diff --git a/README.md b/README.md
index d25b9d30d232514cfa01bfc38e539a87cf495f4d..2ea63123ff7ac5dff4adfc13e2a37698e1c0db41 100644
--- a/README.md
+++ b/README.md
@@ -96,6 +96,16 @@ Mostr is built with TypeScript and [Deno](https://deno.land/). It uses an SQLite
 
 To get up and running, install deno and run `deno task dev`.
 
+#### Configuration
+
+To map nostr keys to a friendly username on the ActivityPub side, you can configure a
+single alias:
+
+```sh
+ALIAS_NAME=mostr
+ALIAS_PUBKEY=6be38f8c63df7dbf84db7ec4a6e6fbbd8d19dca3b980efad18585c46f04b26f9
+```
+
 ## Why?
 
 See: https://soapbox.pub/blog/mostr-fediverse-nostr-bridge/
diff --git a/src/activitypub/controllers/actor.ts b/src/activitypub/controllers/actor.ts
index a3b25252683cd4587baef8665916247067dc2de4..15d41ecbba1ce7afcae9e03930643388da357a27 100644
--- a/src/activitypub/controllers/actor.ts
+++ b/src/activitypub/controllers/actor.ts
@@ -1,3 +1,4 @@
+import { Conf } from '@/config.ts';
 import { activityJson } from '@/activitypub/controllers/utils.ts';
 import { toActor } from '@/activitypub/transmute.ts';
 import { cipher } from '@/db.ts';
@@ -7,7 +8,8 @@ import { isProxyEvent } from '@/nostr/tags.ts';
 import type { AppController } from '@/app.ts';
 
 const actorController: AppController = async (c) => {
-  const pubkey = c.req.param('pubkey');
+  const pubkey_or_alias = c.req.param('pubkey');
+  const pubkey = pubkey_or_alias == Conf.aliasName ? Conf.aliasPubkey! : pubkey_or_alias;
 
   if (await cipher.getApId(pubkey).catch(() => undefined)) {
     return c.json({ error: 'Not found' }, 404);
diff --git a/src/activitypub/controllers/followers.ts b/src/activitypub/controllers/followers.ts
index 759db0441e0c854e39415dfd0506fa02b4c96b29..57577fe07f8392825ba28160c0e81dead6360508 100644
--- a/src/activitypub/controllers/followers.ts
+++ b/src/activitypub/controllers/followers.ts
@@ -1,3 +1,4 @@
+import { Conf } from '@/config.ts';
 import { activityJson } from '@/activitypub/controllers/utils.ts';
 import { followsDB } from '@/db.ts';
 import { url } from '@/utils/parse.ts';
@@ -5,18 +6,19 @@ import { url } from '@/utils/parse.ts';
 import type { AppController } from '@/app.ts';
 
 const followersController: AppController = async (c) => {
-  const pubkey = c.req.param('pubkey');
+  const pubkey_or_alias = c.req.param('pubkey');
+  const pubkey = pubkey_or_alias == Conf.aliasName ? Conf.aliasPubkey! : pubkey_or_alias;
   const items = await followsDB.getFollowers(pubkey);
 
   return activityJson(c, {
-    id: url(`/${pubkey}/followers`),
+    id: url(`/${pubkey_or_alias}/followers`),
     type: 'OrderedCollection',
     totalItems: items.length,
     first: {
-      id: url(`/${pubkey}/followers?page=1`),
+      id: url(`/${pubkey_or_alias}/followers?page=1`),
       type: 'OrderedCollectionPage',
       orderedItems: items,
-      partOf: url(`/${pubkey}/followers`),
+      partOf: url(`/${pubkey_or_alias}/followers`),
       totalItems: items.length,
     },
   });
diff --git a/src/activitypub/controllers/following.ts b/src/activitypub/controllers/following.ts
index ae36edc72ecb3188597235704c953caac3253bda..322678662a1a560e47016be7252f84700fef7faa 100644
--- a/src/activitypub/controllers/following.ts
+++ b/src/activitypub/controllers/following.ts
@@ -1,3 +1,4 @@
+import { Conf } from '@/config.ts';
 import { activityJson } from '@/activitypub/controllers/utils.ts';
 import { cipher } from '@/db.ts';
 import { fetchFollows } from '@/nostr/client.ts';
@@ -7,7 +8,8 @@ import { url } from '@/utils/parse.ts';
 import type { AppController } from '@/app.ts';
 
