diff --git a/locales/en-US.yml b/locales/en-US.yml
index 89f8236c7..31741af15 100644
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@@ -992,6 +992,7 @@ admin/views/instance.vue:
   instance-name: "Instance name"
   instance-description: "Instance description"
   host: "Host"
+  logo-url: "Logo image URL"
   banner-url: "Banner image URL"
   error-image-url: "Error image URL"
   languages: "Language of this instance"
diff --git a/src/client/app/admin/views/instance.vue b/src/client/app/admin/views/instance.vue
index 5a29da034..4e7d59b8e 100644
--- a/src/client/app/admin/views/instance.vue
+++ b/src/client/app/admin/views/instance.vue
@@ -6,6 +6,7 @@
 			<ui-input :value="host" readonly>{{ $t('host') }}</ui-input>
 			<ui-input v-model="name">{{ $t('instance-name') }}</ui-input>
 			<ui-textarea v-model="description">{{ $t('instance-description') }}</ui-textarea>
+			<ui-input v-model="logoUrl"><i slot="icon"><fa icon="link"/></i>{{ $t('logo-url') }}</ui-input>
 			<ui-input v-model="bannerUrl"><i slot="icon"><fa icon="link"/></i>{{ $t('banner-url') }}</ui-input>
 			<ui-input v-model="errorImageUrl"><i slot="icon"><fa icon="link"/></i>{{ $t('error-image-url') }}</ui-input>
 			<ui-input v-model="languages"><i slot="icon"><fa icon="language"/></i>{{ $t('languages') }}<span slot="desc">{{ $t('languages-desc') }}</span></ui-input>
@@ -149,6 +150,7 @@ export default Vue.extend({
 			maintainerEmail: null,
 			disableRegistration: false,
 			disableLocalTimeline: false,
+			logoUrl: null,
 			bannerUrl: null,
 			errorImageUrl: null,
 			name: null,
@@ -196,6 +198,7 @@ export default Vue.extend({
 			this.maintainerEmail = meta.maintainer.email;
 			this.disableRegistration = meta.disableRegistration;
 			this.disableLocalTimeline = meta.disableLocalTimeline;
+			this.logoUrl = meta.logoUrl;
 			this.bannerUrl = meta.bannerUrl;
 			this.errorImageUrl = meta.errorImageUrl;
 			this.name = meta.name;
@@ -253,6 +256,7 @@ export default Vue.extend({
 				maintainerEmail: this.maintainerEmail,
 				disableRegistration: this.disableRegistration,
 				disableLocalTimeline: this.disableLocalTimeline,
+				logoUrl: this.logoUrl,
 				bannerUrl: this.bannerUrl,
 				errorImageUrl: this.errorImageUrl,
 				name: this.name,
diff --git a/src/client/app/desktop/views/pages/welcome.vue b/src/client/app/desktop/views/pages/welcome.vue
index 8abadf2c6..0aa864546 100644
--- a/src/client/app/desktop/views/pages/welcome.vue
+++ b/src/client/app/desktop/views/pages/welcome.vue
@@ -35,7 +35,7 @@
 						<span class="signin" @click="signin">{{ $t('signin') }}</span>
 					</p>
 
-					<img src="/assets/ai.png" alt="" title="藍" class="char">
+					<img :src="meta.logoUrl || '/assets/ai.png'" alt="" title="藍" class="char">
 				</div>
 			</div>
 
diff --git a/src/misc/fetch-meta.ts b/src/misc/fetch-meta.ts
index a49e4dbe7..138646e88 100644
--- a/src/misc/fetch-meta.ts
+++ b/src/misc/fetch-meta.ts
@@ -19,6 +19,7 @@ const defaultMeta: any = {
 	enableExternalUserRecommendation: false,
 	externalUserRecommendationEngine: 'https://vinayaka.distsn.org/cgi-bin/vinayaka-user-match-misskey-api.cgi?{{host}}+{{user}}+{{limit}}+{{offset}}',
 	externalUserRecommendationTimeout: 300000,
+	logoUrl: '/assets/ai.png',
 	errorImageUrl: 'https://ai.misskey.xyz/aiart/yubitun.png',
 	enableServiceWorker: false
 };
diff --git a/src/models/meta.ts b/src/models/meta.ts
index fd07438a8..b68ec43f1 100644
--- a/src/models/meta.ts
+++ b/src/models/meta.ts
@@ -185,6 +185,7 @@ export type IMeta = {
 	disableRegistration?: boolean;
 	disableLocalTimeline?: boolean;
 	hidedTags?: string[];
+	logoUrl?: string;
 	bannerUrl?: string;
 	errorImageUrl?: string;
 
diff --git a/src/server/api/endpoints/admin/update-meta.ts b/src/server/api/endpoints/admin/update-meta.ts
index 6ceb2a98d..f84192792 100644
--- a/src/server/api/endpoints/admin/update-meta.ts
+++ b/src/server/api/endpoints/admin/update-meta.ts
@@ -39,6 +39,13 @@ export const meta = {
 			}
 		},
 
+		logoUrl: {
+			validator: $.str.optional.nullable,
+			desc: {
+				'ja-JP': 'インスタンスロゴ画像のURL'
+			}
+		},
+
 		bannerUrl: {
 			validator: $.str.optional.nullable,
 			desc: {
@@ -328,6 +335,10 @@ export default define(meta, (ps) => new Promise(async (res, rej) => {
 		set.hidedTags = ps.hidedTags;
 	}
 
+	if (ps.logoUrl !== undefined) {
+		set.logoUrl = ps.logoUrl;
+	}
+
 	if (ps.bannerUrl !== undefined) {
 		set.bannerUrl = ps.bannerUrl;
 	}
diff --git a/src/server/api/endpoints/meta.ts b/src/server/api/endpoints/meta.ts
index d406f59dc..641c7728f 100644
--- a/src/server/api/endpoints/meta.ts
+++ b/src/server/api/endpoints/meta.ts
@@ -65,6 +65,7 @@ export default define(meta, (ps, me) => new Promise(async (res, rej) => {
 		enableRecaptcha: instance.enableRecaptcha,
 		recaptchaSiteKey: instance.recaptchaSiteKey,
 		swPublickey: instance.swPublicKey,
+		logoUrl: instance.logoUrl,
 		bannerUrl: instance.bannerUrl,
 		errorImageUrl: instance.errorImageUrl,
 		maxNoteTextLength: instance.maxNoteTextLength,