diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 1ac8d6f49b..7f2c2a2d95 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -81,8 +81,6 @@ manageLists: "リストの管理"
 error: "問題が発生しました"
 retry: "再試行"
 enterListName: "リスト名を入力"
-renameList: "リスト名を変更"
-deleteList: "リストを削除"
 privacy: "プライバシー"
 makeFollowManuallyApprove: "フォローを承認制にする"
 defaultNoteVisibility: "デフォルトの公開範囲"
@@ -362,6 +360,14 @@ markAsReadAllTalkMessages: "すべてのトークを既読にする"
 help: "ヘルプ"
 inputMessageHere: "ここにメッセージを入力"
 close: "閉じる"
+groups: "グループ"
+createGroup: "グループを作成"
+ownedGroups: "所有グループ"
+joinedGroups: "参加しているグループ"
+invite: "招待"
+invites: "招待"
+groupName: "グループ名"
+members: "メンバー"
 
 _2fa:
   alreadyRegistered: "既に設定は完了しています。"
diff --git a/src/client/app.vue b/src/client/app.vue
index e260d3070c..081f4f22d3 100644
--- a/src/client/app.vue
+++ b/src/client/app.vue
@@ -409,6 +409,11 @@ export default Vue.extend({
 					text: this.$t('lists'),
 					to: '/my/lists',
 					icon: faListUl,
+				}, {
+					type: 'link',
+					text: this.$t('groups'),
+					to: '/my/groups',
+					icon: faUsers,
 				}, {
 					type: 'link',
 					text: this.$t('antennas'),
diff --git a/src/client/pages/my-groups/group.vue b/src/client/pages/my-groups/group.vue
new file mode 100644
index 0000000000..67f5f9754f
--- /dev/null
+++ b/src/client/pages/my-groups/group.vue
@@ -0,0 +1,194 @@
+<template>
+<div class="mk-group-page">
+	<portal to="icon"><fa :icon="faUsers"/></portal>
+	<portal to="title">{{ group.name }}</portal>
+
+	<transition name="zoom" mode="out-in">
+		<div v-if="group" class="_card">
+			<div class="_content">
+				<mk-button inline @click="renameGroup()">{{ $t('rename') }}</mk-button>
+				<mk-button inline @click="deleteGroup()">{{ $t('delete') }}</mk-button>
+			</div>
+		</div>
+	</transition>
+
+	<transition name="zoom" mode="out-in">
+		<div v-if="group" class="_card members">
+			<div class="_title">{{ $t('members') }}</div>
+			<div class="_content">
+				<div class="users">
+					<div class="user" v-for="user in users" :key="user.id">
+						<mk-avatar :user="user" class="avatar"/>
+						<div class="body">
+							<mk-user-name :user="user" class="name"/>
+							<mk-acct :user="user" class="acct"/>
+						</div>
+						<div class="action">
+							<button class="_button" @click="removeUser(user)"><fa :icon="faTimes"/></button>
+						</div>
+					</div>
+				</div>
+			</div>
+			<div class="_footer">
+				<mk-button inline @click="invite()">{{ $t('invite') }}</mk-button>
+			</div>
+		</div>
+	</transition>
+</div>
+</template>
+
+<script lang="ts">
+import Vue from 'vue';
+import { faTimes, faUsers } from '@fortawesome/free-solid-svg-icons';
+import i18n from '../../i18n';
+import Progress from '../../scripts/loading';
+import MkButton from '../../components/ui/button.vue';
+import MkUserSelect from '../../components/user-select.vue';
+
+export default Vue.extend({
+	i18n,
+
+	metaInfo() {
+		return {
+			title: this.group ? `${this.group.name} | ${this.$t('manageGroups')}` : this.$t('manageGroups')
+		};
+	},
+
+	components: {
+		MkButton
+	},
+
+	data() {
+		return {
+			group: null,
+			users: [],
+			faTimes, faUsers
+		};
+	},
+
+	watch: {
+		$route: 'fetch'
+	},
+
+	created() {
+		this.fetch();
+	},
+
+	methods: {
+		fetch() {
