diff --git a/locales/index.d.ts b/locales/index.d.ts
index 303f5df9c5..6a9d9f294e 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -12092,6 +12092,10 @@ export interface Locale extends ILocale {
      * {name} said something in a muted thread
      */
     "userSaysSomethingInMutedThread": ParameterizedString<"name">;
+    /**
+     * {name} has been silenced by {host} staff
+     */
+    "silencedUserSaysSomething": ParameterizedString<"name" | "host">;
     /**
      * {name} is flagged: "{cw}"
      */
diff --git a/packages/backend/src/core/WebhookTestService.ts b/packages/backend/src/core/WebhookTestService.ts
index 96b06ac0c2..5fabe2052d 100644
--- a/packages/backend/src/core/WebhookTestService.ts
+++ b/packages/backend/src/core/WebhookTestService.ts
@@ -409,6 +409,7 @@ export class WebhookTestService {
 			isMutingNote: false,
 			isFavorited: false,
 			isRenoted: false,
+			isSilenced: false,
 			visibility: note.visibility,
 			mentions: note.mentions,
 			visibleUserIds: note.visibleUserIds,
diff --git a/packages/backend/src/core/entities/NoteEntityService.ts b/packages/backend/src/core/entities/NoteEntityService.ts
index 3d329684ea..9df6e909a6 100644
--- a/packages/backend/src/core/entities/NoteEntityService.ts
+++ b/packages/backend/src/core/entities/NoteEntityService.ts
@@ -642,13 +642,26 @@ export class NoteEntityService implements OnModuleInit {
 					.getExists() : false),
 		]);
 
+		const packedUser = packedUsers?.get(note.userId) ?? this.userEntityService.pack(note.user ?? note.userId, me);
+		const isSilenced = Promise.resolve(packedUser).then(async u => {
+			if (!u.isSilenced && !u.instance?.isSilenced) return false;
+			if (note.userId === meId) return false;
+
+			if (meId) {
+				const followings = opts._hint_?.userFollowings ?? await this.cacheService.userFollowingsCache.fetch(meId);
+				if (followings.has(note.userId)) return false;
+			}
+
+			return true;
+		});
+
 		const packed: Packed<'Note'> = await awaitAll({
 			id: note.id,
 			threadId,
 			createdAt: this.idService.parse(note.id).date.toISOString(),
 			updatedAt: note.updatedAt ? note.updatedAt.toISOString() : undefined,
 			userId: note.userId,
-			user: packedUsers?.get(note.userId) ?? this.userEntityService.pack(note.user ?? note.userId, me),
+			user: packedUser,
 			text: text,
 			cw: note.cw,
 			mandatoryCW: note.mandatoryCW,
@@ -689,6 +702,7 @@ export class NoteEntityService implements OnModuleInit {
 			isMutingNote: mutedNotes.has(note.id),
 			isFavorited,
 			isRenoted,
+			isSilenced,
 
 			...(meId && Object.keys(reactions).length > 0 ? {
 				myReaction: this.populateMyReaction({
diff --git a/packages/backend/src/models/json-schema/note.ts b/packages/backend/src/models/json-schema/note.ts
index 6d3b9fe15e..5ebea6c740 100644
--- a/packages/backend/src/models/json-schema/note.ts
+++ b/packages/backend/src/models/json-schema/note.ts
@@ -193,6 +193,10 @@ export const packedNoteSchema = {
 			type: 'boolean',
 			optional: false, nullable: false,
 		},
+		isSilenced: {
+			type: 'boolean',
+			optional: false, nullable: false,
+		},
 		emojis: {
 			type: 'object',
 			optional: true, nullable: false,
diff --git a/packages/frontend/src/components/SkMutedNote.vue b/packages/frontend/src/components/SkMutedNote.vue
index 05a1273238..fac948a987 100644
--- a/packages/frontend/src/components/SkMutedNote.vue
+++ b/packages/frontend/src/components/SkMutedNote.vue
@@ -47,6 +47,16 @@ Displays a placeholder for a muted note.
 			</template>
 		</I18n>
 