 const followingController: AppController = async (c) => {
-  const pubkey = c.req.param('pubkey');
+  const pubkey_or_alias = c.req.param('pubkey');
+  const pubkey = pubkey_or_alias == Conf.aliasName ? Conf.aliasPubkey! : pubkey_or_alias;
 
   const event = await fetchFollows(pubkey);
   const tags = event?.tags || [];
@@ -19,14 +21,14 @@ const followingController: AppController = async (c) => {
   )).filter(Boolean) as string[];
 
   return activityJson(c, {
-    id: url(`/${pubkey}/following`),
+    id: url(`/${pubkey_or_alias}/following`),
     type: 'OrderedCollection',
     totalItems: items.length,
     first: {
-      id: url(`/${pubkey}/following?page=1`),
+      id: url(`/${pubkey_or_alias}/following?page=1`),
       type: 'OrderedCollectionPage',
       orderedItems: items,
-      partOf: url(`/${pubkey}/following`),
+      partOf: url(`/${pubkey_or_alias}/following`),
       totalItems: items.length,
     },
   });
diff --git a/src/activitypub/transmute.ts b/src/activitypub/transmute.ts
index 8da64e06c6bff638e1745fa4d03f6f5908485676..c29e978551713073c3265598f35bf2fde25cbd07 100644
--- a/src/activitypub/transmute.ts
+++ b/src/activitypub/transmute.ts
@@ -59,15 +59,17 @@ const toActor = async (event: Event<0>): Promise<Actor> => {
     .filter(isEmojiTag)
     .map(toEmoji);
 
+  const userName = event.pubkey == Conf.aliasPubkey ? Conf.aliasName! : event.pubkey;
+
   return {
     type: 'Person',
-    id: url(`/users/${event.pubkey}`),
+    id: url(`/users/${userName}`),
     name: content?.name || '',
-    preferredUsername: event.pubkey,
-    inbox: url(`/users/${event.pubkey}/inbox`),
-    followers: url(`/users/${event.pubkey}/followers`),
-    following: url(`/users/${event.pubkey}/following`),
-    outbox: url(`/users/${event.pubkey}/outbox`),
+    preferredUsername: userName,
+    inbox: url(`/users/${userName}/inbox`),
+    followers: url(`/users/${userName}/followers`),
+    following: url(`/users/${userName}/following`),
+    outbox: url(`/users/${userName}/outbox`),
     icon: content.picture
       ? {
         type: 'Image',
@@ -84,8 +86,8 @@ const toActor = async (event: Event<0>): Promise<Actor> => {
     attachment: [],
     tag: emojis,
     publicKey: {
-      id: url(`/users/${event.pubkey}#main-key`),
-      owner: url(`/users/${event.pubkey}`),
+      id: url(`/users/${userName}#main-key`),
+      owner: url(`/users/${userName}`),
       publicKeyPem,
     },
     endpoints: {
@@ -186,16 +188,19 @@ const toNote = async (event: Event<1>): Promise<Note> => {
     .filter(isEmojiTag)
     .map(toEmoji);
 
+  const username = event.pubkey == Conf.aliasPubkey ? Conf.aliasName! : event.pubkey;
+
   return {
     type: 'Note',
     id: url(`/objects/${event.id}`),
-    attributedTo: url(`/users/${event.pubkey}`),
+
+    attributedTo: url(`/users/${username}`),
     content: cleanContent(parseMentions(linkified, imentions)),
     to: [
       AP_PUBLIC_URI,
       ...mentions.map((m) => m.href),
     ],
-    cc: [url(`/users/${event.pubkey}/followers`)],
+    cc: [url(`/users/${username}/followers`)],
     tag: [...mentions, ...hashtags, ...emojis],
     attachment: mediaLinks.map(renderAttachment),
     sensitive: Boolean(cwTag),
@@ -275,13 +280,15 @@ async function toAnnounce(event: Event<1> | Event<6>): Promise<Announce | undefi
   const objectId = await getQuoteUrl(event);
   if (!objectId) return;
 
