diff --git a/locales/en-US.yml b/locales/en-US.yml
index 598f742896..03a5a91e84 100644
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@@ -321,6 +321,7 @@ lightThemes: "Light themes"
 darkThemes: "Dark themes"
 syncDeviceDarkMode: "Sync Dark Mode with your device settings"
 drive: "Drive"
+driveSearchbarPlaceholder: "Search drive"
 fileName: "Filename"
 selectFile: "Select a file"
 selectFiles: "Select files"
diff --git a/locales/index.d.ts b/locales/index.d.ts
index e3434d7dbf..7020bc2159 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -1300,6 +1300,10 @@ export interface Locale extends ILocale {
      * ドライブ
      */
     "drive": string;
+    /**
+     * 検索ドライブ
+     */
+    "driveSearchbarPlaceholder": string;
     /**
      * ファイル名
      */
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index c25b421172..8f3bb4f48c 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -321,6 +321,7 @@ lightThemes: "明るいテーマ"
 darkThemes: "暗いテーマ"
 syncDeviceDarkMode: "デバイスのダークモードと同期する"
 drive: "ドライブ"
+driveSearchbarPlaceholder: "検索ドライブ"
 fileName: "ファイル名"
 selectFile: "ファイルを選択"
 selectFiles: "ファイルを選択"
diff --git a/packages/backend/src/server/api/endpoints/drive/files.ts b/packages/backend/src/server/api/endpoints/drive/files.ts
index 10c521332d..6d87d5ddf7 100644
--- a/packages/backend/src/server/api/endpoints/drive/files.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files.ts
@@ -9,6 +9,7 @@ import type { DriveFilesRepository } from '@/models/_.js';
 import { QueryService } from '@/core/QueryService.js';
 import { DriveFileEntityService } from '@/core/entities/DriveFileEntityService.js';
 import { DI } from '@/di-symbols.js';
+import { sqlLikeEscape } from '@/misc/sql-like-escape.js';
 
 export const meta = {
 	tags: ['drive'],
@@ -37,6 +38,7 @@ export const paramDef = {
 		folderId: { type: 'string', format: 'misskey:id', nullable: true, default: null },
 		type: { type: 'string', nullable: true, pattern: /^[a-zA-Z\/\-*]+$/.toString().slice(1, -1) },
 		sort: { type: 'string', nullable: true, enum: ['+createdAt', '-createdAt', '+name', '-name', '+size', '-size', null] },
+		searchQuery: { type: 'string', default: '' }
 	},
 	required: [],
 } as const;
@@ -60,6 +62,10 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				query.andWhere('file.folderId IS NULL');
 			}
 
+			if (ps.searchQuery.length > 0) {
+				query.andWhere('file.name ILIKE :searchQuery OR file.comment ILIKE :searchQuery', { searchQuery: `%${sqlLikeEscape(ps.searchQuery)}%` });
+			}
+
 			if (ps.type) {
 				if (ps.type.endsWith('/*')) {
 					query.andWhere('file.type like :type', { type: ps.type.replace('/*', '/') + '%' });
diff --git a/packages/backend/src/server/api/endpoints/drive/folders.ts b/packages/backend/src/server/api/endpoints/drive/folders.ts
index 8c4848f8e1..9bcd824882 100644
--- a/packages/backend/src/server/api/endpoints/drive/folders.ts
+++ b/packages/backend/src/server/api/endpoints/drive/folders.ts
@@ -9,6 +9,7 @@ import type { DriveFoldersRepository } from '@/models/_.js';
 import { QueryService } from '@/core/QueryService.js';
 import { DriveFolderEntityService } from '@/core/entities/DriveFolderEntityService.js';
 import { DI } from '@/di-symbols.js';
+import { sqlLikeEscape } from '@/misc/sql-like-escape.js';
 
 export const meta = {
 	tags: ['drive'],
@@ -35,6 +36,7 @@ export const paramDef = {
 		sinceId: { type: 'string', format: 'misskey:id' },
 		untilId: { type: 'string', format: 'misskey:id' },
 		folderId: { type: 'string', format: 'misskey:id', nullable: true, default: null },
+		searchQuery: { type: 'string', default: '' }
 	},
 	required: [],
 } as const;
@@ -58,6 +60,9 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				query.andWhere('folder.parentId IS NULL');
 			}
 
