diff --git a/src/components/NcAvatar/NcAvatar.vue b/src/components/NcAvatar/NcAvatar.vue
index 5823d6149e..f33bf0ad95 100644
--- a/src/components/NcAvatar/NcAvatar.vue
+++ b/src/components/NcAvatar/NcAvatar.vue
@@ -196,7 +196,8 @@ export default {
 			<component :is="item.ncActionComponent"
 				v-for="(item, key) in menu"
 				:key="key"
-				v-bind="item.ncActionComponentProps">
+				v-bind="item.ncActionComponentProps"
+				v-on="item.ncActionComponentHandlers">
 				<template v-if="item.iconSvg" #icon>
 					<NcIconSvgWrapper :svg="item.iconSvg" />
 				</template>
@@ -232,16 +233,19 @@ import NcActions from '../NcActions/index.js'
 import NcActionLink from '../NcActionLink/index.js'
 import NcActionRouter from '../NcActionRouter/index.js'
 import NcActionText from '../NcActionText/index.js'
+import NcActionButton from '../NcActionButton/index.js'
 import NcButton from '../NcButton/index.js'
 import NcIconSvgWrapper from '../NcIconSvgWrapper/index.js'
 import NcLoadingIcon from '../NcLoadingIcon/index.js'
 import NcUserStatusIcon from '../NcUserStatusIcon/index.js'
 import usernameToColor from '../../functions/usernameToColor/index.js'
+import { getEnabledContactsMenuActions } from '../../functions/contactsMenu/index.ts'
 import { getAvatarUrl } from '../../utils/getAvatarUrl.ts'
 import { getUserStatusText } from '../../utils/UserStatus.ts'
 import { userStatus } from '../../mixins/index.js'
 import { t } from '../../l10n.js'
 import { getRoute } from '../../components/NcRichText/autolink.js'
+import logger from '../../utils/logger.js'
 
 import axios from '@nextcloud/axios'
 import DotsHorizontal from 'vue-material-design-icons/DotsHorizontal.vue'
@@ -419,6 +423,7 @@ export default {
 			isAvatarLoaded: false,
 			isMenuLoaded: false,
 			contactsMenuLoading: false,
+			contactsMenuData: {},
 			contactsMenuActions: [],
 			contactsMenuOpenState: false,
 		}
@@ -566,6 +571,25 @@ export default {
 				}
 			})
 
+			for (const action of getEnabledContactsMenuActions(this.contactsMenuData)) {
+				try {
+					actions.push({
+						ncActionComponent: NcActionButton,
+						ncActionComponentProps: {},
+						ncActionComponentHandlers: {
+							click: () => action.callback(this.contactsMenuData),
+						},
+						text: action.displayName(this.contactsMenuData),
+						iconSvg: action.iconSvg(this.contactsMenuData),
+					})
+				} catch (error) {
+					logger.error(`Failed to render ContactsMenu action ${action.id}`, {
+						error,
+						action,
+					})
+				}
+			}
+
 			/**
 			 * @param {string} html The HTML to escape
 			 */
@@ -663,6 +687,7 @@ export default {
 			try {
 				const user = encodeURIComponent(this.user)
 				const { data } = await axios.post(generateUrl('contactsmenu/findOne'), `shareType=0&shareWith=${user}`)
+				this.contactsMenuData = data
 				this.contactsMenuActions = data.topAction ? [data.topAction].concat(data.actions) : data.actions
 			} catch (e) {
 				this.contactsMenuOpenState = false
diff --git a/src/functions/contactsMenu/index.ts b/src/functions/contactsMenu/index.ts
new file mode 100644
index 0000000000..b9e73a3d2b
--- /dev/null
+++ b/src/functions/contactsMenu/index.ts
@@ -0,0 +1,64 @@
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import logger from '../../utils/logger.js'
+
+// Taken from \OC\Contacts\ContactsMenu\Entry::jsonSerialize
+export interface ContactsMenuEntry {
+	id: number|string|null,
+	fullName: string,
+	avatar: string|null,
+	topAction: object|null,
+	actions: object[],
+	lastMessage: '',
+	emailAddresses: string[],
+	profileTitle: string|null,
+	profileUrl: string|null,
+	status: string|null,
+	statusMessage: null|string,
+	statusMessageTimestamp: null|number,
+	statusIcon: null|string,
+	isUser: boolean,
+	uid: null|string,
+}
+
+export interface ContactsMenuAction {
+	id: string,
+	displayName: (entry: ContactsMenuEntry) => string,
+	enabled: (entry: ContactsMenuEntry) => boolean,
+	iconSvg: (entry: ContactsMenuEntry) => string,
+	callback: (entry: ContactsMenuEntry) => void,
+}
+
+/**
+ * Register a contacts and avatar menu action that will invoke the given callback on click.
+ *
+ * @param {ContactsMenuAction} action The action to register
+ */
+export function registerContactsMenuAction(action: ContactsMenuAction): void {
+	window._nc_contacts_menu_hooks ??= {}
+
+	if (window._nc_contacts_menu_hooks[action.id]) {
+		logger.error(`ContactsMenu action for id ${action.id} has already been registered`, {
+			action,
+		})
+		return
+	}
+
+	window._nc_contacts_menu_hooks[action.id] = action
+}
+
+/**
+ * Get all registered and enabled contacts menu actions for the given menu entry.
+ *
+ * @param {ContactsMenuEntry} entry The contacts menu entry object as returned by the backend
+ */
+export function getEnabledContactsMenuActions(entry: ContactsMenuEntry): ContactsMenuAction[] {
+	if (!window._nc_contacts_menu_hooks) {
+		return []
+	}
+
+	return Object.values(window._nc_contacts_menu_hooks).filter((action) => action.enabled(entry))
+}
diff --git a/src/functions/index.ts b/src/functions/index.ts
index bc0b822256..5e5bed97b6 100644
--- a/src/functions/index.ts
+++ b/src/functions/index.ts
@@ -8,4 +8,5 @@ export * from './dialog/index.ts'
 export * from './emoji/index.ts'
 export * from './reference/index.js'
 export * from './isDarkTheme/index.ts'
+export * from './contactsMenu/index.ts'
 export { default as usernameToColor } from './usernameToColor/index.js'
diff --git a/src/globals.d.ts b/src/globals.d.ts
index 1af6488de7..305a457e4e 100644
--- a/src/globals.d.ts
+++ b/src/globals.d.ts
@@ -3,6 +3,8 @@
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
+import type { ContactsMenuAction } from './functions/contactsMenu/index.ts'
+
 declare const PRODUCTION: boolean
 
 declare const SCOPE_VERSION: string
@@ -14,3 +16,9 @@ declare module '*?raw' {
 	const content: string
 	export default content
 }
+
+declare global {
+	interface Window {
+		_nc_contacts_menu_hooks: { [id: string]: ContactsMenuAction },
+	}
+}