diff --git a/homeassistant/components/opengarage/__init__.py b/homeassistant/components/opengarage/__init__.py
index c269ee53cf3..b825cace83a 100644
--- a/homeassistant/components/opengarage/__init__.py
+++ b/homeassistant/components/opengarage/__init__.py
@@ -18,13 +18,11 @@ from .const import CONF_DEVICE_KEY, DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = [Platform.BINARY_SENSOR, Platform.COVER, Platform.SENSOR]
+PLATFORMS = [Platform.BINARY_SENSOR, Platform.BUTTON, Platform.COVER, Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up OpenGarage from a config entry."""
-    hass.data.setdefault(DOMAIN, {})
-
     open_garage_connection = opengarage.OpenGarage(
         f"{entry.data[CONF_HOST]}:{entry.data[CONF_PORT]}",
         entry.data[CONF_DEVICE_KEY],
@@ -36,7 +34,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         open_garage_connection=open_garage_connection,
     )
     await open_garage_data_coordinator.async_config_entry_first_refresh()
-    hass.data[DOMAIN][entry.entry_id] = open_garage_data_coordinator
+    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = open_garage_data_coordinator
 
     await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
 
diff --git a/homeassistant/components/opengarage/button.py b/homeassistant/components/opengarage/button.py
new file mode 100644
index 00000000000..9f676919098
--- /dev/null
+++ b/homeassistant/components/opengarage/button.py
@@ -0,0 +1,79 @@
+"""OpenGarage button."""
+from __future__ import annotations
+
+from collections.abc import Callable
+from dataclasses import dataclass
+from typing import Any, cast
+
+from opengarage import OpenGarage
+
+from homeassistant.components.button import (
+    ButtonDeviceClass,
+    ButtonEntity,
+    ButtonEntityDescription,
+)
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import EntityCategory
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from . import OpenGarageDataUpdateCoordinator
+from .const import DOMAIN
+from .entity import OpenGarageEntity
+
+
+@dataclass(frozen=True, kw_only=True)
+class OpenGarageButtonEntityDescription(ButtonEntityDescription):
+    """OpenGarage Browser button description."""
+
+    press_action: Callable[[OpenGarage], Any]
+
+
+BUTTONS: tuple[OpenGarageButtonEntityDescription, ...] = (
+    OpenGarageButtonEntityDescription(
+        key="restart",
+        device_class=ButtonDeviceClass.RESTART,
+        entity_category=EntityCategory.CONFIG,
+        press_action=lambda opengarage: opengarage.reboot(),
+    ),
+)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up the OpenGarage button entities."""
+    coordinator: OpenGarageDataUpdateCoordinator = hass.data[DOMAIN][
+        config_entry.entry_id
+    ]
+
+    async_add_entities(
+        OpenGarageButtonEntity(
+            coordinator, cast(str, config_entry.unique_id), description
+        )
+        for description in BUTTONS
+    )
+
+
+class OpenGarageButtonEntity(OpenGarageEntity, ButtonEntity):
+    """Representation of an OpenGarage button."""
+
+    entity_description: OpenGarageButtonEntityDescription
+
+    def __init__(
+        self,
+        coordinator: OpenGarageDataUpdateCoordinator,
+        device_id: str,
+        description: OpenGarageButtonEntityDescription,
+    ) -> None:
+        """Initialize the button."""
+        super().__init__(coordinator, device_id, description)
+
+    async def async_press(self) -> None:
+        """Press the button."""
+        await self.entity_description.press_action(
+            self.coordinator.open_garage_connection
+        )
+        await self.coordinator.async_refresh()
diff --git a/tests/components/opengarage/conftest.py b/tests/components/opengarage/conftest.py
new file mode 100644
index 00000000000..189c3a877ff
--- /dev/null
+++ b/tests/components/opengarage/conftest.py
@@ -0,0 +1,59 @@
+"""Fixtures for the OpenGarage integration tests."""
+from __future__ import annotations
+
+from collections.abc import Generator
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+from homeassistant.components.opengarage.const import CONF_DEVICE_KEY, DOMAIN
+from homeassistant.const import CONF_HOST, CONF_PORT, CONF_VERIFY_SSL
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+
+@pytest.fixture
+def mock_config_entry() -> MockConfigEntry:
+    """Return the default mocked config entry."""
+    return MockConfigEntry(
+        title="Test device",
+        domain=DOMAIN,
+        data={
+            CONF_HOST: "http://1.1.1.1",
+            CONF_PORT: "80",
+            CONF_DEVICE_KEY: "abc123",
+            CONF_VERIFY_SSL: False,
+        },
+        unique_id="12345",
+    )
+
+
+@pytest.fixture
+def mock_opengarage() -> Generator[MagicMock, None, None]:
+    """Return a mocked OpenGarage client."""
+    with patch(
+        "homeassistant.components.opengarage.opengarage.OpenGarage",
+        autospec=True,
+    ) as client_mock:
+        client = client_mock.return_value
+        client.device_url = "http://1.1.1.1:80"
+        client.update_state.return_value = {
+            "name": "abcdef",
+            "mac": "aa:bb:cc:dd:ee:ff",
+            "fwv": "1.2.0",
+        }
+        yield client
+
+
+@pytest.fixture
+async def init_integration(
+    hass: HomeAssistant, mock_config_entry: MockConfigEntry, mock_opengarage: MagicMock
+) -> MockConfigEntry:
+    """Set up the OpenGarage integration for testing."""
+    mock_config_entry.add_to_hass(hass)
+
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    return mock_config_entry
diff --git a/tests/components/opengarage/test_button.py b/tests/components/opengarage/test_button.py
new file mode 100644
index 00000000000..b4557a116e8
--- /dev/null
+++ b/tests/components/opengarage/test_button.py
@@ -0,0 +1,33 @@
+"""Test the OpenGarage Browser buttons."""
+from unittest.mock import MagicMock
+
+import homeassistant.components.button as button
+from homeassistant.const import ATTR_ENTITY_ID
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import device_registry as dr, entity_registry as er
+
+from tests.common import MockConfigEntry
+
+
+async def test_buttons(
+    hass: HomeAssistant,
+    mock_opengarage: MagicMock,
+    init_integration: MockConfigEntry,
+    entity_registry: er.EntityRegistry,
+    device_registry: dr.DeviceRegistry,
+) -> None:
+    """Test standard OpenGarage buttons."""
+    entry = entity_registry.async_get("button.abcdef_restart")
+    assert entry
+    assert entry.unique_id == "12345_restart"
+    await hass.services.async_call(
+        button.DOMAIN,
+        button.SERVICE_PRESS,
+        {ATTR_ENTITY_ID: "button.abcdef_restart"},
+        blocking=True,
+    )
+    assert len(mock_opengarage.reboot.mock_calls) == 1
+
+    assert entry.device_id
+    device_entry = device_registry.async_get(entry.device_id)
+    assert device_entry