+  const userName = event.pubkey == Conf.aliasPubkey ? Conf.aliasName! : event.pubkey;
+
   return {
     type: 'Announce',
     id: url(`/objects/${event.id}`),
     object: objectId,
-    actor: url(`/users/${event.pubkey}`),
+    actor: url(`/users/${userName}`),
     to: [AP_PUBLIC_URI],
-    cc: [url(`/users/${event.pubkey}/followers`)],
+    cc: [url(`/users/${userName}/followers`)],
     published: date(event.created_at),
     proxyOf: [toNoteProxy(event)],
   };
@@ -308,13 +315,15 @@ async function toLike(event: Event<7>): Promise<Like | undefined> {
   if (!reactedEvent) return;
   const mentions = await getTaggedUsers(event);
 
+  const userName = event.pubkey == Conf.aliasPubkey ? Conf.aliasName! : event.pubkey;
+
   return {
     type: 'Like',
     id: url(`/objects/${event.id}`),
     object: reactedEvent,
-    actor: url(`/users/${event.pubkey}`),
+    actor: url(`/users/${userName}`),
     to: [AP_PUBLIC_URI, ...mentions],
-    cc: [url(`/users/${event.pubkey}/followers`)],
+    cc: [url(`/users/${userName}/followers`)],
     proxyOf: [toNoteProxy(event)],
   };
 }
@@ -324,14 +333,16 @@ async function toEmojiReact(event: Event<7>): Promise<EmojiReact | undefined> {
   if (!reactedEvent) return;
   const mentions = await getTaggedUsers(event);
 
+  const userName = event.pubkey == Conf.aliasPubkey ? Conf.aliasName! : event.pubkey;
+
   return {
     type: 'EmojiReact',
     id: url(`/objects/${event.id}`),
     object: reactedEvent,
     content: event.content,
-    actor: url(`/users/${event.pubkey}`),
+    actor: url(`/users/${userName}`),
     to: [AP_PUBLIC_URI, ...mentions],
-    cc: [url(`/users/${event.pubkey}/followers`)],
+    cc: [url(`/users/${userName}/followers`)],
     proxyOf: [toNoteProxy(event)],
   };
 }
diff --git a/src/config.ts b/src/config.ts
index f6489639883fe201eb3abbd16e198d3bfcfb0ac8..e69fcbd560372618d6daec230ccd74b7a0a8686a 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -51,6 +51,12 @@ const Conf = {
   get signFetch(): boolean {
     return Deno.env.get('SIGN_FETCH') !== 'false';
   },
+  get aliasName(): string | undefined {
+    return Deno.env.get('ALIAS_NAME');
+  },
+  get aliasPubkey(): string | undefined {
+    return Deno.env.get('ALIAS_PUBKEY');
+  },
 };
 
 function deduplicate(items: string[]): string[] {
diff --git a/src/middleware/nip19-redirect.ts b/src/middleware/nip19-redirect.ts
index 81002783a738311c310a4699eef0bc359f839a07..c1e4a341bdff7b44d00e027f3fa3f59a6fcbbee0 100644
--- a/src/middleware/nip19-redirect.ts
+++ b/src/middleware/nip19-redirect.ts
@@ -1,3 +1,4 @@
+import { Conf } from '@/config.ts';
 import { nip19, Stickynotes } from '@/deps.ts';
 
 import type { AppMiddleware } from '@/app.ts';
@@ -6,7 +7,9 @@ export const nip19Redirect = (): AppMiddleware<'/users/:pubkey' | '/objects/:id'
   const console = new Stickynotes('middleware:nip19');
 
   return async (c, next) => {
-    const nostrId: string = c.req.param('pubkey') || c.req.param('id');
+    let nostrId: string = c.req.param('pubkey') || c.req.param('id');
+
+    nostrId = nostrId == Conf.aliasName ? Conf.aliasPubkey! : nostrId;
 
     try {
       const decoded = nip19.decode(nostrId);
diff --git a/src/middleware/redirect-humans.ts b/src/middleware/redirect-humans.ts
index c6aa42d41ac8b3672bfbc2f96a4752ec8d17ca1a..e7866e721f5662284d7074528494e0d1eb99787c 100644
--- a/src/middleware/redirect-humans.ts
+++ b/src/middleware/redirect-humans.ts
@@ -1,6 +1,7 @@
 import { isActivityContentType, redirectExternal } from '@/activitypub/controllers/utils.ts';
 import { nip19 } from '@/deps.ts';
 
