diff --git a/homeassistant/auth/providers/__init__.py b/homeassistant/auth/providers/__init__.py
index b60fa8eff9c..1fe59346b00 100644
--- a/homeassistant/auth/providers/__init__.py
+++ b/homeassistant/auth/providers/__init__.py
@@ -207,7 +207,7 @@ class LoginFlow(data_entry_flow.FlowHandler):
             errors["base"] = "invalid_auth_module"
 
         if len(self.available_mfa_modules) == 1:
-            self._auth_module_id = list(self.available_mfa_modules.keys())[0]
+            self._auth_module_id = list(self.available_mfa_modules)[0]
             return await self.async_step_mfa()
 
         return self.async_show_form(
diff --git a/homeassistant/components/asuswrt/device_tracker.py b/homeassistant/components/asuswrt/device_tracker.py
index a7c4f9a7a7c..a3545183d2e 100644
--- a/homeassistant/components/asuswrt/device_tracker.py
+++ b/homeassistant/components/asuswrt/device_tracker.py
@@ -35,7 +35,7 @@ class AsusWrtDeviceScanner(DeviceScanner):
     async def async_scan_devices(self):
         """Scan for new devices and return a list with found device IDs."""
         await self.async_update_info()
-        return list(self.last_results.keys())
+        return list(self.last_results)
 
     async def async_get_device_name(self, device):
         """Return the name of the given device or None if we don't know."""
diff --git a/homeassistant/components/blink/alarm_control_panel.py b/homeassistant/components/blink/alarm_control_panel.py
index 1ca4c4beac9..dbcb6d30143 100644
--- a/homeassistant/components/blink/alarm_control_panel.py
+++ b/homeassistant/components/blink/alarm_control_panel.py
@@ -66,7 +66,7 @@ class BlinkSyncModule(AlarmControlPanelEntity):
         """Return the state attributes."""
         attr = self.sync.attributes
         attr["network_info"] = self.data.networks
-        attr["associated_cameras"] = list(self.sync.cameras.keys())
+        attr["associated_cameras"] = list(self.sync.cameras)
         attr[ATTR_ATTRIBUTION] = DEFAULT_ATTRIBUTION
         return attr
 
diff --git a/homeassistant/components/denon/media_player.py b/homeassistant/components/denon/media_player.py
index ed90c2ddcb0..b909dc7c070 100644
--- a/homeassistant/components/denon/media_player.py
+++ b/homeassistant/components/denon/media_player.py
@@ -230,7 +230,7 @@ class DenonDevice(MediaPlayerEntity):
     @property
     def source_list(self):
         """Return the list of available input sources."""
-        return sorted(list(self._source_list.keys()))
+        return sorted(list(self._source_list))
 
     @property
     def media_title(self):
diff --git a/homeassistant/components/environment_canada/sensor.py b/homeassistant/components/environment_canada/sensor.py
index afd75956a9f..a8772909f68 100644
--- a/homeassistant/components/environment_canada/sensor.py
+++ b/homeassistant/components/environment_canada/sensor.py
@@ -61,7 +61,7 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
         lon = config.get(CONF_LONGITUDE, hass.config.longitude)
         ec_data = ECData(coordinates=(lat, lon), language=config.get(CONF_LANGUAGE))
 
-    sensor_list = list(ec_data.conditions.keys()) + list(ec_data.alerts.keys())
+    sensor_list = list(ec_data.conditions) + list(ec_data.alerts)
     add_entities([ECSensor(sensor_type, ec_data) for sensor_type in sensor_list], True)
 
 
diff --git a/homeassistant/components/eq3btsmart/climate.py b/homeassistant/components/eq3btsmart/climate.py
index 6eb0276c314..737b3fe357a 100644
--- a/homeassistant/components/eq3btsmart/climate.py
+++ b/homeassistant/components/eq3btsmart/climate.py
@@ -136,7 +136,7 @@ class EQ3BTSmartThermostat(ClimateEntity):
     @property
     def hvac_modes(self):
         """Return the list of available operation modes."""
-        return list(HA_TO_EQ_HVAC.keys())
+        return list(HA_TO_EQ_HVAC)
 
     def set_hvac_mode(self, hvac_mode):
         """Set operation mode."""
@@ -181,7 +181,7 @@ class EQ3BTSmartThermostat(ClimateEntity):
 
