Surname Роналдо (Ronaldo 
, Роналдо 
, Ronaldu 
) , in the world, is a common cognomen. The surname Роналдо is characteristic of Nicaragua, where it is quite a common surname, Egypt, and Algeria (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in Egypt, Indonesia, and Algeria. More prevalently, Роналдо is the forename as well as the last name.