Gísli Örn Garðarsson (born 15 December 1973, Reykjavík, Iceland) is an Icelandic actor, director, producer, and writer. He is one of the thirteen founding members of Vesturport, Iceland's premier theatre and film company. He is best known as Vidar Jutul in Ragnarok (2020–2023, Netflix) and for writing, producing, and acting in Children (2006), which earned him the Shooting Stars Award at the 2007 Berlin Film Festival. In film, he has appeared in Prince of Persia: The Sands of Time (2010) and Against the Ice (2022). He was awarded the Order of the Falcon, Knight's Cross by the President of Iceland in 2010 and has won multiple Edda Awards.