diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 7d716f6ca..32cf7d075 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1034,6 +1034,7 @@ admin/views/index.vue:
   dashboard: "ダッシュボード"
   instance: "インスタンス"
   emoji: "カスタム絵文字"
+  moderators: "モデレーター"
   users: "ユーザー"
   update: "更新"
   announcements: "お知らせ"
@@ -1133,6 +1134,12 @@ admin/views/users.vue:
   unverify: "公式アカウントを解除する"
   unverified: "公式アカウントを解除しました"
 
+admin/views/moderators.vue:
+  add-moderator:
+    title: "モデレーターの登録"
+    add: "登録"
+    added: "モデレーターを登録しました"
+
 admin/views/emoji.vue:
   add-emoji:
     title: "絵文字の登録"
diff --git a/src/client/app/admin/views/index.vue b/src/client/app/admin/views/index.vue
index a5ffb2098..116d794b9 100644
--- a/src/client/app/admin/views/index.vue
+++ b/src/client/app/admin/views/index.vue
@@ -20,6 +20,7 @@
 		<ul>
 			<li @click="nav('dashboard')" :class="{ active: page == 'dashboard' }"><fa icon="home" fixed-width/>{{ $t('dashboard') }}</li>
 			<li @click="nav('instance')" :class="{ active: page == 'instance' }"><fa icon="cog" fixed-width/>{{ $t('instance') }}</li>
+			<li @click="nav('moderators')" :class="{ active: page == 'moderators' }"><fa :icon="faHeadset" fixed-width/>{{ $t('moderators') }}</li>
 			<li @click="nav('users')" :class="{ active: page == 'users' }"><fa icon="users" fixed-width/>{{ $t('users') }}</li>
 			<li @click="nav('emoji')" :class="{ active: page == 'emoji' }"><fa :icon="faGrin" fixed-width/>{{ $t('emoji') }}</li>
 			<li @click="nav('announcements')" :class="{ active: page == 'announcements' }"><fa icon="broadcast-tower" fixed-width/>{{ $t('announcements') }}</li>
@@ -38,6 +39,7 @@
 	<main>
 		<div v-if="page == 'dashboard'"><x-dashboard/></div>
 		<div v-if="page == 'instance'"><x-instance/></div>
+		<div v-if="page == 'moderators'"><x-moderators/></div>
 		<div v-if="page == 'users'"><x-users/></div>
 		<div v-if="page == 'emoji'"><x-emoji/></div>
 		<div v-if="page == 'announcements'"><x-announcements/></div>
@@ -54,11 +56,12 @@ import i18n from '../../i18n';
 import { version } from '../../config';
 import XDashboard from "./dashboard.vue";
 import XInstance from "./instance.vue";
+import XModerators from "./moderators.vue";
 import XEmoji from "./emoji.vue";
 import XAnnouncements from "./announcements.vue";
 import XHashtags from "./hashtags.vue";
 import XUsers from "./users.vue";
-import { faArrowLeft } from '@fortawesome/free-solid-svg-icons';
+import { faHeadset, faArrowLeft } from '@fortawesome/free-solid-svg-icons';
 import { faGrin } from '@fortawesome/free-regular-svg-icons';
 
