Cognomen بيرتو (Berto 
, بيرتو) , in all the world, is a common surname. The family name بيرتو is habitual in Guernsey, where it is quite a common surname, Italy, and Brazil, where it is quite a rare surname. In absolute terms, it is the most numerous in Brazil, Italy, and Indonesia. Likewise, بيرتو is the forename as well as the last name.