diff --git a/homeassistant/components/amazon_devices/diagnostics.py b/homeassistant/components/amazon_devices/diagnostics.py
new file mode 100644
index 00000000000..e9a0773cd3f
--- /dev/null
+++ b/homeassistant/components/amazon_devices/diagnostics.py
@@ -0,0 +1,66 @@
+"""Diagnostics support for Amazon Devices integration."""
+
+from __future__ import annotations
+
+from typing import Any
+
+from aioamazondevices.api import AmazonDevice
+
+from homeassistant.components.diagnostics import async_redact_data
+from homeassistant.const import CONF_NAME, CONF_PASSWORD, CONF_USERNAME
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.device_registry import DeviceEntry
+
+from .coordinator import AmazonConfigEntry
+
+TO_REDACT = {CONF_PASSWORD, CONF_USERNAME, CONF_NAME, "title"}
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: AmazonConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a config entry."""
+
+    coordinator = entry.runtime_data
+
+    devices: list[dict[str, dict[str, Any]]] = [
+        build_device_data(device) for device in coordinator.data.values()
+    ]
+
+    return {
+        "entry": async_redact_data(entry.as_dict(), TO_REDACT),
+        "device_info": {
+            "last_update success": coordinator.last_update_success,
+            "last_exception": repr(coordinator.last_exception),
+            "devices": devices,
+        },
+    }
+
+
+async def async_get_device_diagnostics(
+    hass: HomeAssistant, entry: AmazonConfigEntry, device_entry: DeviceEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a device."""
+
+    coordinator = entry.runtime_data
+
+    assert device_entry.serial_number
+
+    return build_device_data(coordinator.data[device_entry.serial_number])
+
+
+def build_device_data(device: AmazonDevice) -> dict[str, Any]:
+    """Build device data for diagnostics."""
+    return {
+        "account name": device.account_name,
+        "capabilities": device.capabilities,
+        "device family": device.device_family,
+        "device type": device.device_type,
+        "device cluster members": device.device_cluster_members,
+        "online": device.online,
+        "serial number": device.serial_number,
+        "software version": device.software_version,
+        "do not disturb": device.do_not_disturb,
+        "response style": device.response_style,
+        "bluetooth state": device.bluetooth_state,
+    }
diff --git a/tests/components/amazon_devices/snapshots/test_diagnostics.ambr b/tests/components/amazon_devices/snapshots/test_diagnostics.ambr
new file mode 100644
index 00000000000..0b5164418aa
--- /dev/null
+++ b/tests/components/amazon_devices/snapshots/test_diagnostics.ambr
@@ -0,0 +1,74 @@
+# serializer version: 1
+# name: test_device_diagnostics
+  dict({
+    'account name': 'Echo Test',
+    'bluetooth state': True,
+    'capabilities': list([
+      'AUDIO_PLAYER',
+      'MICROPHONE',
+    ]),
+    'device cluster members': list([
+      'echo_test_serial_number',
+    ]),
+    'device family': 'mine',
+    'device type': 'echo',
+    'do not disturb': False,
+    'online': True,
+    'response style': None,
+    'serial number': 'echo_test_serial_number',
+    'software version': 'echo_test_software_version',
+  })
+# ---
+# name: test_entry_diagnostics
+  dict({
+    'device_info': dict({
+      'devices': list([
+        dict({
+          'account name': 'Echo Test',
+          'bluetooth state': True,
+          'capabilities': list([
+            'AUDIO_PLAYER',
+            'MICROPHONE',
+          ]),
+          'device cluster members': list([
+            'echo_test_serial_number',
+          ]),
+          'device family': 'mine',
+          'device type': 'echo',
+          'do not disturb': False,
+          'online': True,
+          'response style': None,
+          'serial number': 'echo_test_serial_number',
+          'software version': 'echo_test_software_version',
+        }),
+      ]),
+      'last_exception': 'None',
+      'last_update success': True,
+    }),
+    'entry': dict({
+      'data': dict({
+        'country': 'IT',
+        'login_data': dict({
+          'session': 'test-session',
+        }),
+        'password': '**REDACTED**',
+        'username': '**REDACTED**',
+      }),
+      'disabled_by': None,
+      'discovery_keys': dict({
+      }),
+      'domain': 'amazon_devices',
+      'minor_version': 1,
+      'options': dict({
+      }),
+      'pref_disable_new_entities': False,
+      'pref_disable_polling': False,
+      'source': 'user',
+      'subentries': list([
+      ]),
+      'title': '**REDACTED**',
+      'unique_id': 'fake_email@gmail.com',
+      'version': 1,
+    }),
+  })
+# ---
diff --git a/tests/components/amazon_devices/test_diagnostics.py b/tests/components/amazon_devices/test_diagnostics.py
new file mode 100644
index 00000000000..e548702650b
--- /dev/null
+++ b/tests/components/amazon_devices/test_diagnostics.py
@@ -0,0 +1,70 @@
+"""Tests for Amazon Devices diagnostics platform."""
+
+from __future__ import annotations
+
+from unittest.mock import AsyncMock
+
+from syrupy.assertion import SnapshotAssertion
+from syrupy.filters import props
+
+from homeassistant.components.amazon_devices.const import DOMAIN
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import device_registry as dr
+
+from . import setup_integration
+from .const import TEST_SERIAL_NUMBER
+
+from tests.common import MockConfigEntry
+from tests.components.diagnostics import (
+    get_diagnostics_for_config_entry,
+    get_diagnostics_for_device,
+)
+from tests.typing import ClientSessionGenerator
+
+
+async def test_entry_diagnostics(
+    hass: HomeAssistant,
+    mock_amazon_devices_client: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+    hass_client: ClientSessionGenerator,
+    snapshot: SnapshotAssertion,
+) -> None:
+    """Test Amazon config entry diagnostics."""
+    await setup_integration(hass, mock_config_entry)
+
+    assert await get_diagnostics_for_config_entry(
+        hass, hass_client, mock_config_entry
+    ) == snapshot(
+        exclude=props(
+            "entry_id",
+            "created_at",
+            "modified_at",
+        )
+    )
+
+
+async def test_device_diagnostics(
+    hass: HomeAssistant,
+    mock_amazon_devices_client: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+    hass_client: ClientSessionGenerator,
+    device_registry: dr.DeviceRegistry,
+    snapshot: SnapshotAssertion,
+) -> None:
+    """Test Amazon device diagnostics."""
+    await setup_integration(hass, mock_config_entry)
+
+    device = device_registry.async_get_device(
+        identifiers={(DOMAIN, TEST_SERIAL_NUMBER)}
+    )
+    assert device, repr(device_registry.devices)
+
+    assert await get_diagnostics_for_device(
+        hass, hass_client, mock_config_entry, device
+    ) == snapshot(
+        exclude=props(
+            "entry_id",
+            "created_at",
+            "modified_at",
+        )
+    )