Surname בייליס (Beilis 
, בייליס 
, Bejlis 
) , across the world, is a rare cognomen. The last name בייליס is habitual in Israel, where it is quite a rare surname, Latvia, where it is a rare surname, and Greece. Not in comparison with a country's population, this name is the most popular in Israel, Mexico, and Argentina. Much less frequently, בייליס is the forename as well as the last name.