Guðmundur Pétursson (born (1986-11-24)24 November 1986) is an Icelandic footballer. He is a forward and is currently under contract at Breiðablik. He has also played for Iceland at under-21 level.
Born in Reykjavík, Pétursson began his career with ÍR, based in Reykjavík in 2004. In his first season, Pétursson played 17 games for ÍR, mainly coming on as a substitute. He showed his talents early in the season against Selfoss, coming on as a substitute in the 81st minute and scoring twice within two minutes of arrival on the pitch. He didn't play as much in the second season because of conflicts with his manager but still scored 3 goals in the 6 games he got to play. In his last season at ÍR, he played 11 games and scored 2 goals until he was scouted by KR.
On 1 August 2006, Pétursson went on loan to KR where he played 3 games and scored 1 goal. In the final match of the season against Valur, Pétursson scored the winning goal which got KR into European football. He also went all the way to the final of VISA Bikar 2008 with KR, only to lose against Keflavík 0–2. It was Pétursson's first medal as a senior in football. KR where pleased with Pétursson's performance and signed him for 3 years. He was considered to have quite some potential, playing 7 games and scoring 2 goals, which got him a loan offer from Sandefjord on 31 August 2007. There he played 6 games but was unable to find the net. He returned to KR in 2008. The seasons 2008 and 2009 Pétursson had limited playing time. He played 36 games, mainly coming on as a substitute, and scored 3 goals. With KR he won the VISA Bikar 2008, coming off the bench as a substitute in the final against Fjölnir. In 2009, Pétursson was getting concerned at KR, because of his lack of playing time and wanted to find some playing time else where.