The Contacts application, which ships on all new Mac computers, stores a wealth of contact information, including phone numbers, email addresses and instant messaging screen names. Mac users can save contact information for both people and businesses, and they can sync it between the Mac and Apple's mobile devices. Users can delete a contact card if they no longer need it in the Contacts list.
Open the Contacts application by clicking on the Dock icon.
Select the contact card you want to delete by clicking on the name of a business or person.
Click "Edit" in the menu bar at the top of the screen and select the "Delete Card" option. A drop-down window opens asking you to confirm your decision.
Click "Delete" in the confirmation window to permanently delete the contact from your Contacts application.
Information in this article applies to Mac computers running OS X 10.9.
For a quick delete option, highlight the name of a business or person name in the Contacts screen and press the "Delete" key. Confirm the deletion.
Until 2013, when Apple changed the name, Contacts was known as Address Book.
If you sync the contacts from your Mac to mobile devices such as the iPhone and iPad, deleting a contact on one device, deletes it on all the synced devices.