Last name Maccay (麦凯 
, Maccay 
) , all over the world, is a very rare cognomen. The cognomen Maccay is habitual in Philippines, where it is a very rare surname, the United States, where it is an extremely rare surname, and Mexico. Not in comparison with a country's population, the name is most common in Philippines, the United States, and China. Likewise, Maccay is the forename as well as the last name.