diff --git a/homeassistant/components/humidifier/device_action.py b/homeassistant/components/humidifier/device_action.py
new file mode 100644
index 00000000000..a6194994a9c
--- /dev/null
+++ b/homeassistant/components/humidifier/device_action.py
@@ -0,0 +1,121 @@
+"""Provides device actions for Humidifier."""
+from typing import List, Optional
+
+import voluptuous as vol
+
+from homeassistant.components.device_automation import toggle_entity
+from homeassistant.const import (
+    ATTR_ENTITY_ID,
+    CONF_DEVICE_ID,
+    CONF_DOMAIN,
+    CONF_ENTITY_ID,
+    CONF_TYPE,
+)
+from homeassistant.core import Context, HomeAssistant
+from homeassistant.helpers import entity_registry
+import homeassistant.helpers.config_validation as cv
+
+from . import DOMAIN, const
+
+SET_HUMIDITY_SCHEMA = cv.DEVICE_ACTION_BASE_SCHEMA.extend(
+    {
+        vol.Required(CONF_TYPE): "set_humidity",
+        vol.Required(CONF_ENTITY_ID): cv.entity_domain(DOMAIN),
+        vol.Required(const.ATTR_HUMIDITY): vol.Coerce(int),
+    }
+)
+
+SET_MODE_SCHEMA = cv.DEVICE_ACTION_BASE_SCHEMA.extend(
+    {
+        vol.Required(CONF_TYPE): "set_mode",
+        vol.Required(CONF_ENTITY_ID): cv.entity_domain(DOMAIN),
+        vol.Required(const.ATTR_MODE): cv.string,
+    }
+)
+
+ONOFF_SCHEMA = toggle_entity.ACTION_SCHEMA.extend({vol.Required(CONF_DOMAIN): DOMAIN})
+
+ACTION_SCHEMA = vol.Any(SET_HUMIDITY_SCHEMA, SET_MODE_SCHEMA, ONOFF_SCHEMA)
+
+
+async def async_get_actions(hass: HomeAssistant, device_id: str) -> List[dict]:
+    """List device actions for Humidifier devices."""
+    registry = await entity_registry.async_get_registry(hass)
+    actions = await toggle_entity.async_get_actions(hass, device_id, DOMAIN)
+
+    # Get all the integrations entities for this device
+    for entry in entity_registry.async_entries_for_device(registry, device_id):
+        if entry.domain != DOMAIN:
+            continue
+
+        state = hass.states.get(entry.entity_id)
+
+        actions.append(
+            {
+                CONF_DEVICE_ID: device_id,
+                CONF_DOMAIN: DOMAIN,
+                CONF_ENTITY_ID: entry.entity_id,
+                CONF_TYPE: "set_humidity",
+            }
+        )
+
+        # We need a state or else we can't populate the available modes.
+        if state is None:
+            continue
+
+        if state.attributes["supported_features"] & const.SUPPORT_MODES:
+            actions.append(
+                {
+                    CONF_DEVICE_ID: device_id,
+                    CONF_DOMAIN: DOMAIN,
+                    CONF_ENTITY_ID: entry.entity_id,
+                    CONF_TYPE: "set_mode",
+                }
+            )
+
+    return actions
+
+
+async def async_call_action_from_config(
+    hass: HomeAssistant, config: dict, variables: dict, context: Optional[Context]
+) -> None:
+    """Execute a device action."""
+    config = ACTION_SCHEMA(config)
+
+    service_data = {ATTR_ENTITY_ID: config[CONF_ENTITY_ID]}
+
+    if config[CONF_TYPE] == "set_humidity":
+        service = const.SERVICE_SET_HUMIDITY
+        service_data[const.ATTR_HUMIDITY] = config[const.ATTR_HUMIDITY]
+    elif config[CONF_TYPE] == "set_mode":
+        service = const.SERVICE_SET_MODE
+        service_data[const.ATTR_MODE] = config[const.ATTR_MODE]
+    else:
+        return await toggle_entity.async_call_action_from_config(
+            hass, config, variables, context, DOMAIN
+        )
+
+    await hass.services.async_call(
+        DOMAIN, service, service_data, blocking=True, context=context
+    )
+
+
+async def async_get_action_capabilities(hass, config):
+    """List action capabilities."""
