Surname دياس (Dias 
, دياس 
) , throughout the world, is a prevalent cognomen. The family name دياس is habitual in Portugal, where it is a prevalent surname, Cabo Verde, where it is a widespread surname, and Brazil, where it is a common surname (explore the name in all countries). Measured by absolute frequency, this name is the most popular in Brazil, Portugal, and Sri Lanka. Much less frequently, دياس is the forename as well as the last name.