diff --git a/common/package.json b/common/package.json
index 6f0f5b29..c324379f 100644
--- a/common/package.json
+++ b/common/package.json
@@ -10,6 +10,7 @@
   "dependencies": {
     "@tiptap/extension-image": "2.0.0-beta.30",
     "@tiptap/extension-link": "2.0.0-beta.43",
+    "@tiptap/extension-mention": "2.0.0-beta.102",
     "@tiptap/starter-kit": "2.0.0-beta.190",
     "lodash": "4.17.21"
   },
diff --git a/common/util/parse.ts b/common/util/parse.ts
index cdaa6a6c..cacd0862 100644
--- a/common/util/parse.ts
+++ b/common/util/parse.ts
@@ -20,6 +20,7 @@ import { Text } from '@tiptap/extension-text'
 // other tiptap extensions
 import { Image } from '@tiptap/extension-image'
 import { Link } from '@tiptap/extension-link'
+import { Mention } from '@tiptap/extension-mention'
 import Iframe from './tiptap-iframe'
 
 export function parseTags(text: string) {
@@ -81,9 +82,9 @@ export const exhibitExts = [
 
   Image,
   Link,
+  Mention,
   Iframe,
 ]
-// export const exhibitExts = [StarterKit as unknown as Extension, Image]
 
 export function richTextToString(text?: JSONContent) {
   return !text ? '' : generateText(text, exhibitExts)
diff --git a/functions/package.json b/functions/package.json
index f8657516..fe63dc4e 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -27,6 +27,7 @@
     "@tiptap/core": "2.0.0-beta.181",
     "@tiptap/extension-image": "2.0.0-beta.30",
     "@tiptap/extension-link": "2.0.0-beta.43",
+    "@tiptap/extension-mention": "2.0.0-beta.102",
     "@tiptap/starter-kit": "2.0.0-beta.190",
     "firebase-admin": "10.0.0",
     "firebase-functions": "3.21.2",
diff --git a/web/components/editor.tsx b/web/components/editor.tsx
index 4dfddac9..963cea7e 100644
--- a/web/components/editor.tsx
+++ b/web/components/editor.tsx
@@ -11,6 +11,7 @@ import {
 import StarterKit from '@tiptap/starter-kit'
 import { Image } from '@tiptap/extension-image'
 import { Link } from '@tiptap/extension-link'
+import { Mention } from '@tiptap/extension-mention'
 import clsx from 'clsx'
 import { useEffect, useState } from 'react'
 import { Linkify } from './linkify'
@@ -19,6 +20,9 @@ import { useMutation } from 'react-query'
 import { exhibitExts } from 'common/util/parse'
 import { FileUploadButton } from './file-upload-button'
 import { linkClass } from './site-link'
+import { useUsers } from 'web/hooks/use-users'
+import { mentionSuggestion } from './editor/mention-suggestion'
+import { DisplayMention } from './editor/mention'
 import Iframe from 'common/util/tiptap-iframe'
 import { CodeIcon, PhotographIcon } from '@heroicons/react/solid'
 import { Modal } from './layout/modal'
@@ -40,33 +44,41 @@ export function useTextEditor(props: {
 }) {
   const { placeholder, max, defaultValue = '', disabled } = props
 
+  const users = useUsers()
+
   const editorClass = clsx(
     proseClass,
     'min-h-[6em] resize-none outline-none border-none pt-3 px-4 focus:ring-0'
   )
 