         Requires SUPPORT_PRESET_MODE.
         """
-        return list(HA_TO_EQ_PRESET.keys())
+        return list(HA_TO_EQ_PRESET)
 
     def set_preset_mode(self, preset_mode):
         """Set new preset mode."""
diff --git a/homeassistant/components/homekit/util.py b/homeassistant/components/homekit/util.py
index 2ea4fcb551b..453ae13d846 100644
--- a/homeassistant/components/homekit/util.py
+++ b/homeassistant/components/homekit/util.py
@@ -357,7 +357,7 @@ class HomeKitSpeedMapping:
         for state, speed_range in reversed(self.speed_ranges.items()):
             if speed_range.start <= speed:
                 return state
-        return list(self.speed_ranges.keys())[0]
+        return list(self.speed_ranges)[0]
 
 
 def show_setup_message(hass, entry_id, bridge_name, pincode, uri):
diff --git a/homeassistant/components/insteon/climate.py b/homeassistant/components/insteon/climate.py
index f05cf9d2940..7d4d9543c3f 100644
--- a/homeassistant/components/insteon/climate.py
+++ b/homeassistant/components/insteon/climate.py
@@ -202,12 +202,12 @@ class InsteonClimateEntity(InsteonEntity, ClimateEntity):
 
     async def async_set_fan_mode(self, fan_mode: str) -> None:
         """Set new target fan mode."""
-        mode = list(FAN_MODES.keys())[list(FAN_MODES.values()).index(fan_mode)]
+        mode = list(FAN_MODES)[list(FAN_MODES.values()).index(fan_mode)]
         await self._insteon_device.async_set_mode(mode)
 
     async def async_set_hvac_mode(self, hvac_mode: str) -> None:
         """Set new target hvac mode."""
-        mode = list(HVAC_MODES.keys())[list(HVAC_MODES.values()).index(hvac_mode)]
+        mode = list(HVAC_MODES)[list(HVAC_MODES.values()).index(hvac_mode)]
         await self._insteon_device.async_set_mode(mode)
 
     async def async_set_humidity(self, humidity):
diff --git a/homeassistant/components/izone/climate.py b/homeassistant/components/izone/climate.py
index cd14d1cadcf..443a80298f1 100644
--- a/homeassistant/components/izone/climate.py
+++ b/homeassistant/components/izone/climate.py
@@ -509,7 +509,7 @@ class ZoneDevice(ClimateEntity):
     @property
     def hvac_modes(self):
         """Return the list of available operation modes."""
-        return list(self._state_to_pizone.keys())
+        return list(self._state_to_pizone)
 
     @property
     def current_temperature(self):
diff --git a/homeassistant/components/mqtt/discovery.py b/homeassistant/components/mqtt/discovery.py
index 7a478733826..7f9a6730285 100644
--- a/homeassistant/components/mqtt/discovery.py
+++ b/homeassistant/components/mqtt/discovery.py
@@ -102,14 +102,14 @@ async def async_start(
 
         payload = MQTTConfig(payload)
 
-        for key in list(payload.keys()):
+        for key in list(payload):
             abbreviated_key = key
             key = ABBREVIATIONS.get(key, key)
             payload[key] = payload.pop(abbreviated_key)
 
         if CONF_DEVICE in payload:
             device = payload[CONF_DEVICE]
-            for key in list(device.keys()):
+            for key in list(device):
                 abbreviated_key = key
                 key = DEVICE_ABBREVIATIONS.get(key, key)
                 device[key] = device.pop(abbreviated_key)
diff --git a/homeassistant/components/nad/media_player.py b/homeassistant/components/nad/media_player.py
index 7d8537db6c6..782b8735e3a 100644
--- a/homeassistant/components/nad/media_player.py
+++ b/homeassistant/components/nad/media_player.py
@@ -163,7 +163,7 @@ class NAD(MediaPlayerEntity):
     @property
     def source_list(self):
         """List of available input sources."""
-        return sorted(list(self._reverse_mapping.keys()))
+        return sorted(list(self._reverse_mapping))
 
     @property
     def available(self):
diff --git a/homeassistant/components/pioneer/media_player.py b/homeassistant/components/pioneer/media_player.py
index a04b79e3188..e573bf0929c 100644
--- a/homeassistant/components/pioneer/media_player.py
+++ b/homeassistant/components/pioneer/media_player.py
@@ -203,7 +203,7 @@ class PioneerDevice(MediaPlayerEntity):
     @property
     def source_list(self):
         """List of available input sources."""
-        return list(self._source_name_to_number.keys())
+        return list(self._source_name_to_number)
 
     @property
     def media_title(self):
diff --git a/homeassistant/components/qnap/sensor.py b/homeassistant/components/qnap/sensor.py
index fe4003a9423..11faba0f210 100644
--- a/homeassistant/components/qnap/sensor.py
+++ b/homeassistant/components/qnap/sensor.py
@@ -85,12 +85,12 @@ _VOLUME_MON_COND = {
 }
 
