diff --git a/homeassistant/components/sonos/speaker.py b/homeassistant/components/sonos/speaker.py
index 5d4199ec905..bd217cc9029 100644
--- a/homeassistant/components/sonos/speaker.py
+++ b/homeassistant/components/sonos/speaker.py
@@ -137,6 +137,7 @@ class SonosSpeaker:
         self.cross_fade: bool | None = None
         self.bass: int | None = None
         self.treble: int | None = None
+        self.loudness: bool | None = None
 
         # Home theater
         self.audio_delay: int | None = None
@@ -506,6 +507,9 @@ class SonosSpeaker:
         if "mute" in variables:
             self.muted = variables["mute"]["Master"] == "1"
 
+        if loudness := variables.get("loudness"):
+            self.loudness = loudness["Master"] == "1"
+
         for bool_var in (
             "dialog_level",
             "night_mode",
diff --git a/homeassistant/components/sonos/switch.py b/homeassistant/components/sonos/switch.py
index b5fea08e418..29abb097df7 100644
--- a/homeassistant/components/sonos/switch.py
+++ b/homeassistant/components/sonos/switch.py
@@ -38,6 +38,7 @@ ATTR_VOLUME = "volume"
 ATTR_INCLUDE_LINKED_ZONES = "include_linked_zones"
 
 ATTR_CROSSFADE = "cross_fade"
+ATTR_LOUDNESS = "loudness"
 ATTR_NIGHT_SOUND = "night_mode"
 ATTR_SPEECH_ENHANCEMENT = "dialog_level"
 ATTR_STATUS_LIGHT = "status_light"
@@ -48,6 +49,7 @@ ATTR_TOUCH_CONTROLS = "buttons_enabled"
 ALL_FEATURES = (
     ATTR_TOUCH_CONTROLS,
     ATTR_CROSSFADE,
+    ATTR_LOUDNESS,
     ATTR_NIGHT_SOUND,
     ATTR_SPEECH_ENHANCEMENT,
     ATTR_SUB_ENABLED,
@@ -64,6 +66,7 @@ POLL_REQUIRED = (
 
 FRIENDLY_NAMES = {
     ATTR_CROSSFADE: "Crossfade",
+    ATTR_LOUDNESS: "Loudness",
     ATTR_NIGHT_SOUND: "Night Sound",
     ATTR_SPEECH_ENHANCEMENT: "Speech Enhancement",
     ATTR_STATUS_LIGHT: "Status Light",
@@ -73,6 +76,7 @@ FRIENDLY_NAMES = {
 }
 
 FEATURE_ICONS = {
+    ATTR_LOUDNESS: "mdi:bullhorn-variant",
     ATTR_NIGHT_SOUND: "mdi:chat-sleep",
     ATTR_SPEECH_ENHANCEMENT: "mdi:ear-hearing",
     ATTR_CROSSFADE: "mdi:swap-horizontal",
diff --git a/tests/components/sonos/conftest.py b/tests/components/sonos/conftest.py
index 8c804f466d4..d493c9d50c9 100644
--- a/tests/components/sonos/conftest.py
+++ b/tests/components/sonos/conftest.py
@@ -108,6 +108,7 @@ def soco_fixture(
         mock_soco.mute = False
         mock_soco.night_mode = True
         mock_soco.dialog_level = True
+        mock_soco.loudness = True
         mock_soco.volume = 19
         mock_soco.audio_delay = 2
         mock_soco.bass = 1
diff --git a/tests/components/sonos/test_switch.py b/tests/components/sonos/test_switch.py
index 586ccf213b8..f224a1e187e 100644
--- a/tests/components/sonos/test_switch.py
+++ b/tests/components/sonos/test_switch.py
@@ -29,6 +29,7 @@ async def test_entity_registry(hass, async_autosetup_sonos):
     assert "media_player.zone_a" in entity_registry.entities
     assert "switch.sonos_alarm_14" in entity_registry.entities
     assert "switch.zone_a_status_light" in entity_registry.entities
+    assert "switch.zone_a_loudness" in entity_registry.entities
     assert "switch.zone_a_night_sound" in entity_registry.entities
     assert "switch.zone_a_speech_enhancement" in entity_registry.entities
     assert "switch.zone_a_subwoofer_enabled" in entity_registry.entities
@@ -55,6 +56,10 @@ async def test_switch_attributes(hass, async_autosetup_sonos, soco):
     night_sound_state = hass.states.get(night_sound.entity_id)
     assert night_sound_state.state == STATE_ON
 
+    loudness = entity_registry.entities["switch.zone_a_loudness"]
+    loudness_state = hass.states.get(loudness.entity_id)
+    assert loudness_state.state == STATE_ON
+
     speech_enhancement = entity_registry.entities["switch.zone_a_speech_enhancement"]
     speech_enhancement_state = hass.states.get(speech_enhancement.entity_id)
     assert speech_enhancement_state.state == STATE_ON