-  const editor = useEditor({
-    editorProps: { attributes: { class: editorClass } },
-    extensions: [
-      StarterKit.configure({
-        heading: { levels: [1, 2, 3] },
-      }),
-      Placeholder.configure({
-        placeholder,
-        emptyEditorClass:
-          'before:content-[attr(data-placeholder)] before:text-slate-500 before:float-left before:h-0',
-      }),
-      CharacterCount.configure({ limit: max }),
-      Image,
-      Link.configure({
-        HTMLAttributes: {
-          class: clsx('no-underline !text-indigo-700', linkClass),
-        },
-      }),
-      Iframe,
-    ],
-    content: defaultValue,
-  })
+  const editor = useEditor(
+    {
+      editorProps: { attributes: { class: editorClass } },
+      extensions: [
+        StarterKit.configure({
+          heading: { levels: [1, 2, 3] },
+        }),
+        Placeholder.configure({
+          placeholder,
+          emptyEditorClass:
+            'before:content-[attr(data-placeholder)] before:text-slate-500 before:float-left before:h-0',
+        }),
+        CharacterCount.configure({ limit: max }),
+        Image,
+        Link.configure({
+          HTMLAttributes: {
+            class: clsx('no-underline !text-indigo-700', linkClass),
+          },
+        }),
+        DisplayMention.configure({
+          suggestion: mentionSuggestion(users),
+        }),
+        Iframe,
+      ],
+      content: defaultValue,
+    },
+    [!users.length] // passed as useEffect dependency. (re-render editor when users load, to update mention menu)
+  )
 
   const upload = useUploadMutation(editor)
 
