Sigurður Þorbjörn Ingimundarson (born 14 June 1966) is an Icelandic former basketball coach and player. He is the winningest coach in Icelandic basketball history for both genders, both in terms of national championships and career wins. In 2009, Sigurður was hired as the head coach of Solna Vikings. He left after only two games due to a disagreement with the board regarding how to build up the team, claiming he was not happy with the boards insistence on adding more American players to ensure short-term success.