Cognomen سيلاس (Silas 
, Silus , Sellas 
) , in the world, is a common last name. The last name سيلاس is habitual in Vanuatu, where it is a common surname, Namibia, where it is quite a common surname, and Nigeria (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in Sub-Saharan Africa, particularly Nigeria, Ethiopia, and Tanzania. Likewise, سيلاس is the forename as well as the last name.