diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7890408cd6..e8b845974c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,7 @@
   - ユーザーが誤ったメールアドレスを入力した場合に招待コードが失効してしまう問題が解消されます。
 - Enhance: すでにフォローしたすべての人の返信をTLに追加できるように
 - Enhance: 未読の通知数を表示できるように
+- Enhance: 通知されず、確認の必要もないお知らせ(silence)を作成可能になりました
 - Enhance: ローカリゼーションの更新
 - Enhance: 依存関係の更新
 - Change: CWを使用する場合、注釈を空にすることは許可されなくなりました
diff --git a/locales/index.d.ts b/locales/index.d.ts
index aedaaa9f7c..fc6653b05b 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -1172,6 +1172,8 @@ export interface Locale {
         "readConfirmText": string;
         "shouldNotBeUsedToPresentPermanentInfo": string;
         "dialogAnnouncementUxWarn": string;
+        "silence": string;
+        "silenceDescription": string;
     };
     "_initialAccountSetting": {
         "accountCreated": string;
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 6ecebfc393..67a57f994c 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1170,6 +1170,8 @@ _announcement:
   readConfirmText: "「{title}」の内容を読み、既読にします。"
   shouldNotBeUsedToPresentPermanentInfo: "特に新規ユーザーのUXを損ねる可能性が高いため、ストック情報ではなくフロー情報の掲示にお知らせを使用することを推奨します。"
   dialogAnnouncementUxWarn: "ダイアログ形式のお知らせが同時に2つ以上ある場合、UXに悪影響を及ぼす可能性が非常に高いため、使用は慎重に行うことを推奨します。"
+  silence: "非通知"
+  silenceDescription: "オンにすると、このお知らせは通知されず、既読にする必要もなくなります。"
 
 _initialAccountSetting:
   accountCreated: "アカウントの作成が完了しました！"
diff --git a/packages/backend/migration/1699141698112-announcement-silence.js b/packages/backend/migration/1699141698112-announcement-silence.js
new file mode 100644
index 0000000000..eef9b076fc
--- /dev/null
+++ b/packages/backend/migration/1699141698112-announcement-silence.js
@@ -0,0 +1,18 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export class AnnouncementSilence1699141698112 {
+    name = 'AnnouncementSilence1699141698112'
+
+    async up(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "announcement" ADD "silence" boolean NOT NULL DEFAULT false`);
+        await queryRunner.query(`CREATE INDEX "IDX_7b8d9225168e962f94ea517e00" ON "announcement" ("silence") `);
+    }
+
+    async down(queryRunner) {
+        await queryRunner.query(`DROP INDEX "public"."IDX_7b8d9225168e962f94ea517e00"`);
+        await queryRunner.query(`ALTER TABLE "announcement" DROP COLUMN "silence"`);
+    }
+}
diff --git a/packages/backend/src/core/AnnouncementService.ts b/packages/backend/src/core/AnnouncementService.ts
index ec1a082d78..8c348e595d 100644
--- a/packages/backend/src/core/AnnouncementService.ts
+++ b/packages/backend/src/core/AnnouncementService.ts
@@ -47,6 +47,7 @@ export class AnnouncementService {
 
 		const q = this.announcementsRepository.createQueryBuilder('announcement')
 			.where('announcement.isActive = true')
+			.andWhere('announcement.silence = false')
 			.andWhere(new Brackets(qb => {
 				qb.orWhere('announcement.userId = :userId', { userId: user.id });
 				qb.orWhere('announcement.userId IS NULL');
@@ -73,6 +74,7 @@ export class AnnouncementService {
 			icon: values.icon,
 			display: values.display,
 			forExistingUsers: values.forExistingUsers,
+			silence: values.silence,
 			needConfirmationToRead: values.needConfirmationToRead,
 			userId: values.userId,
 		}).then(x => this.announcementsRepository.findOneByOrFail(x.identifiers[0]));
@@ -124,6 +126,7 @@ export class AnnouncementService {
 			display: values.display,
 			icon: values.icon,
 			forExistingUsers: values.forExistingUsers,
+			silence: values.silence,
 			needConfirmationToRead: values.needConfirmationToRead,
 			isActive: values.isActive,
 		});
@@ -210,6 +213,7 @@ export class AnnouncementService {
 			icon: announcement.icon,
 			display: announcement.display,
 			needConfirmationToRead: announcement.needConfirmationToRead,
+			silence: announcement.silence,
 			forYou: announcement.userId === me?.id,
 			isRead: reads.some(read => read.announcementId === announcement.id),
 		}));
diff --git a/packages/backend/src/models/Announcement.ts b/packages/backend/src/models/Announcement.ts
index 05d5a086f1..8f8be88fed 100644
--- a/packages/backend/src/models/Announcement.ts
+++ b/packages/backend/src/models/Announcement.ts
@@ -66,6 +66,12 @@ export class MiAnnouncement {
 	})
 	public forExistingUsers: boolean;
 