@@ -261,7 +273,11 @@ function RichContent(props: { content: JSONContent | string }) {
   const { content } = props
   const editor = useEditor({
     editorProps: { attributes: { class: proseClass } },
-    extensions: exhibitExts,
+    extensions: [
+      // replace tiptap's Mention with ours, to add style and link
+      ...exhibitExts.filter((ex) => ex.name !== Mention.name),
+      DisplayMention,
+    ],
     content,
     editable: false,
   })
diff --git a/web/components/editor/mention-list.tsx b/web/components/editor/mention-list.tsx
new file mode 100644
index 00000000..f9e67daf
--- /dev/null
+++ b/web/components/editor/mention-list.tsx
@@ -0,0 +1,62 @@
+import { SuggestionProps } from '@tiptap/suggestion'
+import clsx from 'clsx'
+import { User } from 'common/user'
+import { forwardRef, useEffect, useImperativeHandle, useState } from 'react'
+import { Avatar } from '../avatar'
+
+// copied from https://tiptap.dev/api/nodes/mention#usage
+export const MentionList = forwardRef((props: SuggestionProps<User>, ref) => {
+  const { items: users, command } = props
+
+  const [selectedIndex, setSelectedIndex] = useState(0)
+  useEffect(() => setSelectedIndex(0), [users])
+
+  const submitUser = (index: number) => {
+    const user = users[index]
+    if (user) command({ id: user.id, label: user.username } as any)
+  }
+
+  const onUp = () =>
+    setSelectedIndex((i) => (i + users.length - 1) % users.length)
+  const onDown = () => setSelectedIndex((i) => (i + 1) % users.length)
+  const onEnter = () => submitUser(selectedIndex)
+
+  useImperativeHandle(ref, () => ({
+    onKeyDown: ({ event }: any) => {
+      if (event.key === 'ArrowUp') {
+        onUp()
+        return true
+      }
+      if (event.key === 'ArrowDown') {
+        onDown()
+        return true
+      }
+      if (event.key === 'Enter') {
+        onEnter()
+        return true
+      }
+      return false
+    },
+  }))
+
+  return (
+    <div className="w-42 absolute z-10 overflow-x-hidden rounded-md bg-white py-1 shadow-lg ring-1 ring-black ring-opacity-5 focus:outline-none">
+      {!users.length ? (
+        <span className="m-1 whitespace-nowrap">No results...</span>
+      ) : (
+        users.map((user, i) => (
+          <button
+            className={clsx(
+              'flex h-8 w-full cursor-pointer select-none items-center gap-2 truncate px-4',
+              selectedIndex === i ? 'bg-indigo-500 text-white' : 'text-gray-900'
+            )}
+            onClick={() => submitUser(i)}
+          >
+            <Avatar avatarUrl={user.avatarUrl} size="xs" />
+            {user.username}
+          </button>
+        ))
+      )}
+    </div>
+  )
+})
diff --git a/web/components/editor/mention-suggestion.ts b/web/components/editor/mention-suggestion.ts
new file mode 100644
index 00000000..e21789c9
--- /dev/null
+++ b/web/components/editor/mention-suggestion.ts
@@ -0,0 +1,72 @@
+import type { MentionOptions } from '@tiptap/extension-mention'
+import { ReactRenderer } from '@tiptap/react'
+import { User } from 'common/user'
+import { searchInAny } from 'common/util/parse'
+import { orderBy } from 'lodash'
+import tippy from 'tippy.js'
+import { MentionList } from './mention-list'
+
+type Suggestion = MentionOptions['suggestion']
+
+const beginsWith = (text: string, query: string) =>
+  text.toLocaleLowerCase().startsWith(query.toLocaleLowerCase())
+
+// copied from https://tiptap.dev/api/nodes/mention#usage
+export const mentionSuggestion = (users: User[]): Suggestion => ({
+  items: ({ query }) =>
+    orderBy(
+      users.filter((u) => searchInAny(query, u.username, u.name)),
+      [
+        (u) => [u.name, u.username].some((s) => beginsWith(s, query)),
+        'followerCountCached',
+      ],
+      ['desc', 'desc']
+    ).slice(0, 5),
+  render: () => {
+    let component: ReactRenderer
+    let popup: ReturnType<typeof tippy>
+    return {
+      onStart: (props) => {
+        component = new ReactRenderer(MentionList, {
+          props,
+          editor: props.editor,
+        })
+        if (!props.clientRect) {
+          return
+        }
+
+        popup = tippy('body', {
+          getReferenceClientRect: props.clientRect as any,
+          appendTo: () => document.body,
+          content: component.element,
+          showOnCreate: true,
+          interactive: true,
+          trigger: 'manual',
+          placement: 'bottom-start',
+        })
+      },
+      onUpdate(props) {
+        component.updateProps(props)
+
+        if (!props.clientRect) {
+          return
+        }
+
+        popup[0].setProps({
+          getReferenceClientRect: props.clientRect as any,
+        })
+      },
+      onKeyDown(props) {
+        if (props.event.key === 'Escape') {
+          popup[0].hide()
+          return true
+        }
+        return (component.ref as any)?.onKeyDown(props)
+      },
+      onExit() {
+        popup[0].destroy()
+        component.destroy()
+      },
+    }
+  },
+})
diff --git a/web/components/editor/mention.tsx b/web/components/editor/mention.tsx
new file mode 100644
index 00000000..3ad5de39
--- /dev/null
+++ b/web/components/editor/mention.tsx
@@ -0,0 +1,29 @@
+import Mention from '@tiptap/extension-mention'
+import {
+  mergeAttributes,
+  NodeViewWrapper,
+  ReactNodeViewRenderer,
+} from '@tiptap/react'
+import clsx from 'clsx'
+import { Linkify } from '../linkify'
+
+const name = 'mention-component'
+
+const MentionComponent = (props: any) => {
+  return (
+    <NodeViewWrapper className={clsx(name, 'not-prose inline text-indigo-700')}>
+      <Linkify text={'@' + props.node.attrs.label} />
+    </NodeViewWrapper>
+  )
+}
+
+/**
+ *  Mention extension that renders React. See:
+ *  https://tiptap.dev/guide/custom-extensions#extend-existing-extensions
+ *  https://tiptap.dev/guide/node-views/react#render-a-react-component
+ */
+export const DisplayMention = Mention.extend({
+  parseHTML: () => [{ tag: name }],
+  renderHTML: ({ HTMLAttributes }) => [name, mergeAttributes(HTMLAttributes)],
+  addNodeView: () => ReactNodeViewRenderer(MentionComponent),
+})
diff --git a/web/package.json b/web/package.json
index d09ccaf0..9f27643e 100644
--- a/web/package.json
+++ b/web/package.json
@@ -27,6 +27,7 @@
     "@tiptap/extension-character-count": "2.0.0-beta.31",
     "@tiptap/extension-image": "2.0.0-beta.30",
     "@tiptap/extension-link": "2.0.0-beta.43",
+    "@tiptap/extension-mention": "2.0.0-beta.102",
     "@tiptap/extension-placeholder": "2.0.0-beta.53",
     "@tiptap/react": "2.0.0-beta.114",
     "@tiptap/starter-kit": "2.0.0-beta.190",
@@ -49,7 +50,8 @@
     "react-hot-toast": "2.2.0",
     "react-instantsearch-hooks-web": "6.24.1",
     "react-query": "3.39.0",
-    "string-similarity": "^4.0.4"
+    "string-similarity": "^4.0.4",
+    "tippy.js": "6.3.7"
   },
   "devDependencies": {
     "@tailwindcss/forms": "0.4.0",
diff --git a/yarn.lock b/yarn.lock
index ffa8e6f0..019a3dd4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3010,6 +3010,15 @@
   resolved "https://registry.yarnpkg.com/@tiptap/extension-list-item/-/extension-list-item-2.0.0-beta.23.tgz#6d1ac7235462b0bcee196f42bb1871669480b843"
   integrity sha512-AkzvdELz3ZnrlZM0r9+ritBDOnAjXHR/8zCZhW0ZlWx4zyKPMsNG5ygivY+xr4QT65NEGRT8P8b2zOhXrMjjMQ==
 