+import { Conf } from '@/config.ts';
 import type { AppMiddleware } from '@/app.ts';
 
 /** Redirect to a human-readable page if visited from a web browser. */
@@ -12,8 +13,12 @@ export const redirectHumans = (): AppMiddleware<'/users/:pubkey' | '/objects/:id
       return next();
     }
 
+    let pubkey = c.req.param('pubkey');
+    pubkey = pubkey == Conf.aliasName ? Conf.aliasPubkey! : pubkey;
+
     const note = maybeEncodeNote(c.req.param('id'));
-    const npub = maybeEncodeNpub(c.req.param('pubkey'));
+    const npub = maybeEncodeNpub(pubkey);
+
     const result = note || npub;
 
     if (result) {
diff --git a/src/nostr/handler.ts b/src/nostr/handler.ts
index e62228c4e71103fdd501035bb6f4999ece269a98..cc33706a1d2d4e3e4ee081b9c221b69b3fe6464a 100644
--- a/src/nostr/handler.ts
+++ b/src/nostr/handler.ts
@@ -49,8 +49,9 @@ async function handleEvent(event: NostrEvent): Promise<void> {
 }
 
 async function handleEvent0(event: Event<0>) {
+  const userName = event.pubkey == Conf.aliasPubkey ? Conf.aliasName! : event.pubkey;
   const cache = await caches.open('web');
-  await cache.delete(new URL(`/users/${event.pubkey}`, Conf.localDomain));
+  await cache.delete(new URL(`/users/${userName}`, Conf.localDomain));
   return federate(wrapUpdate(await toActor(event)));
 }
 
@@ -71,8 +72,10 @@ async function handleEvent3(event: Event<3>) {
 
   const diff = await getFollowsDiff(event);
 
+  const userName = event.pubkey == Conf.aliasPubkey ? Conf.aliasName! : event.pubkey;
+
   for (const apId of diff.follow) {
-    const follow = buildFollow(url(`/users/${event.pubkey}`), apId);
+    const follow = buildFollow(url(`/users/${userName}`), apId);
     await Promise.all([
       federate(follow),
       followsDB.addFollow(event.pubkey, apId).catch((e) => console.error(e)),
diff --git a/src/nostr/transmute.ts b/src/nostr/transmute.ts
index 38f1372b57af30d67c5971c22e4e8647316da8a3..e6f50a0af68df284e07d58ca011290533f07b464 100644
--- a/src/nostr/transmute.ts
+++ b/src/nostr/transmute.ts
@@ -257,8 +257,9 @@ async function getObjectAuthor(activity: Like | EmojiReact): Promise<string | un
     return object.attributedTo;
   }
   // Less accurate, but should generally work.
-  const recipient = activity.to.find(isActorId);
+  let recipient = activity.to.find(isActorId);
   if (recipient) {
+    recipient = recipient == Conf.aliasName ? Conf.aliasPubkey! : recipient;
     return recipient;
   }
 }
diff --git a/src/nostr/transmute/content.ts b/src/nostr/transmute/content.ts
index 0b46269652009eeab057913a01950ff0debb138e..e46714c4ebee134f3e4930afc6ace991c36dbd62 100644
--- a/src/nostr/transmute/content.ts
+++ b/src/nostr/transmute/content.ts
@@ -1,4 +1,5 @@
 import { DOMParser, type Element, type HTMLDocument, nip19 } from '@/deps.ts';
+import { Conf } from '@/config.ts';
 import { toPubkey } from '../utils.ts';
 