+			Progress.start();
+			this.$root.api('users/groups/show', {
+				groupId: this.$route.params.group
+			}).then(group => {
+				this.group = group;
+				this.$root.api('users/show', {
+					userIds: this.group.userIds
+				}).then(users => {
+					this.users = users;
+					Progress.done();
+				});
+			});
+		},
+
+		invite() {
+			this.$root.new(MkUserSelect, {}).$once('selected', user => {
+				this.$root.api('users/groups/invite', {
+					groupId: this.group.id,
+					userId: user.id
+				}).then(() => {
+					this.$root.dialog({
+						type: 'success',
+						iconOnly: true, autoClose: true
+					});
+				}).catch(e => {
+					this.$root.dialog({
+						type: 'error',
+						text: e
+					});
+				});
+			});
+		},
+
+		removeUser(user) {
+			this.$root.api('users/groups/pull', {
+				groupId: this.group.id,
+				userId: user.id
+			}).then(() => {
+				this.users = this.users.filter(x => x.id !== user.id);
+			});
+		},
+
+		async renameGroup() {
+			const { canceled, result: name } = await this.$root.dialog({
+				title: this.$t('groupName'),
+				input: {
+					default: this.group.name
+				}
+			});
+			if (canceled) return;
+
+			await this.$root.api('users/groups/update', {
+				groupId: this.group.id,
+				name: name
+			});
+
+			this.group.name = name;
+		},
+
+		async deleteGroup() {
+			const { canceled } = await this.$root.dialog({
+				type: 'warning',
+				text: this.$t('removeAreYouSure', { x: this.group.name }),
+				showCancelButton: true
+			});
+			if (canceled) return;
+
+			await this.$root.api('users/groups/delete', {
+				groupId: this.group.id
+			});
+			this.$root.dialog({
+				type: 'success',
+				iconOnly: true, autoClose: true
+			});
+			this.$router.push('/my/groups');
+		}
+	}
+});
+</script>
+
+<style lang="scss" scoped>
+.mk-group-page {
+	> .members {
+		> ._content {
+			max-height: 400px;
+			overflow: auto;
+
+			> .users {
+				> .user {
+					display: flex;
+					align-items: center;
+
+					> .avatar {
+						width: 50px;
+						height: 50px;
+					}
+
+					> .body {
+						flex: 1;
+						padding: 8px;
+
+						> .name {
+							display: block;
+							font-weight: bold;
+						}
+
+						> .acct {
+							opacity: 0.5;
+						}
+					}
+				}
+			}
+		}
+	}
+}
+</style>
diff --git a/src/client/pages/my-groups/index.vue b/src/client/pages/my-groups/index.vue
new file mode 100644
index 0000000000..733c481aa6
--- /dev/null
+++ b/src/client/pages/my-groups/index.vue
@@ -0,0 +1,99 @@
+<template>
+<div class="">
+	<portal to="icon"><fa :icon="faUsers"/></portal>
+	<portal to="title">{{ $t('groups') }}</portal>
+
+	<mk-button @click="create" primary style="margin: 0 auto var(--margin) auto;"><fa :icon="faPlus"/> {{ $t('createGroup') }}</mk-button>
+
+	<mk-container :body-togglable="true">
+		<template #header><fa :icon="faUsers"/> {{ $t('ownedGroups') }}</template>
+		<mk-pagination :pagination="ownedPagination" #default="{items}" ref="owned">
+			<div class="" v-for="group in items" :key="group.id">
+				<router-link :to="`/my/groups/${ group.id }`">{{ group.name }}</router-link>
+			</div>
+		</mk-pagination>
+	</mk-container>
+
+	<mk-container :body-togglable="true">
+		<template #header><fa :icon="faEnvelopeOpenText"/> {{ $t('invites') }}</template>