 // Detect the user agent
@@ -70,6 +73,7 @@ export default Vue.extend({
 	components: {
 		XDashboard,
 		XInstance,
+		XModerators,
 		XEmoji,
 		XAnnouncements,
 		XHashtags,
@@ -85,7 +89,8 @@ export default Vue.extend({
 			isMobile,
 			navOpend: !isMobile,
 			faGrin,
-			faArrowLeft
+			faArrowLeft,
+			faHeadset
 		};
 	},
 	methods: {
diff --git a/src/client/app/admin/views/moderators.vue b/src/client/app/admin/views/moderators.vue
new file mode 100644
index 000000000..ebf20c12f
--- /dev/null
+++ b/src/client/app/admin/views/moderators.vue
@@ -0,0 +1,61 @@
+<template>
+<div class="jnhmugbb">
+	<ui-card>
+		<div slot="title"><fa icon="plus"/> {{ $t('add-moderator.title') }}</div>
+		<section class="fit-top">
+			<ui-input v-model="username" type="text">
+				<span slot="prefix">@</span>
+			</ui-input>
+			<ui-button @click="add" :disabled="adding">{{ $t('add-moderator.add') }}</ui-button>
+		</section>
+	</ui-card>
+</div>
+</template>
+
+<script lang="ts">
+import Vue from 'vue';
+import i18n from '../../i18n';
+import parseAcct from "../../../../misc/acct/parse";
+
+export default Vue.extend({
+	i18n: i18n('admin/views/moderators.vue'),
+
+	data() {
+		return {
+			username: '',
+			adding: false
+		};
+	},
+
+	methods: {
+		async add() {
+			this.adding = true;
+
+			const process = async () => {
+				const user = await this.$root.api('users/show', parseAcct(this.username));
+				await this.$root.api('admin/moderators/add', { userId: user.id });
+				this.$root.alert({
+					type: 'success',
+					text: this.$t('add-moderator.added')
+				});
+			};
+
+			await process().catch(e => {
+				this.$root.alert({
+					type: 'error',
+					text: e
+				});
+			});
+
+			this.adding = false;
+		},
+	}
+});
+</script>
+
+<style lang="stylus" scoped>
+.jnhmugbb
+	@media (min-width 500px)
+		padding 16px
+
+</style>
diff --git a/src/client/app/common/views/components/note-menu.vue b/src/client/app/common/views/components/note-menu.vue
index d848cb765..7d15b4ed7 100644
--- a/src/client/app/common/views/components/note-menu.vue
+++ b/src/client/app/common/views/components/note-menu.vue
@@ -55,7 +55,7 @@ export default Vue.extend({
 							}
 					] : []
 				], [
-					this.note.userId == this.$store.state.i.id || this.$store.state.i.isAdmin ? [{
+					this.note.userId == this.$store.state.i.id || this.$store.state.i.isAdmin || this.$store.state.i.isModerator ? [{
 						icon: ['far', 'trash-alt'],
 						text: this.$t('delete'),
 						action: this.del
diff --git a/src/client/app/desktop/views/components/ui.header.account.vue b/src/client/app/desktop/views/components/ui.header.account.vue
index 79410273a..a16f16455 100644
--- a/src/client/app/desktop/views/components/ui.header.account.vue
+++ b/src/client/app/desktop/views/components/ui.header.account.vue
@@ -58,7 +58,7 @@
 						<i><fa icon="angle-right"/></i>
 					</p>
 				</li>
-				<li v-if="$store.state.i.isAdmin">
+				<li v-if="$store.state.i.isAdmin || $store.state.i.isModerator">
 					<a href="/admin">
 						<i><fa icon="terminal"/></i>
 						<span>{{ $t('admin') }}</span>
diff --git a/src/client/app/mobile/views/components/ui.nav.vue b/src/client/app/mobile/views/components/ui.nav.vue
index c529ae261..4f085a5e6 100644
--- a/src/client/app/mobile/views/components/ui.nav.vue
+++ b/src/client/app/mobile/views/components/ui.nav.vue
@@ -30,7 +30,7 @@
 				<ul>
 					<li><a @click="search"><i><fa icon="search"/></i>{{ $t('search') }}<i><fa icon="angle-right"/></i></a></li>
 					<li><router-link to="/i/settings" :data-active="$route.name == 'settings'"><i><fa icon="cog"/></i>{{ $t('settings') }}<i><fa icon="angle-right"/></i></router-link></li>
-					<li v-if="$store.getters.isSignedIn && $store.state.i.isAdmin"><a href="/admin"><i><fa icon="terminal"/></i><span>{{ $t('admin') }}</span><i><fa icon="angle-right"/></i></a></li>
+					<li v-if="$store.getters.isSignedIn && ($store.state.i.isAdmin || $store.state.i.isModerator)"><a href="/admin"><i><fa icon="terminal"/></i><span>{{ $t('admin') }}</span><i><fa icon="angle-right"/></i></a></li>
 					<li @click="dark"><p><template v-if="$store.state.device.darkmode"><i><fa icon="moon"/></i></template><template v-else><i><fa :icon="['far', 'moon']"/></i></template><span>{{ $t('darkmode') }}</span></p></li>
 				</ul>
 			</div>
diff --git a/src/models/user.ts b/src/models/user.ts
index 2ca1917dc..a5863de8d 100644
--- a/src/models/user.ts
+++ b/src/models/user.ts
@@ -99,6 +99,7 @@ export interface ILocalUser extends IUserBase {
 	lastUsedAt: Date;
 	isCat: boolean;
 	isAdmin?: boolean;
+	isModerator?: boolean;
 	isVerified?: boolean;
 	twoFactorSecret: string;
 	twoFactorEnabled: boolean;
@@ -125,6 +126,7 @@ export interface IRemoteUser extends IUserBase {
 	};
 	updatedAt: Date;
 	isAdmin: false;
+	isModerator: false;
 }
 
