Surname Sayis (Seis 
, Sayis 
) , around the globe, is quite a rare cognomen. The cognomen Sayis is habitual in Guatemala, where it is quite a rare surname, Germany, where it is a rare surname, and the Dominican Republic. Not in comparison with a country's population, this name is the most popular in Germany, the United States, and Guatemala. Much less frequently, Sayis is the forename as well as the last name.