+		<!-- Silenced users/instances -->
+		<I18n v-if="mute.isSilenced" :src="i18n.ts.silencedUserSaysSomething" tag="small">
+			<template #name>
+				<MkUserName :user="note.user"/>
+			</template>
+			<template #host>
+				{{ host }}
+			</template>
+		</I18n>
+
 		<!-- Word mutes -->
 		<template v-if="mutedWords">
 			<I18n v-if="prefer.s.showSoftWordMutedWord" :src="i18n.ts.userSaysSomethingAbout" tag="small">
diff --git a/packages/frontend/src/utility/check-word-mute.ts b/packages/frontend/src/utility/check-word-mute.ts
index 9406004312..c626cb48bf 100644
--- a/packages/frontend/src/utility/check-word-mute.ts
+++ b/packages/frontend/src/utility/check-word-mute.ts
@@ -16,7 +16,7 @@ export interface Mute {
 	softMutedWords?: string[];
 	sensitiveMuted?: boolean;
 
-	isSensitive?: boolean;
+	isSilenced?: boolean;
 
 	threadMuted?: boolean;
 	noteMuted?: boolean;
@@ -110,6 +110,7 @@ function getMutes(note: Misskey.entities.Note, withHardMute: boolean, overrides:
 	const hardMuted = override.hardMuted ?? (!isMe && withHardMute && isHardMuted(note));
 	const softMutedWords = override.softMutedWords ?? (isMe ? [] : isSoftMuted(note));
 	const sensitiveMuted = override.sensitiveMuted ?? isSensitiveMuted(note);
+	const isSilenced = override.isSilenced ?? note.isSilenced;
 	const threadMuted = override.threadMuted ?? (!isMe && note.isMutingThread);
 	const noteMuted = override.noteMuted ?? (!isMe && note.isMutingNote);
 	const noteMandatoryCW = override.noteMandatoryCW !== undefined
@@ -126,7 +127,7 @@ function getMutes(note: Misskey.entities.Note, withHardMute: boolean, overrides:
 
 	const hasMute = hardMuted || softMutedWords.length > 0 || sensitiveMuted || threadMuted || noteMuted || !!noteMandatoryCW || !!userMandatoryCW || !!instanceMandatoryCW;
 
-	return { hasMute, hardMuted, softMutedWords, sensitiveMuted, threadMuted, noteMuted, noteMandatoryCW, userMandatoryCW, instanceMandatoryCW };
+	return { hasMute, hardMuted, softMutedWords, sensitiveMuted, isSilenced, threadMuted, noteMuted, noteMandatoryCW, userMandatoryCW, instanceMandatoryCW };
 }
 
 function isHardMuted(note: Misskey.entities.Note): boolean {
diff --git a/packages/misskey-js/src/autogen/types.ts b/packages/misskey-js/src/autogen/types.ts
index ead1ca0c27..569b91158c 100644
--- a/packages/misskey-js/src/autogen/types.ts
+++ b/packages/misskey-js/src/autogen/types.ts
@@ -4731,6 +4731,7 @@ export type components = {
       isMutingNote: boolean;
       isFavorited: boolean;
       isRenoted: boolean;
+      isSilenced: boolean;
       emojis?: {
         [key: string]: string;
       };
diff --git a/sharkey-locales/en-US.yml b/sharkey-locales/en-US.yml
index f3e3951a7b..ddedfc92ef 100644
--- a/sharkey-locales/en-US.yml
+++ b/sharkey-locales/en-US.yml
@@ -35,6 +35,7 @@ muteNote: "Mute note"
 unmuteNote: "Unmute note"
 userSaysSomethingInMutedNote: "{name} said something in a muted post"
 userSaysSomethingInMutedThread: "{name} said something in a muted thread"
+silencedUserSaysSomething: "{name} has been silenced by {host} staff"
 userIsFlaggedAs: "{name} is flagged: \"{cw}\""
 noteIsFlaggedAs: "Note is flagged: \"{cw}\""
 instanceIsFlaggedAs: "{name} is flagged: \"{cw}\""