Cognomen Gub (Gub 
) , throughout the world, is a rare family name. The surname Gub is habitual in Moldova, where it is quite a rare surname, Taiwan, where it is a rare surname, and Poland, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in Taiwan, Indonesia, and Moldova. Much less frequently, Gub is the forename as well as the last name.