Surname ألويس (Alois 
, Aloys , ألويس) , across the world, is a common cognomen. The cognomen ألويس is characteristic of Liechtenstein, where it is quite a common surname, Rwanda, and Papua New Guinea, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Tanzania, Rwanda, and the United States. More frequently, ألويس is the forename as well as the last name.