Cognomen מקיי (Mckay 
, Mccay , Mackye ) , worldwide, is a common surname. The cognomen מקיי is habitual in Marshall Islands, where it is quite a common surname, New Zealand, and Jamaica (explore the name in all countries). In absolute terms, it is commonest in the United States, the United Kingdom, and Canada. Much less frequently, מקיי is the forename as well as the last name.