 _MONITORED_CONDITIONS = (
-    list(_SYSTEM_MON_COND.keys())
-    + list(_CPU_MON_COND.keys())
-    + list(_MEMORY_MON_COND.keys())
-    + list(_NETWORK_MON_COND.keys())
-    + list(_DRIVE_MON_COND.keys())
-    + list(_VOLUME_MON_COND.keys())
+    list(_SYSTEM_MON_COND)
+    + list(_CPU_MON_COND)
+    + list(_MEMORY_MON_COND)
+    + list(_NETWORK_MON_COND)
+    + list(_DRIVE_MON_COND)
+    + list(_VOLUME_MON_COND)
 )
 
 PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
diff --git a/homeassistant/components/sma/sensor.py b/homeassistant/components/sma/sensor.py
index ce61d4ff17b..119d9a366d6 100644
--- a/homeassistant/components/sma/sensor.py
+++ b/homeassistant/components/sma/sensor.py
@@ -40,7 +40,7 @@ def _check_sensor_schema(conf):
     except (ImportError, AttributeError):
         return conf
 
-    customs = list(conf[CONF_CUSTOM].keys())
+    customs = list(conf[CONF_CUSTOM])
 
     for sensor in conf[CONF_SENSORS]:
         if sensor in customs:
@@ -120,7 +120,7 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
     if isinstance(config_sensors, list):
         if not config_sensors:  # Use all sensors by default
             config_sensors = [s.name for s in sensor_def]
-        used_sensors = list(set(config_sensors + list(config[CONF_CUSTOM].keys())))
+        used_sensors = list(set(config_sensors + list(config[CONF_CUSTOM])))
         for sensor in used_sensors:
             hass_sensors.append(SMAsensor(sensor_def[sensor], []))
 
diff --git a/homeassistant/components/upnp/sensor.py b/homeassistant/components/upnp/sensor.py
index 80a5ce7021c..a9906e535b9 100644
--- a/homeassistant/components/upnp/sensor.py
+++ b/homeassistant/components/upnp/sensor.py
@@ -88,7 +88,7 @@ async def async_setup_entry(
         udn = data[CONFIG_ENTRY_UDN]
     else:
         # any device will do
-        udn = list(hass.data[DOMAIN][DOMAIN_DEVICES].keys())[0]
+        udn = list(hass.data[DOMAIN][DOMAIN_DEVICES])[0]
 
     device: Device = hass.data[DOMAIN][DOMAIN_DEVICES][udn]
 
diff --git a/homeassistant/components/webostv/media_player.py b/homeassistant/components/webostv/media_player.py
index 82950e4f7f8..4807d780a48 100644
--- a/homeassistant/components/webostv/media_player.py
+++ b/homeassistant/components/webostv/media_player.py
@@ -271,7 +271,7 @@ class LgWebOSMediaPlayerEntity(MediaPlayerEntity):
     @property
     def source_list(self):
         """List of available input sources."""
-        return sorted(self._source_list.keys())
+        return sorted(list(self._source_list))
 
     @property
     def media_content_type(self):
diff --git a/homeassistant/components/yeelight/light.py b/homeassistant/components/yeelight/light.py
index 06cf91faf27..90704a6edfb 100644
--- a/homeassistant/components/yeelight/light.py
+++ b/homeassistant/components/yeelight/light.py
@@ -471,7 +471,7 @@ class YeelightGenericLight(YeelightEntity, LightEntity):
     @property
     def custom_effects_names(self):
         """Return list with custom effects names."""
-        return list(self.custom_effects.keys())
+        return list(self.custom_effects)
 
     @property
     def light_type(self):
diff --git a/homeassistant/helpers/config_entry_oauth2_flow.py b/homeassistant/helpers/config_entry_oauth2_flow.py
index ba43a057ca3..4d05ad7beab 100644
--- a/homeassistant/helpers/config_entry_oauth2_flow.py
+++ b/homeassistant/helpers/config_entry_oauth2_flow.py
@@ -233,7 +233,7 @@ class AbstractOAuth2FlowHandler(config_entries.ConfigFlow, metaclass=ABCMeta):
             data_schema=vol.Schema(
                 {
                     vol.Required(
-                        "implementation", default=list(implementations.keys())[0]
+                        "implementation", default=list(implementations)[0]
                     ): vol.In({key: impl.name for key, impl in implementations.items()})
                 }
             ),