Surname Ysas (Ysas 
) , around the globe, is a rare family name. The surname Ysas is habitual in Latin America and the Caribbean, particularly Argentina, where it is a rare surname, Venezuela, where it is a very rare surname, and Mexico. Not in comparison with a country's population, it most frequently occurs in Argentina, Mexico, and China. Also, Ysas is the forename as well as the last name.