diff --git a/homeassistant/components/onvif/config_flow.py b/homeassistant/components/onvif/config_flow.py
index d9cf28f3e8b..8637690a3ac 100644
--- a/homeassistant/components/onvif/config_flow.py
+++ b/homeassistant/components/onvif/config_flow.py
@@ -13,6 +13,7 @@ from wsdiscovery.service import Service
 from zeep.exceptions import Fault
 
 from homeassistant import config_entries
+from homeassistant.components import dhcp
 from homeassistant.components.ffmpeg import CONF_EXTRA_ARGUMENTS
 from homeassistant.components.stream import (
     CONF_RTSP_TRANSPORT,
@@ -27,6 +28,8 @@ from homeassistant.const import (
     CONF_USERNAME,
 )
 from homeassistant.core import HomeAssistant, callback
+from homeassistant.data_entry_flow import FlowResult
+from homeassistant.helpers import device_registry as dr
 
 from .const import CONF_DEVICE_ID, DEFAULT_ARGUMENTS, DEFAULT_PORT, DOMAIN, LOGGER
 from .device import get_device
@@ -101,6 +104,30 @@ class OnvifFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
             data_schema=vol.Schema({vol.Required("auto", default=True): bool}),
         )
 
+    async def async_step_dhcp(self, discovery_info: dhcp.DhcpServiceInfo) -> FlowResult:
+        """Handle dhcp discovery."""
+        hass = self.hass
+        mac = discovery_info.macaddress
+        registry = dr.async_get(self.hass)
+        if not (
+            device := registry.async_get_device(
+                identifiers=set(), connections={(dr.CONNECTION_NETWORK_MAC, mac)}
+            )
+        ):
+            return self.async_abort(reason="no_devices_found")
+        for entry_id in device.config_entries:
+            if (
+                not (entry := hass.config_entries.async_get_entry(entry_id))
+                or entry.domain != DOMAIN
+                or entry.state is config_entries.ConfigEntryState.LOADED
+            ):
+                continue
+            if hass.config_entries.async_update_entry(
+                entry, data=entry.data | {CONF_HOST: discovery_info.ip}
+            ):
+                hass.async_create_task(self.hass.config_entries.async_reload(entry_id))
+        return self.async_abort(reason="already_configured")
+
     async def async_step_device(self, user_input=None):
         """Handle WS-Discovery.
 
diff --git a/homeassistant/components/onvif/manifest.json b/homeassistant/components/onvif/manifest.json
index aa06d9c028d..10b7a845125 100644
--- a/homeassistant/components/onvif/manifest.json
+++ b/homeassistant/components/onvif/manifest.json
@@ -4,6 +4,7 @@
   "codeowners": ["@hunterjm"],
   "config_flow": true,
   "dependencies": ["ffmpeg"],
+  "dhcp": [{ "registered_devices": true }],
   "documentation": "https://www.home-assistant.io/integrations/onvif",
   "iot_class": "local_push",
   "loggers": ["onvif", "wsdiscovery", "zeep"],
diff --git a/homeassistant/components/onvif/strings.json b/homeassistant/components/onvif/strings.json
index 210027e96e5..348a50a1e4a 100644
--- a/homeassistant/components/onvif/strings.json
+++ b/homeassistant/components/onvif/strings.json
@@ -2,6 +2,7 @@
   "config": {
     "abort": {
       "already_configured": "[%key:common::config_flow::abort::already_configured_device%]",
+      "no_devices_found": "[%key:common::config_flow::abort::no_devices_found%]",
       "already_in_progress": "[%key:common::config_flow::abort::already_in_progress%]",
       "onvif_error": "Error setting up ONVIF device.  Check logs for more information.",
       "no_h264": "There were no H264 streams available.  Check the profile configuration on your device.",
diff --git a/homeassistant/generated/dhcp.py b/homeassistant/generated/dhcp.py
index 4a496b93d84..adcc32fe8d9 100644
--- a/homeassistant/generated/dhcp.py
+++ b/homeassistant/generated/dhcp.py
@@ -339,6 +339,10 @@ DHCP: list[dict[str, str | bool]] = [
         "hostname": "kohlergen*",
         "macaddress": "00146F*",
     },
+    {
+        "domain": "onvif",
+        "registered_devices": True,
+    },
     {
         "domain": "overkiz",
         "hostname": "gateway*",
diff --git a/tests/components/onvif/__init__.py b/tests/components/onvif/__init__.py
index d90ec02159f..ff4d88fb5b3 100644
--- a/tests/components/onvif/__init__.py
+++ b/tests/components/onvif/__init__.py
@@ -6,7 +6,13 @@ from zeep.exceptions import Fault
 from homeassistant import config_entries
 from homeassistant.components.onvif import config_flow
 from homeassistant.components.onvif.const import CONF_SNAPSHOT_AUTH
-from homeassistant.components.onvif.models import Capabilities, DeviceInfo, Profile
+from homeassistant.components.onvif.models import (
+    Capabilities,
+    DeviceInfo,
+    Profile,
+    Resolution,
+    Video,
+)
 from homeassistant.const import HTTP_DIGEST_AUTHENTICATION
 
