Gudmundur was born in Reykjavik, Iceland 1982. He graduated in fine art from the Icelandic Art Academy. There after he moved to Denmark and studied screenwriting. Gudmundur works as a filmmaker and a part time teacher in film and fine art. His short films have collected 20 international awards and over 100 nominations. Ártún received f.x. the Grand Prix for Best Short Film at Brest S.F.F and The Golden Plaque for Best Live Action/Narrative Short at Chicago I.F.F.