diff --git a/CHANGELOG.md b/CHANGELOG.md
index c7a0fbdada..2e873acf0d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -396,6 +396,7 @@
   - 投稿フォームをリセットできるように
   - 文字数カウントを復活
 - Enhance: 2段階認証時のリカバリーコードのファイル名にサーバーURLを含めるように
+- Enhance: Blueskyの投稿埋め込みプレビューに対応
 - Enhance: 全体的なブラッシュアップ
 - Enhance 全体的なパフォーマンス向上
 - Enhance: ファイルのアップロードでデフォルトで圧縮するかどうかのオプションが廃止され、アップロード時に圧縮するかどうかを選択するようになりました
diff --git a/locales/index.d.ts b/locales/index.d.ts
index 0cee5b27e5..ae1d37d659 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -2601,7 +2601,7 @@ export interface Locale extends ILocale {
     /**
      * ポストを展開する
      */
-    "expandTweet": string;
+    "expandPost": string;
     /**
      * テーマエディター
      */
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 3cb8248948..3d09b77c93 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -645,7 +645,7 @@ poll: "アンケート"
 useCw: "内容を隠す"
 enablePlayer: "プレイヤーを開く"
 disablePlayer: "プレイヤーを閉じる"
-expandTweet: "ポストを展開する"
+expandPost: "ポストを展開する"
 themeEditor: "テーマエディター"
 description: "説明"
 describeFile: "キャプションを付ける"
diff --git a/packages/frontend/src/components/MkUrlPreview.vue b/packages/frontend/src/components/MkUrlPreview.vue
index 7c0c06398b..9947d3a87e 100644
--- a/packages/frontend/src/components/MkUrlPreview.vue
+++ b/packages/frontend/src/components/MkUrlPreview.vue
@@ -26,19 +26,34 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</MkButton>
 	</div>
 </template>
-<template v-else-if="tweetId && tweetExpanded">
-	<div ref="twitter">
+<template v-else-if="tweetId && postExpanded">
+	<div>
 		<iframe
-			ref="tweet"
 			allow="fullscreen;web-share"
 			sandbox="allow-popups allow-popups-to-escape-sandbox allow-scripts allow-same-origin"
 			scrolling="no"
-			:style="{ position: 'relative', width: '100%', height: `${tweetHeight}px`, border: 0 }"
+			:style="{ position: 'relative', width: '100%', height: `${postHeight}px`, border: 0 }"
 			:src="`https://platform.twitter.com/embed/index.html?embedId=${embedId}&amp;hideCard=false&amp;hideThread=false&amp;lang=en&amp;theme=${store.s.darkMode ? 'dark' : 'light'}&amp;id=${tweetId}`"
 		></iframe>
 	</div>
 	<div :class="$style.action">
-		<MkButton :small="true" inline @click="tweetExpanded = false">
+		<MkButton :small="true" inline @click="postExpanded = false">
+			<i class="ti ti-x"></i> {{ i18n.ts.close }}
+		</MkButton>
+	</div>
+</template>
+<template v-else-if="bskyDid && bskyPostRecordKey && postExpanded">
+	<div>
+		<iframe
+			allow="fullscreen;web-share"
+			sandbox="allow-popups allow-popups-to-escape-sandbox allow-scripts allow-same-origin"
+			scrolling="no"
+			:style="{ position: 'relative', width: '100%', height: `${postHeight}px`, border: 0 }"
+			:src="`https://embed.bsky.app/embed/${bskyDid}/app.bsky.feed.post/${bskyPostRecordKey}?id=${embedId}&colorMode=system`"
+		></iframe>
+	</div>
+	<div :class="$style.action">
+		<MkButton :small="true" inline @click="postExpanded = false">
 			<i class="ti ti-x"></i> {{ i18n.ts.close }}
 		</MkButton>
 	</div>
@@ -66,8 +81,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 	</component>
 	<template v-if="showActions">
 		<div v-if="tweetId" :class="$style.action">
-			<MkButton :small="true" inline @click="tweetExpanded = true">
-				<i class="ti ti-brand-x"></i> {{ i18n.ts.expandTweet }}
+			<MkButton :small="true" inline @click="postExpanded = true">
+				<i class="ti ti-brand-x"></i> {{ i18n.ts.expandPost }}
+			</MkButton>
+		</div>
+		<div v-if="bskyPostRecordKey" :class="$style.action">
+			<MkButton :small="true" inline @click="openBskyEmbed">
+				<i class="ti ti-brand-bluesky"></i> {{ i18n.ts.expandPost }}
 			</MkButton>
 		</div>
 		<div v-if="!playerEnabled && player.url" :class="$style.action">
@@ -129,10 +149,17 @@ const player = ref({
 	height: null,
 } as SummalyResult['player']);
 const playerEnabled = ref(false);
-const tweetId = ref<string | null>(null);
-const tweetExpanded = ref(props.detail);
+
 const embedId = `embed${Math.random().toString().replace(/\D/, '')}`;
-const tweetHeight = ref(150);
+const postExpanded = ref(props.detail);
+const postHeight = ref(150);
+
+const tweetId = ref<string | null>(null);
+
+const bskyHandleOrDid = ref<string | null>(null);
+const bskyDid = ref<string | null>(null);
+const bskyPostRecordKey = ref<string | null>(null);
+
 const unknownUrl = ref(false);
 
