Family name Сайлас (Silas 
, Sillas 
, Сайлас 
) , across the world, is a common last name. The family name Сайлас 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, it most frequently occurs in Sub-Saharan Africa, particularly Nigeria, Ethiopia, and Tanzania. Likewise, Сайлас is the forename as well as the last name.