Cognomen Guyas (Guyas 
) , all over the world, is a rare last name. The surname Guyas is habitual in Israel, where it is quite a rare surname, the United States, where it is a very rare surname, and Chile, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Israel, the United States, and India. Likewise, Guyas is the forename as well as the last name.