How to Delete a Contact on a Mac
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.