+    state = hass.states.get(config[CONF_ENTITY_ID])
+    action_type = config[CONF_TYPE]
+
+    fields = {}
+
+    if action_type == "set_humidity":
+        fields[vol.Required(const.ATTR_HUMIDITY)] = vol.Coerce(int)
+    elif action_type == "set_mode":
+        if state:
+            available_modes = state.attributes.get(const.ATTR_AVAILABLE_MODES, [])
+        else:
+            available_modes = []
+        fields[vol.Required(const.ATTR_MODE)] = vol.In(available_modes)
+    else:
+        return {}
+
+    return {"extra_fields": vol.Schema(fields)}
diff --git a/homeassistant/components/humidifier/strings.json b/homeassistant/components/humidifier/strings.json
new file mode 100644
index 00000000000..de7086cd053
--- /dev/null
+++ b/homeassistant/components/humidifier/strings.json
@@ -0,0 +1,18 @@
+{
+  "title": "Humidifier",
+  "device_automation": {
+    "action_type": {
+      "set_humidity": "Set humidity for {entity_name}",
+      "set_mode": "Change mode on {entity_name}",
+      "toggle": "Toggle {entity_name}",
+      "turn_on": "Turn on {entity_name}",
+      "turn_off": "Turn off {entity_name}"
+    }
+  },
+  "state": {
+    "_": {
+      "off": "[%key:common::state::off%]",
+      "on": "[%key:common::state::on%]"
+    }
+  }
+}
diff --git a/tests/components/humidifier/test_device_action.py b/tests/components/humidifier/test_device_action.py
new file mode 100644
index 00000000000..91b7819e18b
--- /dev/null
+++ b/tests/components/humidifier/test_device_action.py
@@ -0,0 +1,358 @@
+"""The tests for Humidifier device actions."""
+import pytest
+import voluptuous_serialize
+
+import homeassistant.components.automation as automation
+from homeassistant.components.humidifier import DOMAIN, const, device_action
+from homeassistant.const import STATE_ON
+from homeassistant.helpers import config_validation as cv, device_registry
+from homeassistant.setup import async_setup_component
+
+from tests.common import (
+    MockConfigEntry,
+    assert_lists_same,
+    async_get_device_automations,
+    async_mock_service,
+    mock_device_registry,
+    mock_registry,
+)
+
+
+@pytest.fixture
+def device_reg(hass):
+    """Return an empty, loaded, registry."""
+    return mock_device_registry(hass)
+
+
+@pytest.fixture
+def entity_reg(hass):
+    """Return an empty, loaded, registry."""
+    return mock_registry(hass)
+
+
+async def test_get_actions(hass, device_reg, entity_reg):
+    """Test we get the expected actions from a humidifier."""
+    config_entry = MockConfigEntry(domain="test", data={})
+    config_entry.add_to_hass(hass)
+    device_entry = device_reg.async_get_or_create(
+        config_entry_id=config_entry.entry_id,
+        connections={(device_registry.CONNECTION_NETWORK_MAC, "12:34:56:AB:CD:EF")},
+    )
+    entity_reg.async_get_or_create(DOMAIN, "test", "5678", device_id=device_entry.id)
+    hass.states.async_set("humidifier.test_5678", STATE_ON, {})
+    hass.states.async_set(
+        "humidifier.test_5678", "attributes", {"supported_features": 1}
+    )
+    expected_actions = [
+        {
+            "domain": DOMAIN,
+            "type": "turn_on",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+        {
+            "domain": DOMAIN,
+            "type": "turn_off",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+        {
+            "domain": DOMAIN,
+            "type": "toggle",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+        {
+            "domain": DOMAIN,
+            "type": "set_humidity",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+        {
+            "domain": DOMAIN,
+            "type": "set_mode",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+    ]
+    actions = await async_get_device_automations(hass, "action", device_entry.id)
+    assert_lists_same(actions, expected_actions)
+
+
+async def test_get_action_no_modes(hass, device_reg, entity_reg):
+    """Test we get the expected actions from a humidifier."""