+"@tiptap/extension-mention@2.0.0-beta.102":
+  version "2.0.0-beta.102"
+  resolved "https://registry.yarnpkg.com/@tiptap/extension-mention/-/extension-mention-2.0.0-beta.102.tgz#a80036b0a4481efc4f69b788af3f5c76428624cc"
+  integrity sha512-QTBBpWnRnoV7/ZW31HwhPvZL3HiwnlehlHSLeMioVxAQPF5WrRtlOpxK/SRu7+KuwdCb7ZA1eWW/yjbXI3oktg==
+  dependencies:
+    "@tiptap/suggestion" "^2.0.0-beta.97"
+    prosemirror-model "1.18.1"
+    prosemirror-state "1.4.1"
+
 "@tiptap/extension-ordered-list@^2.0.0-beta.30":
   version "2.0.0-beta.30"
   resolved "https://registry.yarnpkg.com/@tiptap/extension-ordered-list/-/extension-ordered-list-2.0.0-beta.30.tgz#1f656b664302d90272c244b2e478d7056203f2a8"
@@ -3073,6 +3082,15 @@
     "@tiptap/extension-strike" "^2.0.0-beta.29"
     "@tiptap/extension-text" "^2.0.0-beta.17"
 
+"@tiptap/suggestion@^2.0.0-beta.97":
+  version "2.0.0-beta.97"
+  resolved "https://registry.yarnpkg.com/@tiptap/suggestion/-/suggestion-2.0.0-beta.97.tgz#2e3dc20deebc2c37c5d39c848e61e9c837e7188a"
+  integrity sha512-3NWG+HE7v2w97Ek6z1tUosoZKpCDH+oAtIG9XoNkK1PmlaVV/H4d6HT9uPX+Y6SeN7fSAqlcXFUGLXcDi9d+Zw==
+  dependencies:
+    prosemirror-model "1.18.1"
+    prosemirror-state "1.4.1"
+    prosemirror-view "1.26.2"
+
 "@tootallnate/once@2":
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/@tootallnate/once/-/once-2.0.0.tgz#f544a148d3ab35801c1f633a7441fd87c2e484bf"
@@ -11058,7 +11076,7 @@ tiny-warning@^1.0.0, tiny-warning@^1.0.3:
   resolved "https://registry.yarnpkg.com/tiny-warning/-/tiny-warning-1.0.3.tgz#94a30db453df4c643d0fd566060d60a875d84754"
   integrity sha512-lBN9zLN/oAf68o3zNXYrdCt1kP8WsiGW8Oo2ka41b2IM5JL/S1CTyX1rW0mb/zSuJun0ZUrDxx4sqvYS2FWzPA==
 
-tippy.js@^6.3.7:
+tippy.js@6.3.7, tippy.js@^6.3.7:
   version "6.3.7"
   resolved "https://registry.yarnpkg.com/tippy.js/-/tippy.js-6.3.7.tgz#8ccfb651d642010ed9a32ff29b0e9e19c5b8c61c"
   integrity sha512-E1d3oP2emgJ9dRQZdf3Kkn0qJgI6ZLpyS5z6ZkY1DF3kaQaBsGZsndEpHwx+eC+tYM41HaSNvNtLx8tU57FzTQ==