Surname Саис (Sais 
, Саис 
) , across the world, is quite a common family name. The family name Саис is habitual in Algeria, where it is quite a rare surname, Morocco, and Benin, where it is a rare surname. Measured by absolute frequency, this name is the most popular in Algeria, the United States, and Mexico. Also, Саис is the forename as well as the last name.