iCloud: Delete a contact
You can delete a contact at any time.
WARNING: When you delete a contact, it is deleted on every device that has the iCloud Contacts feature turned on. For example, if your iPhone and Mac have iCloud Contacts turned on, and you delete a contact with the iCloud Contacts web app, the contact is also deleted in the Contacts app on your iPhone and Mac.
In iCloud Contacts, do either of the following:
To delete a contact completely, select the contact in the All Contacts list, then press the Delete key. Click Delete in the dialog that appears.
To delete a contact from a group, click the group on the left, select the contact, then press the Delete key.
Deleting a contact from a group removes it from that group only.
If you accidentally deleted iCloud contacts, you can use iCloud.com to restore them from an earlier version that was automatically archived in iCloud. For instructions, see Restore your contacts, calendars and reminders, or bookmarks.