+		<mk-pagination :pagination="invitePagination" #default="{items}">
+			<div class="" v-for="invite in items" :key="invite.id">
+				<div class="name">{{ invite.group.name }}</div>
+				<x-avatars :user-ids="invite.group.userIds" style="margin-top:8px;"/>
+				<ui-horizon-group>
+					<ui-button @click="acceptInvite(invite)"><fa :icon="faCheck"/> {{ $t('accept') }}</ui-button>
+					<ui-button @click="rejectInvite(invite)"><fa :icon="faBan"/> {{ $t('reject') }}</ui-button>
+				</ui-horizon-group>
+			</div>
+		</mk-pagination>
+	</mk-container>
+
+	<mk-container :body-togglable="true">
+		<template #header><fa :icon="faUsers"/> {{ $t('joinedGroups') }}</template>
+		<mk-pagination :pagination="joinedPagination" #default="{items}">
+			<div class="" v-for="group in items" :key="group.id">
+				<div>{{ group.name }}</div>
+			</div>
+		</mk-pagination>
+	</mk-container>
+</div>
+</template>
+
+<script lang="ts">
+import Vue from 'vue';
+import { faUsers, faPlus, faEnvelopeOpenText } from '@fortawesome/free-solid-svg-icons';
+import MkPagination from '../../components/ui/pagination.vue';
+import MkButton from '../../components/ui/button.vue';
+import MkContainer from '../../components/ui/container.vue';
+
+export default Vue.extend({
+	metaInfo() {
+		return {
+			title: this.$t('groups') as string,
+		};
+	},
+
+	components: {
+		MkPagination,
+		MkButton,
+		MkContainer,
+	},
+
+	data() {
+		return {
+			ownedPagination: {
+				endpoint: 'users/groups/owned',
+				limit: 10,
+			},
+			joinedPagination: {
+				endpoint: 'users/groups/joined',
+				limit: 10,
+			},
+			invitePagination: {
+				endpoint: 'i/user-group-invites',
+				limit: 10,
+			},
+			faUsers, faPlus, faEnvelopeOpenText
+		};
+	},
+
+	methods: {
+		async create() {
+			const { canceled, result: name } = await this.$root.dialog({
+				title: this.$t('groupName'),
+				input: true
+			});
+			if (canceled) return;
+			await this.$root.api('users/groups/create', { name: name });
+			this.$refs.owned.reload();
+			this.$root.dialog({
+				type: 'success',
+				iconOnly: true, autoClose: true
+			});
+		},
+	}
+});
+</script>
+
+<style lang="scss" scoped>
+</style>
diff --git a/src/client/pages/my-lists/index.vue b/src/client/pages/my-lists/index.vue
index 505998209e..c3f6d9c774 100644
--- a/src/client/pages/my-lists/index.vue
+++ b/src/client/pages/my-lists/index.vue
@@ -62,7 +62,7 @@ export default Vue.extend({
 <style lang="scss" scoped>
 .qkcjvfiv {
 	> .add {
-		margin: 0 auto 16px auto;
+		margin: 0 auto var(--margin) auto;
 	}
 
 	> .lists {
diff --git a/src/client/pages/my-lists/list.vue b/src/client/pages/my-lists/list.vue
index ded79b89c7..cf85a80ccb 100644
--- a/src/client/pages/my-lists/list.vue
+++ b/src/client/pages/my-lists/list.vue
@@ -1,11 +1,23 @@
 <template>
 <div class="mk-list-page">
+	<portal to="icon"><fa :icon="faListUl"/></portal>
+	<portal to="title">{{ list.name }}</portal>
+
 	<transition name="zoom" mode="out-in">
-		<div v-if="list" :key="list.id" class="_card list">
-			<div class="_title">{{ list.name }}</div>
+		<div v-if="list" class="_card">
+			<div class="_content">
+				<mk-button inline @click="renameList()">{{ $t('rename') }}</mk-button>
+				<mk-button inline @click="deleteList()">{{ $t('delete') }}</mk-button>
