Cognomen بيرنا (Berna 
, Birna 
, Perna ) , all around the world, is a common family name. The family name بيرنا is habitual in Italy, where it is quite a common surname, Iceland, where it is quite a rare surname, and Peru. In absolute terms, it is commonest in Italy, the United States, and Peru. Also, بيرنا is the forename as well as the last name.