+			if (ps.searchQuery.length > 0) {
+				query.andWhere('folder.name ILIKE :searchQuery', { searchQuery: `%${sqlLikeEscape(ps.searchQuery)}%` });
+			}
 			const folders = await query.limit(ps.limit).getMany();
 
 			return await Promise.all(folders.map(folder => this.driveFolderEntityService.pack(folder)));
diff --git a/packages/frontend/src/components/MkDrive.vue b/packages/frontend/src/components/MkDrive.vue
index a9717b4fb7..222fabb8f4 100644
--- a/packages/frontend/src/components/MkDrive.vue
+++ b/packages/frontend/src/components/MkDrive.vue
@@ -30,7 +30,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<span v-if="folder != null" :class="[$style.navPathItem, $style.navSeparator]"><i class="ti ti-chevron-right"></i></span>
 			<span v-if="folder != null" :class="[$style.navPathItem, $style.navCurrent]">{{ folder.name }}</span>
 		</div>
-		<button class="_button" :class="$style.navMenu" @click="showMenu"><i class="ti ti-dots"></i></button>
+		<div :class="$style.navMenu">
+			<!-- "Search drive via alt text or file names" -->
+			<MkInput v-model="searchQuery" :large="true" :autofocus="true" type="search" :placeholder="i18n.ts.driveSearchbarPlaceholder" @enter="fetch">
+				<template #prefix><i class="ph-magnifying-glass ph-bold ph-lg"></i></template>
+			</MkInput>
+
+			<button class="_button" :class="$style.navMenu" @click="showMenu"><i class="ti ti-dots"></i></button>
+		</div>
 	</nav>
 	<div
 		ref="main"
@@ -102,6 +109,7 @@ import type { MenuItem } from '@/types/menu.js';
 import XNavFolder from '@/components/MkDrive.navFolder.vue';
 import XFolder from '@/components/MkDrive.folder.vue';
 import XFile from '@/components/MkDrive.file.vue';
+import MkInput from '@/components/MkInput.vue';
 import * as os from '@/os.js';
 import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useStream } from '@/stream.js';
@@ -110,6 +118,8 @@ import { i18n } from '@/i18n.js';
 import { uploadFile, uploads } from '@/scripts/upload.js';
 import { claimAchievement } from '@/scripts/achievements.js';
 
+const searchQuery = ref('');
+
 const props = withDefaults(defineProps<{
 	initialFolder?: Misskey.entities.DriveFolder;
 	type?: string;
@@ -540,6 +550,7 @@ async function fetch() {
 	const foldersPromise = misskeyApi('drive/folders', {
 		folderId: folder.value ? folder.value.id : null,
 		limit: foldersMax + 1,
+		searchQuery: searchQuery.value.toString().trim(),
 	}).then(fetchedFolders => {
 		if (fetchedFolders.length === foldersMax + 1) {
 			moreFolders.value = true;
@@ -552,6 +563,7 @@ async function fetch() {
 		folderId: folder.value ? folder.value.id : null,
 		type: props.type,
 		limit: filesMax + 1,
+		searchQuery: searchQuery.value.toString().trim(),
 	}).then(fetchedFiles => {
 		if (fetchedFiles.length === filesMax + 1) {
 			moreFiles.value = true;
@@ -578,6 +590,7 @@ function fetchMoreFolders() {
 		type: props.type,
 		untilId: folders.value.at(-1)?.id,
 		limit: max + 1,
+		searchQuery: searchQuery.value.toString().trim(),
 	}).then(folders => {
 		if (folders.length === max + 1) {
 			moreFolders.value = true;
@@ -601,6 +614,7 @@ function fetchMoreFiles() {
 		type: props.type,
 		untilId: files.value.at(-1)?.id,
 		limit: max + 1,
+		searchQuery: searchQuery.value.toString().trim(),
 	}).then(files => {
 		if (files.length === max + 1) {
 			moreFiles.value = true;
@@ -747,8 +761,13 @@ onBeforeUnmount(() => {
 }
 
 .navMenu {
+	display: flex;
 	margin-left: auto;
-	padding: 0 12px;
+	align-items: center;
+}
+
+.navMenu > *:not(:last-child) {
+	padding-right: 12px;
 }
 
 .main {