Surname Ustas (Ustas 
) , around the world, is quite a rare cognomen. The family name Ustas is characteristic of Nigeria, where it is a rare surname, the United States, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. In absolute terms, it is the most numerous in Nigeria, the United States, and South Africa. Likewise, Ustas is the forename as well as the last name.