diff --git a/packages/backend/src/models/repositories/note.ts b/packages/backend/src/models/repositories/note.ts
index 25b8e8083..7c976d8d8 100644
--- a/packages/backend/src/models/repositories/note.ts
+++ b/packages/backend/src/models/repositories/note.ts
@@ -10,6 +10,7 @@ import {
 	Followings,
 	Polls,
 	Channels,
+	Notes,
 } from "../index.js";
 import type { Packed } from "@/misc/schema.js";
 import { nyaize } from "@/misc/nyaize.js";
@@ -95,6 +96,19 @@ async function populateMyReaction(
 	return undefined;
 }
 
+async function populateIsRenoted(
+	note: Note,
+	meId: User["id"],
+	_hint_?: {
+		myRenotes: Map<Note["id"], boolean>;
+	},
+) {
+	return _hint_?.myRenotes
+		? _hint_.myRenotes.get(note.id) ? true : undefined
+		: Notes.exist({ where: { renoteId: note.id, userId: meId } })
+			.then(res => res ? true : undefined);
+}
+
 export const NoteRepository = db.getRepository(Note).extend({
 	async isVisibleForMe(note: Note, meId: User["id"] | null): Promise<boolean> {
 		// This code must always be synchronized with the checks in generateVisibilityQuery.
@@ -156,6 +170,7 @@ export const NoteRepository = db.getRepository(Note).extend({
 			detail?: boolean;
 			_hint_?: {
 				myReactions: Map<Note["id"], NoteReaction | null>;
+				myRenotes: Map<Note["id"], boolean>;
 			};
 		},
 	): Promise<Packed<"Note">> {
@@ -240,6 +255,7 @@ export const NoteRepository = db.getRepository(Note).extend({
 			...(meId
 				? {
 						myReaction: populateMyReaction(note, meId, options?._hint_),
+						isRenoted: populateIsRenoted(note, meId, options?._hint_)
 				  }
 				: {}),
 
@@ -290,6 +306,7 @@ export const NoteRepository = db.getRepository(Note).extend({
 			detail?: boolean;
 			_hint_?: {
 				myReactions: Map<Note["id"], NoteReaction | null>;
+				myRenotes: Map<Note["id"], boolean>;
 			};
 		},
 	): Promise<Packed<"Note"> | undefined> {
@@ -311,6 +328,7 @@ export const NoteRepository = db.getRepository(Note).extend({
 
 		const meId = me ? me.id : null;
 		const myReactionsMap = new Map<Note["id"], NoteReaction | null>();
+		const myRenotesMap = new Map<Note["id"], boolean>();
 		if (meId) {
 			const renoteIds = notes
 				.filter((n) => n.renoteId != null)
@@ -320,12 +338,22 @@ export const NoteRepository = db.getRepository(Note).extend({
 				userId: meId,
 				noteId: In(targets),
 			});
+			const myRenotes = await Notes.createQueryBuilder('note')
+				.select('note.renoteId')
+				.where('note.userId = :meId', { meId })
+				.andWhere('note.renoteId IN (:...targets)', { targets })
+				.getMany();
 
 			for (const target of targets) {
 				myReactionsMap.set(
 					target,
 					myReactions.find((reaction) => reaction.noteId === target) || null,
 				);
+
+				myRenotesMap.set(
+					target,
+					!!myRenotes.find(p => p.renoteId == target),
+				);
 			}
 		}
 