 from tests.common import MockConfigEntry
@@ -100,7 +106,7 @@ def setup_mock_device(mock_device):
         index=0,
         token="dummy",
         name="profile1",
-        video=None,
+        video=Video("any", Resolution(640, 480)),
         ptz=None,
         video_source_token=None,
     )
@@ -120,7 +126,7 @@ async def setup_onvif_integration(
     unique_id=MAC,
     entry_id="1",
     source=config_entries.SOURCE_USER,
-):
+) -> tuple[MockConfigEntry, MagicMock, MagicMock]:
     """Create an ONVIF config entry."""
     if not config:
         config = {
diff --git a/tests/components/onvif/test_config_flow.py b/tests/components/onvif/test_config_flow.py
index 69631865880..f5e7143af84 100644
--- a/tests/components/onvif/test_config_flow.py
+++ b/tests/components/onvif/test_config_flow.py
@@ -2,8 +2,13 @@
 from unittest.mock import MagicMock, patch
 
 from homeassistant import config_entries, data_entry_flow
-from homeassistant.components.onvif import config_flow
+from homeassistant.components import dhcp
+from homeassistant.components.onvif import DOMAIN, config_flow
+from homeassistant.config_entries import SOURCE_DHCP
+from homeassistant.const import CONF_HOST
 from homeassistant.core import HomeAssistant
+from homeassistant.data_entry_flow import FlowResultType
+from homeassistant.helpers import device_registry as dr
 
 from . import (
     HOST,
@@ -34,6 +39,16 @@ DISCOVERY = [
         "MAC": "ee:dd:cc:bb:aa",
     },
 ]
+DHCP_DISCOVERY = dhcp.DhcpServiceInfo(
+    hostname="any",
+    ip="5.6.7.8",
+    macaddress=MAC,
+)
+DHCP_DISCOVERY_SAME_IP = dhcp.DhcpServiceInfo(
+    hostname="any",
+    ip="1.2.3.4",
+    macaddress=MAC,
+)
 
