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In the entire world, Blay (Blay , Блай , Блэй) is quite a rare principally male, but very infrequently girly first name. The given name Blay is characteristic of Ghana, where it is quite a rare boy's name, Israel, and Cuba, where it is a rare girly name. In absolute terms, this name is the most popular in Ghana, Ethiopia, and Israel. More frequently, Blay is the last name as well as the forename.