 export type IUser = ILocalUser | IRemoteUser;
diff --git a/src/server/api/call.ts b/src/server/api/call.ts
index 6252537c0..a3953d043 100644
--- a/src/server/api/call.ts
+++ b/src/server/api/call.ts
@@ -29,6 +29,10 @@ export default (endpoint: string, user: IUser, app: IApp, data: any, file?: any)
 		return rej('YOU_ARE_NOT_ADMIN');
 	}
 
+	if (ep.meta.requireModerator && !user.isAdmin && !user.isModerator) {
+		return rej('YOU_ARE_NOT_MODERATOR');
+	}
+
 	if (app && ep.meta.kind && !app.permission.some(p => p === ep.meta.kind)) {
 		return rej('PERMISSION_DENIED');
 	}
diff --git a/src/server/api/endpoints.ts b/src/server/api/endpoints.ts
index e764ac2e9..6765a63e9 100644
--- a/src/server/api/endpoints.ts
+++ b/src/server/api/endpoints.ts
@@ -30,6 +30,11 @@ export interface IEndpointMeta {
 	 */
 	requireAdmin?: boolean;
 
+	/**
+	 * 管理者またはモデレーターのみ使えるエンドポイントか否か
+	 */
+	requireModerator?: boolean;
+
 	/**
 	 * エンドポイントのリミテーションに関するやつ
 	 * 省略した場合はリミテーションは無いものとして解釈されます。
diff --git a/src/server/api/endpoints/admin/emoji/add.ts b/src/server/api/endpoints/admin/emoji/add.ts
index 4f9a84e67..91b5ff62d 100644
--- a/src/server/api/endpoints/admin/emoji/add.ts
+++ b/src/server/api/endpoints/admin/emoji/add.ts
@@ -8,7 +8,7 @@ export const meta = {
 	},
 
 	requireCredential: true,
-	requireAdmin: true,
+	requireModerator: true,
 
 	params: {
 		name: {
diff --git a/src/server/api/endpoints/admin/emoji/list.ts b/src/server/api/endpoints/admin/emoji/list.ts
index fd69fb0b2..428b274fe 100644
--- a/src/server/api/endpoints/admin/emoji/list.ts
+++ b/src/server/api/endpoints/admin/emoji/list.ts
@@ -8,7 +8,7 @@ export const meta = {
 	},
 
 	requireCredential: true,
-	requireAdmin: true,
+	requireModerator: true,
 
 	params: {
 		host: {
diff --git a/src/server/api/endpoints/admin/emoji/remove.ts b/src/server/api/endpoints/admin/emoji/remove.ts
index 32f1ced0c..1d6ed11b6 100644
--- a/src/server/api/endpoints/admin/emoji/remove.ts
+++ b/src/server/api/endpoints/admin/emoji/remove.ts
@@ -9,7 +9,7 @@ export const meta = {
 	},
 
