Surname إرنا (Erna 
, إرنا) , all over the world, is a common last name. The last name إرنا is characteristic of Poland, where it is quite a common surname, Bosnia and Herzegovina, where it is quite a rare surname, and Indonesia. In absolute terms, it is commonest in Indonesia, Poland, and Philippines. More frequently, إرنا is the forename as well as the last name.