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In all the world, Mackay (Mackay , 麦凯 , Маккей ) is a rare mostly male, but uncommonly girly first name. The forename Mackay is characteristic of Australia, where it is a very rare epicene name, South Africa, where it is a very rare dominantly masculine, but seldom feminine name, and the United Kingdom, where it is a very rare unisex name. Not in comparison with a country's population, it most frequently occurs in China, the United States, and Nigeria. Predominantly, Mackay is the last name as well as the forename.
Mackay is also a name for the fictitious and mythical characters: .