 	requireCredential: true,
-	requireAdmin: true,
+	requireModerator: true,
 
 	params: {
 		id: {
diff --git a/src/server/api/endpoints/admin/emoji/update.ts b/src/server/api/endpoints/admin/emoji/update.ts
index d0c2e6daf..cbcc07fd4 100644
--- a/src/server/api/endpoints/admin/emoji/update.ts
+++ b/src/server/api/endpoints/admin/emoji/update.ts
@@ -9,7 +9,7 @@ export const meta = {
 	},
 
 	requireCredential: true,
-	requireAdmin: true,
+	requireModerator: true,
 
 	params: {
 		id: {
diff --git a/src/server/api/endpoints/admin/invite.ts b/src/server/api/endpoints/admin/invite.ts
index 056cb8aa7..ebfcb8445 100644
--- a/src/server/api/endpoints/admin/invite.ts
+++ b/src/server/api/endpoints/admin/invite.ts
@@ -8,7 +8,7 @@ export const meta = {
 	},
 
 	requireCredential: true,
-	requireAdmin: true,
+	requireModerator: true,
 
 	params: {}
 };
diff --git a/src/server/api/endpoints/admin/moderators/add.ts b/src/server/api/endpoints/admin/moderators/add.ts
new file mode 100644
index 000000000..4b4675c56
--- /dev/null
+++ b/src/server/api/endpoints/admin/moderators/add.ts
@@ -0,0 +1,45 @@
+import $ from 'cafy';
+import ID, { transform } from '../../../../../misc/cafy-id';
+import define from '../../../define';
+import User from '../../../../../models/user';
+
+export const meta = {
+	desc: {
+		'ja-JP': '指定したユーザーをモデレーターにします。',
+		'en-US': 'Mark a user as moderator.'
+	},
+
+	requireCredential: true,
+	requireAdmin: true,
+
+	params: {
+		userId: {
+			validator: $.type(ID),
+			transform: transform,
+			desc: {
+				'ja-JP': '対象のユーザーID',
+				'en-US': 'The user ID'
+			}
+		},
+	}
+};
+
+export default define(meta, (ps) => new Promise(async (res, rej) => {
+	const user = await User.findOne({
+		_id: ps.userId
+	});
+
+	if (user == null) {
+		return rej('user not found');
+	}
+
+	await User.update({
+		_id: user._id
+	}, {
+		$set: {
+			isModerator: true
+		}
+	});
+
+	res();
+}));
diff --git a/src/server/api/endpoints/admin/moderators/remove.ts b/src/server/api/endpoints/admin/moderators/remove.ts
new file mode 100644
index 000000000..2b9da61bb
--- /dev/null
+++ b/src/server/api/endpoints/admin/moderators/remove.ts
@@ -0,0 +1,45 @@
+import $ from 'cafy';
+import ID, { transform } from '../../../../../misc/cafy-id';
+import define from '../../../define';
+import User from '../../../../../models/user';
+
+export const meta = {
+	desc: {
+		'ja-JP': '指定したユーザーをモデレーター解除します。',
+		'en-US': 'Unmark a user as moderator.'
+	},
+
+	requireCredential: true,
+	requireAdmin: true,
+
+	params: {
+		userId: {
+			validator: $.type(ID),
+			transform: transform,
+			desc: {
+				'ja-JP': '対象のユーザーID',
+				'en-US': 'The user ID'
+			}
+		},
+	}
+};
+
+export default define(meta, (ps) => new Promise(async (res, rej) => {
+	const user = await User.findOne({
+		_id: ps.userId
+	});
+
+	if (user == null) {
+		return rej('user not found');
+	}
+
+	await User.update({
+		_id: user._id
+	}, {
+		$set: {
+			isModerator: false
+		}
+	});
+
+	res();
+}));
diff --git a/src/server/api/endpoints/admin/suspend-user.ts b/src/server/api/endpoints/admin/suspend-user.ts
index 0ad0aab74..5bbd387a2 100644
--- a/src/server/api/endpoints/admin/suspend-user.ts
+++ b/src/server/api/endpoints/admin/suspend-user.ts
@@ -10,7 +10,7 @@ export const meta = {
 	},
 