+			</div>
+		</div>
+	</transition>
+
+	<transition name="zoom" mode="out-in">
+		<div v-if="list" class="_card members">
+			<div class="_title">{{ $t('members') }}</div>
 			<div class="_content">
 				<div class="users">
-					<div class="user" v-for="(user, i) in users" :key="user.id">
+					<div class="user" v-for="user in users" :key="user.id">
 						<mk-avatar :user="user" class="avatar"/>
 						<div class="body">
 							<mk-user-name :user="user" class="name"/>
@@ -18,8 +30,7 @@
 				</div>
 			</div>
 			<div class="_footer">
-				<mk-button inline @click="renameList()">{{ $t('renameList') }}</mk-button>
-				<mk-button inline @click="deleteList()">{{ $t('deleteList') }}</mk-button>
+				<mk-button inline @click="addUser()">{{ $t('addUser') }}</mk-button>
 			</div>
 		</div>
 	</transition>
@@ -28,10 +39,11 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import { faTimes } from '@fortawesome/free-solid-svg-icons';
+import { faTimes, faListUl } from '@fortawesome/free-solid-svg-icons';
 import i18n from '../../i18n';
 import Progress from '../../scripts/loading';
 import MkButton from '../../components/ui/button.vue';
+import MkUserSelect from '../../components/user-select.vue';
 
 export default Vue.extend({
 	i18n,
@@ -50,7 +62,7 @@ export default Vue.extend({
 		return {
 			list: null,
 			users: [],
-			faTimes
+			faTimes, faListUl
 		};
 	},
 
@@ -78,6 +90,26 @@ export default Vue.extend({
 			});
 		},
 
+		addUser() {
+			this.$root.new(MkUserSelect, {}).$once('selected', user => {
+				this.$root.api('users/lists/push', {
+					listId: this.list.id,
+					userId: user.id
+				}).then(() => {
+					this.users.push(user);
+					this.$root.dialog({
+						type: 'success',
+						iconOnly: true, autoClose: true
+					});
+				}).catch(e => {
+					this.$root.dialog({
+						type: 'error',
+						text: e
+					});
+				});
+			});
+		},
+
 		removeUser(user) {
 			this.$root.api('users/lists/pull', {
 				listId: this.list.id,
@@ -107,7 +139,7 @@ export default Vue.extend({
 		async deleteList() {
 			const { canceled } = await this.$root.dialog({
 				type: 'warning',
-				text: this.$t('deleteListConfirm', { list: this.list.name }),
+				text: this.$t('removeAreYouSure', { x: this.list.name }),
 				showCancelButton: true
 			});
 			if (canceled) return;
@@ -127,7 +159,7 @@ export default Vue.extend({
 
 <style lang="scss" scoped>
 .mk-list-page {
-	> .list {
+	> .members {
 		> ._content {
 			max-height: 400px;
 			overflow: auto;
diff --git a/src/client/router.ts b/src/client/router.ts
index f32673f432..949eb1ccbd 100644
--- a/src/client/router.ts
+++ b/src/client/router.ts
@@ -40,6 +40,8 @@ export const router = new VueRouter({
 		{ path: '/my/follow-requests', component: page('follow-requests') },
 		{ path: '/my/lists', component: page('my-lists/index') },
 		{ path: '/my/lists/:list', component: page('my-lists/list') },
+		{ path: '/my/groups', component: page('my-groups/index') },
+		{ path: '/my/groups/:group', component: page('my-groups/group') },
 		{ path: '/my/antennas', component: page('my-antennas/index') },
 		{ path: '/instance', component: page('instance/index') },
 		{ path: '/instance/emojis', component: page('instance/emojis') },