diff --git a/src/app/components/CallEmbedProvider.tsx b/src/app/components/CallEmbedProvider.tsx
index 49362b1de..0ba27e4da 100644
--- a/src/app/components/CallEmbedProvider.tsx
+++ b/src/app/components/CallEmbedProvider.tsx
@@ -48,6 +48,7 @@ import { useCallMembersChange, useCallSession } from '../hooks/useCall';
 import { useCallJoinLeaveSounds } from '../hooks/useCallJoinLeaveSounds';
 import { useCallPolicyRevokedToast } from '../hooks/useCallPolicyRevokedToast';
 import { useCallAnnouncements } from '../hooks/useCallAnnouncements';
+import { useMutedTalkWarning } from '../hooks/useMutedTalkWarning';
 import { callAnnouncementAtom } from '../state/callAnnouncement';
 import { SrOnly } from '../features/call-status/styles.css';
 import { useCallHotkeys } from '../hooks/useCallHotkeys';
@@ -744,6 +745,7 @@ function CallUtils({ embed, joined }: { embed: CallEmbed; joined: boolean }) {
   useCallJoinLeaveSounds(embed);
   useCallPolicyRevokedToast(embed, joined);
   useCallAnnouncements(embed, joined);
+  useMutedTalkWarning(embed, joined);
   useCallThemeSync(embed);
   useCallQuality(embed);
   useCallHangupEvent(
diff --git a/src/app/features/settings/general/General.tsx b/src/app/features/settings/general/General.tsx
index b26c73c1f..30208416f 100644
--- a/src/app/features/settings/general/General.tsx
+++ b/src/app/features/settings/general/General.tsx
@@ -1648,6 +1648,7 @@ function Calls() {
   const [deafenHotkey, setDeafenHotkey] = useSetting(settingsAtom, 'deafenHotkey');
   const [globalCallHotkeys, setGlobalCallHotkeys] = useSetting(settingsAtom, 'globalCallHotkeys');
   const [afkAutoMute, setAfkAutoMute] = useSetting(settingsAtom, 'afkAutoMute');
+  const [mutedTalkWarning, setMutedTalkWarning] = useSetting(settingsAtom, 'mutedTalkWarning');
   const [afkTimeoutMinutes, setAfkTimeoutMinutes] = useSetting(settingsAtom, 'afkTimeoutMinutes');
   const [callJoinLeaveSound, setCallJoinLeaveSound] = useSetting(
     settingsAtom,
@@ -2012,6 +2013,13 @@ function Calls() {
         direction="Column"
         gap="400"
       >
+        <SettingTile
+          title="Warn me when I talk while muted"
+          description="Shows a one-time 'You're muted' nudge with an Unmute button when the mic hears you but is muted. Never while Push to Talk is on."
+          after={
+            <Switch variant="Primary" value={mutedTalkWarning} onChange={setMutedTalkWarning} />
+          }
+        />
         <SettingTile
           title="AFK Auto-Mute"
           description="Automatically mute your microphone when you have been silent in a call."
diff --git a/src/app/hooks/useMutedTalkWarning.ts b/src/app/hooks/useMutedTalkWarning.ts
new file mode 100644
index 000000000..43ed5bd41
--- /dev/null
+++ b/src/app/hooks/useMutedTalkWarning.ts
@@ -0,0 +1,70 @@
+import { useEffect, useRef } from 'react';
+import { useSetAtom } from 'jotai';
+import { CallEmbed, useCallControlState } from '../plugins/call';
+import { useSetting } from '../state/hooks/settings';
+import { settingsAtom } from '../state/settings';
+import { dismissToastAtom, toastQueueAtom } from '../state/toast';
+import { useMatrixClient } from './useMatrixClient';
+
+const HOLD_MS = 1500;
+const CHECK_MS = 250;
+
+/**
+ * [Gitea #117] "You're muted" — the fork reports `speakingWhileMuted` for the
+ * local participant in io.lotus.call_state (a level tap on the muted track;