 	requireCredential: true,
-	requireAdmin: true,
+	requireModerator: true,
 
 	params: {
 		userId: {
diff --git a/src/server/api/endpoints/admin/unsuspend-user.ts b/src/server/api/endpoints/admin/unsuspend-user.ts
index 7c5eedee4..4b5324626 100644
--- a/src/server/api/endpoints/admin/unsuspend-user.ts
+++ b/src/server/api/endpoints/admin/unsuspend-user.ts
@@ -10,7 +10,7 @@ export const meta = {
 	},
 
 	requireCredential: true,
-	requireAdmin: true,
+	requireModerator: true,
 
 	params: {
 		userId: {
diff --git a/src/server/api/endpoints/admin/unverify-user.ts b/src/server/api/endpoints/admin/unverify-user.ts
index d749e002e..3e044ffed 100644
--- a/src/server/api/endpoints/admin/unverify-user.ts
+++ b/src/server/api/endpoints/admin/unverify-user.ts
@@ -10,7 +10,7 @@ export const meta = {
 	},
 
 	requireCredential: true,
-	requireAdmin: true,
+	requireModerator: true,
 
 	params: {
 		userId: {
diff --git a/src/server/api/endpoints/admin/update-meta.ts b/src/server/api/endpoints/admin/update-meta.ts
index 39d7ef86b..1e4ff959d 100644
--- a/src/server/api/endpoints/admin/update-meta.ts
+++ b/src/server/api/endpoints/admin/update-meta.ts
@@ -8,7 +8,7 @@ export const meta = {
 	},
 
 	requireCredential: true,
-	requireAdmin: true,
+	requireModerator: true,
 
 	params: {
 		broadcasts: {
diff --git a/src/server/api/endpoints/admin/verify-user.ts b/src/server/api/endpoints/admin/verify-user.ts
index 09efc2e80..996e044d1 100644
--- a/src/server/api/endpoints/admin/verify-user.ts
+++ b/src/server/api/endpoints/admin/verify-user.ts
@@ -10,7 +10,7 @@ export const meta = {
 	},
 
 	requireCredential: true,
-	requireAdmin: true,
+	requireModerator: true,
 
 	params: {
 		userId: {
diff --git a/src/server/api/endpoints/meta.ts b/src/server/api/endpoints/meta.ts
index f7c317990..b324b113c 100644
--- a/src/server/api/endpoints/meta.ts
+++ b/src/server/api/endpoints/meta.ts
@@ -84,7 +84,7 @@ export default define(meta, (ps, me) => new Promise(async (res, rej) => {
 		};
 	}
 
-	if (me && me.isAdmin) {
+	if (me && (me.isAdmin || me.isModerator)) {
 		response.hidedTags = instance.hidedTags;
 		response.recaptchaSecretKey = instance.recaptchaSecretKey;
 		response.proxyAccount = instance.proxyAccount;
diff --git a/src/server/api/endpoints/notes/delete.ts b/src/server/api/endpoints/notes/delete.ts
index a8f22ad40..aa11f7bf1 100644
--- a/src/server/api/endpoints/notes/delete.ts
+++ b/src/server/api/endpoints/notes/delete.ts
@@ -38,7 +38,7 @@ export default define(meta, (ps, user) => new Promise(async (res, rej) => {
 		return rej('note not found');
 	}
 
-	if (!user.isAdmin && !note.userId.equals(user._id)) {
+	if (!user.isAdmin && !user.isModerator && !note.userId.equals(user._id)) {
 		return rej('access denied');
 	}