 onDeactivated(() => {
@@ -147,6 +174,19 @@ if (requestUrl.hostname === 'twitter.com' || requestUrl.hostname === 'mobile.twi
 	if (m) tweetId.value = m[1];
 }
 
+if (requestUrl.hostname === 'bsky.app') {
+	const bskyPostPageUrl = requestUrl.pathname.slice(1).split('/');
+
+	if (bskyPostPageUrl[0] === 'profile' && bskyPostPageUrl[1] && bskyPostPageUrl[2] === 'post' && bskyPostPageUrl[3]) {
+		bskyHandleOrDid.value = bskyPostPageUrl[1];
+		bskyPostRecordKey.value = bskyPostPageUrl[3];
+
+		if (postExpanded.value) {
+			openBskyEmbed();
+		}
+	}
+}
+
 if (requestUrl.hostname === 'music.youtube.com' && requestUrl.pathname.match('^/(?:watch|channel)')) {
 	requestUrl.hostname = 'www.youtube.com';
 }
@@ -183,13 +223,23 @@ window.fetch(`/url?url=${encodeURIComponent(requestUrl.href)}&lang=${versatileLa
 		sensitive.value = info.sensitive ?? false;
 	});
 
-function adjustTweetHeight(message: MessageEvent) {
-	if (message.origin !== 'https://platform.twitter.com') return;
-	const embed = message.data?.['twttr.embed'];
-	if (embed?.method !== 'twttr.private.resize') return;
-	if (embed?.id !== embedId) return;
-	const height = embed?.params[0]?.height;
-	if (height) tweetHeight.value = height;
+async function openBskyEmbed() {
+	if (bskyHandleOrDid.value == null || bskyPostRecordKey.value == null) return;
+
+	if (bskyDid.value == null) {
+		if (bskyHandleOrDid.value.startsWith('did:')) {
+			bskyDid.value = bskyHandleOrDid.value;
+		} else {
+			// handleで来ている場合はdidに変換
+			const bskyApiRes = await window.fetch(`https://public.api.bsky.app/xrpc/com.atproto.identity.resolveHandle?handle=${bskyHandleOrDid.value}`);
+			if (bskyApiRes.ok) {
+				const bskyApiData = await bskyApiRes.json() as { did: string };
+				bskyDid.value = bskyApiData.did;
+			}
+		}
+	}
+
+	postExpanded.value = true;
 }
 
 function openPlayer(): void {
@@ -202,10 +252,25 @@ function openPlayer(): void {
 	});
 }
 
-window.addEventListener('message', adjustTweetHeight);
+function adjustSocialsEmbedHeight(message: MessageEvent) {
+	if (message.origin === 'https://platform.twitter.com') {
+		const embed = message.data?.['twttr.embed'];
+		if (embed?.method === 'twttr.private.resize' && embed?.id === embedId) {
+			const height = embed?.params[0]?.height;
+			if (height) postHeight.value = height;
+		}
+	} else if (message.origin === 'https://embed.bsky.app') {
+		if (message.data?.id === embedId) {
+			const height = message.data?.height;
+			if (height) postHeight.value = height;
+		}
+	}
+}
+
+window.addEventListener('message', adjustSocialsEmbedHeight);
 
 onUnmounted(() => {
-	window.removeEventListener('message', adjustTweetHeight);
+	window.removeEventListener('message', adjustSocialsEmbedHeight);
 });
 </script>