py
+++ b/tests/components/mqtt/test_alarm_control_panel.py
@@ -18,6 +18,7 @@ from homeassistant.const import (
     SERVICE_ALARM_ARM_NIGHT,
     SERVICE_ALARM_ARM_VACATION,
     SERVICE_ALARM_DISARM,
+    SERVICE_ALARM_TRIGGER,
     STATE_ALARM_ARMED_AWAY,
     STATE_ALARM_ARMED_CUSTOM_BYPASS,
     STATE_ALARM_ARMED_HOME,
@@ -192,6 +193,7 @@ async def test_ignore_update_state_if_unknown_via_state_topic(hass, mqtt_mock):
         (SERVICE_ALARM_ARM_VACATION, "ARM_VACATION"),
         (SERVICE_ALARM_ARM_CUSTOM_BYPASS, "ARM_CUSTOM_BYPASS"),
         (SERVICE_ALARM_DISARM, "DISARM"),
+        (SERVICE_ALARM_TRIGGER, "TRIGGER"),
     ],
 )
 async def test_publish_mqtt_no_code(hass, mqtt_mock, service, payload):
@@ -222,6 +224,7 @@ async def test_publish_mqtt_no_code(hass, mqtt_mock, service, payload):
         (SERVICE_ALARM_ARM_VACATION, "ARM_VACATION"),
         (SERVICE_ALARM_ARM_CUSTOM_BYPASS, "ARM_CUSTOM_BYPASS"),
         (SERVICE_ALARM_DISARM, "DISARM"),
+        (SERVICE_ALARM_TRIGGER, "TRIGGER"),
     ],
 )
 async def test_publish_mqtt_with_code(hass, mqtt_mock, service, payload):
@@ -271,6 +274,7 @@ async def test_publish_mqtt_with_code(hass, mqtt_mock, service, payload):
         (SERVICE_ALARM_ARM_VACATION, "ARM_VACATION"),
         (SERVICE_ALARM_ARM_CUSTOM_BYPASS, "ARM_CUSTOM_BYPASS"),
         (SERVICE_ALARM_DISARM, "DISARM"),
+        (SERVICE_ALARM_TRIGGER, "TRIGGER"),
     ],
 )
 async def test_publish_mqtt_with_remote_code(hass, mqtt_mock, service, payload):
@@ -311,6 +315,7 @@ async def test_publish_mqtt_with_remote_code(hass, mqtt_mock, service, payload):
         (SERVICE_ALARM_ARM_VACATION, "ARM_VACATION"),
         (SERVICE_ALARM_ARM_CUSTOM_BYPASS, "ARM_CUSTOM_BYPASS"),
         (SERVICE_ALARM_DISARM, "DISARM"),
+        (SERVICE_ALARM_TRIGGER, "TRIGGER"),
     ],
 )
 async def test_publish_mqtt_with_remote_code_text(hass, mqtt_mock, service, payload):
@@ -351,6 +356,7 @@ async def test_publish_mqtt_with_remote_code_text(hass, mqtt_mock, service, payl
         (SERVICE_ALARM_ARM_VACATION, "ARM_VACATION", "code_arm_required"),
         (SERVICE_ALARM_ARM_CUSTOM_BYPASS, "ARM_CUSTOM_BYPASS", "code_arm_required"),
         (SERVICE_ALARM_DISARM, "DISARM", "code_disarm_required"),
+        (SERVICE_ALARM_TRIGGER, "TRIGGER", "code_trigger_required"),
     ],
 )
 async def test_publish_mqtt_with_code_required_false(
@@ -358,7 +364,8 @@ async def test_publish_mqtt_with_code_required_false(
 ):
     """Test publishing of MQTT messages when code is configured.
 
-    code_arm_required = False / code_disarm_required = false
+    code_arm_required = False / code_disarm_required = False /
+    code_trigger_required = False
     """
     config = copy.deepcopy(DEFAULT_CONFIG_CODE)
     config[alarm_control_panel.DOMAIN][disable_code] = False