 
 def setup_mock_discovery(
@@ -339,3 +354,88 @@ async def test_option_flow(hass: HomeAssistant) -> None:
         config_flow.CONF_RTSP_TRANSPORT: list(config_flow.RTSP_TRANSPORTS)[1],
         config_flow.CONF_USE_WALLCLOCK_AS_TIMESTAMPS: True,
     }
+
+
+async def test_discovered_by_dhcp_updates_host(hass: HomeAssistant) -> None:
+    """Test dhcp updates existing host."""
+    config_entry, _camera, device = await setup_onvif_integration(hass)
+    device.profiles = device.async_get_profiles()
+    registry = dr.async_get(hass)
+    devices = dr.async_entries_for_config_entry(registry, config_entry.entry_id)
+    assert len(devices) == 1
+    device = devices[0]
+    assert device.model == "TestModel"
+    assert device.connections == {(dr.CONNECTION_NETWORK_MAC, MAC)}
+    assert config_entry.data[CONF_HOST] == "1.2.3.4"
+    await hass.config_entries.async_unload(config_entry.entry_id)
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": SOURCE_DHCP}, data=DHCP_DISCOVERY
+    )
+    await hass.async_block_till_done()
+
+    assert result["type"] == FlowResultType.ABORT
+    assert result["reason"] == "already_configured"
+    assert config_entry.data[CONF_HOST] == DHCP_DISCOVERY.ip
+
+
+async def test_discovered_by_dhcp_does_nothing_if_host_is_the_same(
+    hass: HomeAssistant,
+) -> None:
+    """Test dhcp update does nothing if host is the same."""
+    config_entry, _camera, device = await setup_onvif_integration(hass)
+    device.profiles = device.async_get_profiles()
+    registry = dr.async_get(hass)
+    devices = dr.async_entries_for_config_entry(registry, config_entry.entry_id)
+    assert len(devices) == 1
+    device = devices[0]
+    assert device.model == "TestModel"
+    assert device.connections == {(dr.CONNECTION_NETWORK_MAC, MAC)}
+    assert config_entry.data[CONF_HOST] == DHCP_DISCOVERY_SAME_IP.ip
+    await hass.config_entries.async_unload(config_entry.entry_id)
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": SOURCE_DHCP}, data=DHCP_DISCOVERY_SAME_IP
+    )
+    await hass.async_block_till_done()
+
+    assert result["type"] == FlowResultType.ABORT
+    assert result["reason"] == "already_configured"
+    assert config_entry.data[CONF_HOST] == DHCP_DISCOVERY_SAME_IP.ip
+
+
+async def test_discovered_by_dhcp_does_not_update_if_already_loaded(
+    hass: HomeAssistant,
+) -> None:
+    """Test dhcp does not update existing host if its already loaded."""
+    config_entry, _camera, device = await setup_onvif_integration(hass)
+    device.profiles = device.async_get_profiles()
+    registry = dr.async_get(hass)
+    devices = dr.async_entries_for_config_entry(registry, config_entry.entry_id)
+    assert len(devices) == 1
+    device = devices[0]
+    assert device.model == "TestModel"
+    assert device.connections == {(dr.CONNECTION_NETWORK_MAC, MAC)}
+    assert config_entry.data[CONF_HOST] == "1.2.3.4"
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": SOURCE_DHCP}, data=DHCP_DISCOVERY
+    )
+    await hass.async_block_till_done()
+
+    assert result["type"] == FlowResultType.ABORT
+    assert result["reason"] == "already_configured"
+    assert config_entry.data[CONF_HOST] != DHCP_DISCOVERY.ip
+
+
+async def test_discovered_by_dhcp_does_not_update_if_no_matching_entry(
+    hass: HomeAssistant,
+) -> None:
+    """Test dhcp does not update existing host if there are no matching entries."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": SOURCE_DHCP}, data=DHCP_DISCOVERY
+    )
+    await hass.async_block_till_done()
+
+    assert result["type"] == FlowResultType.ABORT
+    assert result["reason"] == "no_devices_found"
diff --git a/tests/components/onvif/test_diagnostics.py b/tests/components/onvif/test_diagnostics.py
index 6a81f14fe5b..66404d60e1b 100644
--- a/tests/components/onvif/test_diagnostics.py
+++ b/tests/components/onvif/test_diagnostics.py
@@ -63,7 +63,10 @@ async def test_diagnostics(
                     "index": 0,
                     "token": "dummy",
                     "name": "profile1",
-                    "video": None,
+                    "video": {
+                        "encoding": "any",
+                        "resolution": {"width": 640, "height": 480},
+                    },
                     "ptz": None,
                     "video_source_token": None,
                 }