Surname Iasen (Iasen 
) , globally, is an extremely rare cognomen. The last name Iasen is characteristic of Spain, where it is an extremely rare surname, Brazil, and the United States. More frequently, Iasen is the forename as well as the last name.
Rim, Dimitrov, Kraichev, Kamburov, Stoyanov, Stefanov, Ognianov, Velikov, Vasilev, Hristov, Drenski, Krastev, Chankov, Angelov, Solakov, Georgiev, Ursula, Ivanov, Natsev, Geshev, Petrov, Pavlov, Kostov, Bytanski, Spasov, Shomov, Martin, Jelev, Peter, Kolev, Kurt, Walter, and Nestorov