Family name Gavay (Gavay 
) , throughout the world, is a rare surname. The cognomen Gavay is characteristic of Hungary, where it is a rare surname, Malaysia, where it is a very rare surname, and the United States, where it is an extremely rare surname. In absolute terms, this name is the most popular in Hungary, India, and Malaysia. Much less frequently, Gavay is the forename as well as the last name.