Úlfur Úlfur (English: Wolf Wolf) is a rap duo from Reykjavík, Iceland. They debuted in 2011 with their first album Föstudagurinn langi. In 2015 they released their follow-up album Tvær plánetur featuring the hit single Brennum allt. The members are: Arnar Freyr (Arnar Úlfur) and Helgi Sæmundur (iamhelgi).