Cognomen ארסמוס (Erasmus 
, ארסמוס 
) , across the world, is a common last name. The family name ארסמוס is habitual in Aruba, where it is a common surname, Namibia, where it is quite a common surname, and South Africa (explore the name in all countries). Measured by absolute frequency, this name is the most popular in Sub-Saharan Africa, particularly South Africa, Namibia, and Tanzania. Much less frequently, ארסמוס is the forename as well as the last name.