+	@Index()
+	@Column('boolean', {
+		default: false,
+	})
+	public silence: boolean;
+
 	@Index()
 	@Column({
 		...id(),
diff --git a/packages/backend/src/server/api/endpoints/admin/announcements/create.ts b/packages/backend/src/server/api/endpoints/admin/announcements/create.ts
index 253a29cf5a..69c31a05eb 100644
--- a/packages/backend/src/server/api/endpoints/admin/announcements/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/announcements/create.ts
@@ -58,6 +58,7 @@ export const paramDef = {
 		icon: { type: 'string', enum: ['info', 'warning', 'error', 'success'], default: 'info' },
 		display: { type: 'string', enum: ['normal', 'banner', 'dialog'], default: 'normal' },
 		forExistingUsers: { type: 'boolean', default: false },
+		silence: { type: 'boolean', default: false },
 		needConfirmationToRead: { type: 'boolean', default: false },
 		userId: { type: 'string', format: 'misskey:id', nullable: true, default: null },
 	},
@@ -78,6 +79,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				icon: ps.icon,
 				display: ps.display,
 				forExistingUsers: ps.forExistingUsers,
+				silence: ps.silence,
 				needConfirmationToRead: ps.needConfirmationToRead,
 				userId: ps.userId,
 			}, me);
diff --git a/packages/backend/src/server/api/endpoints/admin/announcements/list.ts b/packages/backend/src/server/api/endpoints/admin/announcements/list.ts
index 0bda61a361..9630299a6e 100644
--- a/packages/backend/src/server/api/endpoints/admin/announcements/list.ts
+++ b/packages/backend/src/server/api/endpoints/admin/announcements/list.ts
@@ -114,6 +114,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				display: announcement.display,
 				isActive: announcement.isActive,
 				forExistingUsers: announcement.forExistingUsers,
+				silence: announcement.silence,
 				needConfirmationToRead: announcement.needConfirmationToRead,
 				userId: announcement.userId,
 				reads: reads.get(announcement)!,
diff --git a/packages/backend/src/server/api/endpoints/admin/announcements/update.ts b/packages/backend/src/server/api/endpoints/admin/announcements/update.ts
index d36590c264..717866aead 100644
--- a/packages/backend/src/server/api/endpoints/admin/announcements/update.ts
+++ b/packages/backend/src/server/api/endpoints/admin/announcements/update.ts
@@ -35,6 +35,7 @@ export const paramDef = {
 		icon: { type: 'string', enum: ['info', 'warning', 'error', 'success'] },
 		display: { type: 'string', enum: ['normal', 'banner', 'dialog'] },
 		forExistingUsers: { type: 'boolean' },
+		silence: { type: 'boolean' },
 		needConfirmationToRead: { type: 'boolean' },
 		isActive: { type: 'boolean' },
 	},
@@ -63,6 +64,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				display: ps.display,
 				icon: ps.icon,
 				forExistingUsers: ps.forExistingUsers,
+				silence: ps.silence,
 				needConfirmationToRead: ps.needConfirmationToRead,
 				isActive: ps.isActive,
 			}, me);
diff --git a/packages/frontend/src/pages/admin/announcements.vue b/packages/frontend/src/pages/admin/announcements.vue
index 36a67eba31..5785fb118c 100644
--- a/packages/frontend/src/pages/admin/announcements.vue
+++ b/packages/frontend/src/pages/admin/announcements.vue
@@ -48,6 +48,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<MkSwitch v-model="announcement.forExistingUsers" :helpText="i18n.ts._announcement.forExistingUsersDescription">
 						{{ i18n.ts._announcement.forExistingUsers }}
 					</MkSwitch>
+					<MkSwitch v-model="announcement.silence" :helpText="i18n.ts._announcement.silenceDescription">
+						{{ i18n.ts._announcement.silence }}
+					</MkSwitch>
 					<MkSwitch v-model="announcement.needConfirmationToRead" :helpText="i18n.ts._announcement.needConfirmationToReadDescription">
 						{{ i18n.ts._announcement.needConfirmationToRead }}
 					</MkSwitch>
@@ -97,6 +100,7 @@ function add() {
 		icon: 'info',
 		display: 'normal',
 		forExistingUsers: false,
+		silence: false,
 		needConfirmationToRead: false,
 	});
 }
diff --git a/packages/frontend/src/pages/announcements.vue b/packages/frontend/src/pages/announcements.vue
index babac9d805..afc6a98281 100644
--- a/packages/frontend/src/pages/announcements.vue
+++ b/packages/frontend/src/pages/announcements.vue
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<section v-for="announcement in items" :key="announcement.id" class="_panel" :class="$style.announcement">
 					<div v-if="announcement.forYou" :class="$style.forYou"><i class="ti ti-pin"></i> {{ i18n.ts.forYou }}</div>
 					<div :class="$style.header">
-						<span v-if="$i && !announcement.isRead" style="margin-right: 0.5em;">🆕</span>
+						<span v-if="$i && !announcement.silence && !announcement.isRead" style="margin-right: 0.5em;">🆕</span>
 						<span style="margin-right: 0.5em;">
 							<i v-if="announcement.icon === 'info'" class="ti ti-info-circle"></i>
 							<i v-else-if="announcement.icon === 'warning'" class="ti ti-alert-triangle" style="color: var(--warn);"></i>
@@ -29,7 +29,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<MkTime :time="announcement.updatedAt ?? announcement.createdAt" mode="detail"/>
 						</div>
 					</div>
-					<div v-if="tab !== 'past' && $i && !announcement.isRead" :class="$style.footer">
+					<div v-if="tab !== 'past' && $i && !announcement.silence && !announcement.isRead" :class="$style.footer">
 						<MkButton primary @click="read(announcement)"><i class="ti ti-check"></i> {{ i18n.ts.gotIt }}</MkButton>
 					</div>
 				</section>