 /** Get DOM object from HTML string. */
@@ -27,9 +28,10 @@ function processMentions(doc: HTMLDocument): Promise<string[]> {
   return [...nodes].reduce<Promise<string[]>>(async (result, node) => {
     const mention = node as Element;
     const apId = mention.getAttribute('href');
-    const pubkey = apId ? await toPubkey(apId) : undefined;
+    let pubkey = apId ? await toPubkey(apId) : undefined;
 
     if (pubkey) {
+      pubkey = pubkey == Conf.aliasName ? Conf.aliasPubkey! : pubkey;
       mention.innerHTML = `nostr:${nip19.npubEncode(pubkey)}`;
       return [...await result, apId!];
     }
diff --git a/src/nostr/utils.ts b/src/nostr/utils.ts
index 6cb9b865ed426b6e6ab2ed56e2e95477f5e4b423..f7e20e132d1a27e9a876ff079a9f27192a0473e3 100644
--- a/src/nostr/utils.ts
+++ b/src/nostr/utils.ts
@@ -4,7 +4,9 @@ import { UserSigner } from '@/nostr/UserSigner.ts';
 /** Convert ActivityPub ID into Nostr pubkey. */
 async function toPubkey(apId: string): Promise<string> {
   if (apId.startsWith(`${Conf.localDomain}/users/`)) {
-    return new URL(apId).pathname.split('/')[2];
+    const pubkey_or_alias = new URL(apId).pathname.split('/')[2];
+    const pubkey = pubkey_or_alias == Conf.aliasName ? Conf.aliasPubkey! : pubkey_or_alias;
+    return pubkey;
   } else {
     return await new UserSigner(apId).getPublicKey();
   }
diff --git a/src/utils/parse.ts b/src/utils/parse.ts
index 6513189c36ddcd904809fe0ee1ff06f98cde0e69..4a3fb5b693b158cc357f49cf9737343221fd976a 100644
--- a/src/utils/parse.ts
+++ b/src/utils/parse.ts
@@ -22,7 +22,9 @@ const apIdToPubkey = (apId: string): string => {
   if (!apId.startsWith(baseUrl)) throw apId;
 
   const { pathname } = new URL(apId);
-  return pathname.split('/')[2];
+  const pubkey_or_alias = pathname.split('/')[2];
+  const pubkey = pubkey_or_alias == Conf.aliasName ? Conf.aliasPubkey! : pubkey_or_alias;
+  return pubkey;
 };
 
 function isURL(value: unknown): value is string {
diff --git a/src/webfinger/controller.ts b/src/webfinger/controller.ts
index 059c0ef59ef51a3a8b45b3dd9015ad054b242623..7df540ee19b1f3665d67392a04549375818f8ebc 100644
--- a/src/webfinger/controller.ts
+++ b/src/webfinger/controller.ts
@@ -14,7 +14,7 @@ async function webfingerController(c: Context) {
     reqUrl.protocol = 'https:';
 
     const { pathname: acct } = new URL(c.req.query('resource')!);
-    const [username, host] = acct.split('@');
+    let [username, host] = acct.split('@');
 
     // Service actor
     if (username === host && [localDomainHost, serviceActorHost].includes(host)) {
@@ -26,6 +26,8 @@ async function webfingerController(c: Context) {
       return c.json({ error: 'Invalid host' }, 400);
     }
 
+    username = username == Conf.aliasName ? Conf.aliasPubkey! : username;
+
     let pubkey: string | undefined;
 
     if (n.id().safeParse(username).success) {
diff --git a/src/webfinger/transmute.ts b/src/webfinger/transmute.ts
index 90f9305d42c565dc5d97f150b3fbce5950b8a63a..6988e3ae43ccf7046a3e842482863098f2098bd3 100644
--- a/src/webfinger/transmute.ts
+++ b/src/webfinger/transmute.ts
@@ -7,10 +7,11 @@ import type { Webfinger } from './webfingerSchema.ts';
 /** Present Nostr user on Webfinger. */
 const toWebfinger = (event: Event<0>): Webfinger => {
   const { host } = new URL(Conf.localDomain);
-  const apId = url(`/users/${event.pubkey}`);
+  const username = event.pubkey == Conf.aliasPubkey ? Conf.aliasName! : event.pubkey;
+  const apId = url(`/users/${username}`);
 
   return {
-    subject: `acct:${event.pubkey}@${host}`,
+    subject: `acct:${username}@${host}`,
     aliases: [apId],
     links: [
       {