@@ -337,6 +365,7 @@ export const NoteRepository = db.getRepository(Note).extend({
 					...options,
 					_hint_: {
 						myReactions: myReactionsMap,
+						myRenotes: myRenotesMap
 					},
 				}),
 			),
diff --git a/packages/backend/src/models/repositories/notification.ts b/packages/backend/src/models/repositories/notification.ts
index 1538e67d8..2f77c35ca 100644
--- a/packages/backend/src/models/repositories/notification.ts
+++ b/packages/backend/src/models/repositories/notification.ts
@@ -22,6 +22,7 @@ export const NotificationRepository = db.getRepository(Notification).extend({
 		options: {
 			_hintForEachNotes_?: {
 				myReactions: Map<Note["id"], NoteReaction | null>;
+				myRenotes: Map<Note["id"], boolean>;
 			};
 		},
 	): Promise<Packed<"Notification">> {
@@ -153,6 +154,7 @@ export const NotificationRepository = db.getRepository(Notification).extend({
 			.map((x) => x.note!);
 		const noteIds = notes.map((n) => n.id);
 		const myReactionsMap = new Map<Note["id"], NoteReaction | null>();
+		const myRenotesMap = new Map<Note["id"], boolean>();
 		const renoteIds = notes
 			.filter((n) => n.renoteId != null)
 			.map((n) => n.renoteId!);
@@ -161,12 +163,22 @@ export const NotificationRepository = db.getRepository(Notification).extend({
 			userId: meId,
 			noteId: In(targets),
 		});
+		const myRenotes = await Notes.createQueryBuilder('note')
+			.select('note.renoteId')
+			.where('note.userId = :meId', { meId })
+			.andWhere('note.renoteId IN array[:...targets]', { targets })
+			.getMany();
 
 		for (const target of targets) {
 			myReactionsMap.set(
 				target,
 				myReactions.find((reaction) => reaction.noteId === target) || null,
 			);
+
+			myRenotesMap.set(
+				target,
+				!!myRenotes.find(p => p.renoteId == target),
+			);
 		}
 
 		await prefetchEmojis(aggregateNoteEmojis(notes));
@@ -176,6 +188,7 @@ export const NotificationRepository = db.getRepository(Notification).extend({
 				this.pack(x, {
 					_hintForEachNotes_: {
 						myReactions: myReactionsMap,
+						myRenotes: myRenotesMap
 					},
 				}).catch((e) => null),
 			),
diff --git a/packages/backend/src/models/schema/note.ts b/packages/backend/src/models/schema/note.ts
index e17f054e8..b956e7d57 100644
--- a/packages/backend/src/models/schema/note.ts
+++ b/packages/backend/src/models/schema/note.ts
@@ -190,11 +190,15 @@ export const packedNoteSchema = {
 			optional: true,
 			nullable: false,
 		},
-
 		myReaction: {
 			type: "object",
 			optional: true,
 			nullable: true,
 		},
+		isRenoted: {
+			type: "boolean",
+			optional: true,
+			nullable: true,
+		}
 	},
 } as const;
diff --git a/packages/client/src/components/MkRenoteButton.vue b/packages/client/src/components/MkRenoteButton.vue
index 621c65d4e..9ee600aea 100644
--- a/packages/client/src/components/MkRenoteButton.vue
+++ b/packages/client/src/components/MkRenoteButton.vue
@@ -70,14 +70,7 @@ useTooltip(buttonRef, async (showing) => {
 	);
 });
 
-let hasRenotedBefore = $ref(false);
-os.api("notes/renotes", {
-	noteId: props.note.id,
-	userId: $i.id,
-	limit: 1,
-}).then((res) => {
-	hasRenotedBefore = res.length > 0;
-});
+let hasRenotedBefore = $ref(props.note.isRenoted ?? false);
 
 const renote = (viaKeyboard = false, ev?: MouseEvent) => {
 	pleaseLogin();
diff --git a/packages/iceshrimp-js/src/entities.ts b/packages/iceshrimp-js/src/entities.ts
index e4777a4ce..e47b05caa 100644
--- a/packages/iceshrimp-js/src/entities.ts
+++ b/packages/iceshrimp-js/src/entities.ts
@@ -151,6 +151,7 @@ export type Note = {
 	localOnly?: boolean;
 	channel?: Channel["id"];
 	myReaction?: string;
+	isRenoted?: boolean;
 	reactions: Record<string, number>;
 	renoteCount: number;
 	repliesCount: number;