Cognomen Gigu (Gigu 
) , all over the world, is quite a rare surname. The family name Gigu is habitual in Nigeria, where it is quite a rare surname, Romania, where it is a rare surname, and Myanmar, where it is a very rare surname. In absolute terms, it most frequently occurs in Nigeria, India, and Myanmar. Much less frequently, Gigu is the forename as well as the last name.