+    config_entry = MockConfigEntry(domain="test", data={})
+    config_entry.add_to_hass(hass)
+    device_entry = device_reg.async_get_or_create(
+        config_entry_id=config_entry.entry_id,
+        connections={(device_registry.CONNECTION_NETWORK_MAC, "12:34:56:AB:CD:EF")},
+    )
+    entity_reg.async_get_or_create(DOMAIN, "test", "5678", device_id=device_entry.id)
+    hass.states.async_set("humidifier.test_5678", STATE_ON, {})
+    hass.states.async_set(
+        "humidifier.test_5678", "attributes", {"supported_features": 0}
+    )
+    expected_actions = [
+        {
+            "domain": DOMAIN,
+            "type": "turn_on",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+        {
+            "domain": DOMAIN,
+            "type": "turn_off",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+        {
+            "domain": DOMAIN,
+            "type": "toggle",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+        {
+            "domain": DOMAIN,
+            "type": "set_humidity",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+    ]
+    actions = await async_get_device_automations(hass, "action", device_entry.id)
+    assert_lists_same(actions, expected_actions)
+
+
+async def test_get_action_no_state(hass, device_reg, entity_reg):
+    """Test we get the expected actions from a humidifier."""
+    config_entry = MockConfigEntry(domain="test", data={})
+    config_entry.add_to_hass(hass)
+    device_entry = device_reg.async_get_or_create(
+        config_entry_id=config_entry.entry_id,
+        connections={(device_registry.CONNECTION_NETWORK_MAC, "12:34:56:AB:CD:EF")},
+    )
+    entity_reg.async_get_or_create(DOMAIN, "test", "5678", device_id=device_entry.id)
+    expected_actions = [
+        {
+            "domain": DOMAIN,
+            "type": "turn_on",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+        {
+            "domain": DOMAIN,
+            "type": "turn_off",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+        {
+            "domain": DOMAIN,
+            "type": "toggle",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+        {
+            "domain": DOMAIN,
+            "type": "set_humidity",
+            "device_id": device_entry.id,
+            "entity_id": "humidifier.test_5678",
+        },
+    ]
+    actions = await async_get_device_automations(hass, "action", device_entry.id)
+    assert_lists_same(actions, expected_actions)
+
+
+async def test_action(hass):
+    """Test for actions."""
+    hass.states.async_set(
+        "humidifier.entity",
+        STATE_ON,
+        {const.ATTR_AVAILABLE_MODES: [const.MODE_HOME, const.MODE_AWAY]},
+    )
+
+    assert await async_setup_component(
+        hass,
+        automation.DOMAIN,
+        {
+            automation.DOMAIN: [
+                {
+                    "trigger": {
+                        "platform": "event",
+                        "event_type": "test_event_turn_off",
+                    },
+                    "action": {
+                        "domain": DOMAIN,
+                        "device_id": "abcdefgh",
+                        "entity_id": "humidifier.entity",
+                        "type": "turn_off",
+                    },
+                },
+                {
+                    "trigger": {
+                        "platform": "event",
+                        "event_type": "test_event_turn_on",
+                    },
+                    "action": {
+                        "domain": DOMAIN,
+                        "device_id": "abcdefgh",
+                        "entity_id": "humidifier.entity",
+                        "type": "turn_on",
+                    },
+                },
+                {
+                    "trigger": {"platform": "event", "event_type": "test_event_toggle"},
+                    "action": {
+                        "domain": DOMAIN,
+                        "device_id": "abcdefgh",
+                        "entity_id": "humidifier.entity",
+                        "type": "toggle",
+                    },
+                },
+                {
+                    "trigger": {
+                        "platform": "event",
+                        "event_type": "test_event_set_humidity",
+                    },
+                    "action": {
+                        "domain": DOMAIN,
+                        "device_id": "abcdefgh",
+                        "entity_id": "humidifier.entity",
+                        "type": "set_humidity",
+                        "humidity": 35,