+ * cinny captures no audio). Once it has been true for ≥ 1.5 s, one sticky
+ * toast with an Unmute action, at most once per mute session (re-arms after
+ * unmute → mute). Never in Push-to-Talk mode — being muted between holds is
+ * the point.
+ */
+export function useMutedTalkWarning(embed: CallEmbed | undefined, joined: boolean): void {
+  const mx = useMatrixClient();
+  const [enabled] = useSetting(settingsAtom, 'mutedTalkWarning');
+  const [pttMode] = useSetting(settingsAtom, 'pttMode');
+  const { microphone } = useCallControlState(embed?.control);
+  const setToast = useSetAtom(toastQueueAtom);
+  const dismissToast = useSetAtom(dismissToastAtom);
+  const warnedThisMute = useRef(false);
+  const toastIdRef = useRef<string | null>(null);
+
+  // Unmuting (by any means) re-arms the warning and retires the toast.
+  useEffect(() => {
+    if (!microphone) return;
+    warnedThisMute.current = false;
+    if (toastIdRef.current) {
+      dismissToast(toastIdRef.current);
+      toastIdRef.current = null;
+    }
+  }, [microphone, dismissToast]);
+
+  useEffect(() => {
+    if (!embed || !joined || !enabled || pttMode || microphone) return undefined;
+    const me = mx.getSafeUserId();
+    let since: number | null = null;
+    const id = window.setInterval(() => {
+      if (warnedThisMute.current) return;
+      const local = embed.getLotusParticipants()?.find((p) => p.userId === me);
+      if (!local?.speakingWhileMuted) {
+        since = null;
+        return;
+      }
+      if (since === null) since = Date.now();
+      if (Date.now() - since < HOLD_MS) return;
+      warnedThisMute.current = true;
+      const toastId = `muted-talk-${Date.now()}`;
+      toastIdRef.current = toastId;
+      setToast({
+        id: toastId,
+        displayName: 'Lotus Chat',
+        body: "You're muted — click to unmute",
+        roomName: embed.room.name ?? 'Voice call',
+        roomId: embed.roomId,
+        sticky: true,
+        onClick: () => {
+          embed.control.setMicrophone(true);
+        },
+      });
+    }, CHECK_MS);
+    return () => window.clearInterval(id);
+  }, [embed, joined, enabled, pttMode, microphone, mx, setToast]);
+}
diff --git a/src/app/plugins/call/CallEmbed.ts b/src/app/plugins/call/CallEmbed.ts
index f6dd11e9a..4d8b8b389 100644
--- a/src/app/plugins/call/CallEmbed.ts
+++ b/src/app/plugins/call/CallEmbed.ts
@@ -45,6 +45,8 @@ export interface LotusCallParticipant {
   speaking: boolean;
   audioEnabled: boolean;
   videoEnabled: boolean;
+  /** [lotus #37] Local participant only: voice on the mic while it is muted. */
+  speakingWhileMuted?: boolean;
 }
 
 export class CallEmbed {
diff --git a/src/app/state/settings.ts b/src/app/state/settings.ts
index aefee0179..360712bc9 100644
--- a/src/app/state/settings.ts
+++ b/src/app/state/settings.ts
@@ -286,6 +286,8 @@ export interface Settings {
   fontFamily: 'system' | 'inter' | 'jetbrains-mono' | 'fira-code';
 
   afkAutoMute: boolean;
+  /** [Gitea #117] 'You're muted' nudge when talking into a muted mic. */
+  mutedTalkWarning: boolean;
   afkTimeoutMinutes: number;
 
   callJoinLeaveSound: 'off' | 'chime' | 'soft' | 'retro';
@@ -402,6 +404,7 @@ const defaultSettings: Settings = {
   fontFamily: 'inter',
 
   afkAutoMute: false,
+  mutedTalkWarning: true,
   afkTimeoutMinutes: 10,
 
   callJoinLeaveSound: 'chime',