+                    },
+                },
+                {
+                    "trigger": {
+                        "platform": "event",
+                        "event_type": "test_event_set_mode",
+                    },
+                    "action": {
+                        "domain": DOMAIN,
+                        "device_id": "abcdefgh",
+                        "entity_id": "humidifier.entity",
+                        "type": "set_mode",
+                        "mode": const.MODE_AWAY,
+                    },
+                },
+            ]
+        },
+    )
+
+    set_humidity_calls = async_mock_service(hass, "humidifier", "set_humidity")
+    set_mode_calls = async_mock_service(hass, "humidifier", "set_mode")
+    turn_on_calls = async_mock_service(hass, "humidifier", "turn_on")
+    turn_off_calls = async_mock_service(hass, "humidifier", "turn_off")
+    toggle_calls = async_mock_service(hass, "humidifier", "toggle")
+
+    assert len(set_humidity_calls) == 0
+    assert len(set_mode_calls) == 0
+    assert len(turn_on_calls) == 0
+    assert len(turn_off_calls) == 0
+    assert len(toggle_calls) == 0
+
+    hass.bus.async_fire("test_event_set_humidity")
+    await hass.async_block_till_done()
+    assert len(set_humidity_calls) == 1
+    assert len(set_mode_calls) == 0
+    assert len(turn_on_calls) == 0
+    assert len(turn_off_calls) == 0
+    assert len(toggle_calls) == 0
+
+    hass.bus.async_fire("test_event_set_mode")
+    await hass.async_block_till_done()
+    assert len(set_humidity_calls) == 1
+    assert len(set_mode_calls) == 1
+    assert len(turn_on_calls) == 0
+    assert len(turn_off_calls) == 0
+    assert len(toggle_calls) == 0
+
+    hass.bus.async_fire("test_event_turn_off")
+    await hass.async_block_till_done()
+    assert len(set_humidity_calls) == 1
+    assert len(set_mode_calls) == 1
+    assert len(turn_on_calls) == 0
+    assert len(turn_off_calls) == 1
+    assert len(toggle_calls) == 0
+
+    hass.bus.async_fire("test_event_turn_on")
+    await hass.async_block_till_done()
+    assert len(set_humidity_calls) == 1
+    assert len(set_mode_calls) == 1
+    assert len(turn_on_calls) == 1
+    assert len(turn_off_calls) == 1
+    assert len(toggle_calls) == 0
+
+    hass.bus.async_fire("test_event_toggle")
+    await hass.async_block_till_done()
+    assert len(set_humidity_calls) == 1
+    assert len(set_mode_calls) == 1
+    assert len(turn_on_calls) == 1
+    assert len(turn_off_calls) == 1
+    assert len(toggle_calls) == 1
+
+
+async def test_capabilities(hass):
+    """Test getting capabilities."""
+    # Test capabililities without state
+    capabilities = await device_action.async_get_action_capabilities(
+        hass,
+        {
+            "domain": DOMAIN,
+            "device_id": "abcdefgh",
+            "entity_id": "humidifier.entity",
+            "type": "set_mode",
+        },
+    )
+
+    assert capabilities and "extra_fields" in capabilities
+
+    assert voluptuous_serialize.convert(
+        capabilities["extra_fields"], custom_serializer=cv.custom_serializer
+    ) == [{"name": "mode", "options": [], "required": True, "type": "select"}]
+
+    # Set state
+    hass.states.async_set(
+        "humidifier.entity",
+        STATE_ON,
+        {const.ATTR_AVAILABLE_MODES: [const.MODE_HOME, const.MODE_AWAY]},
+    )
+
+    # Set humidity
+    capabilities = await device_action.async_get_action_capabilities(
+        hass,
+        {
+            "domain": DOMAIN,
+            "device_id": "abcdefgh",
+            "entity_id": "humidifier.entity",
+            "type": "set_humidity",
+        },
+    )
+
+    assert capabilities and "extra_fields" in capabilities
+
+    assert voluptuous_serialize.convert(
+        capabilities["extra_fields"], custom_serializer=cv.custom_serializer
+    ) == [{"name": "humidity", "required": True, "type": "integer"}]
+
+    # Set mode
+    capabilities = await device_action.async_get_action_capabilities(
+        hass,
+        {
+            "domain": DOMAIN,
+            "device_id": "abcdefgh",
+            "entity_id": "humidifier.entity",
+            "type": "set_mode",
+        },
+    )
+
+    assert capabilities and "extra_fields" in capabilities
+
+    assert voluptuous_serialize.convert(
+        capabilities["extra_fields"], custom_serializer=cv.custom_serializer
+    ) == [
+        {
+            "name": "mode",
+            "options": [("home", "home"), ("away", "away")],
+            "required": True,
+            "type": "select",
+        }
+    ]