Guðmundur Kristjánsson is a 38-year-old professional football player from ISL. He currently plays for Stjarnan Gardabaer, wearing the number 5 shirt. At the international level, he represents Iceland. He plays primarily as a Defender. He stands at 181cm tall and weighs 82kg. His preferred foot is Right. His current market value is estimated at 75K €.

His most recent move was a from Hafnarfjordur to Stjarnan Gardabaer on 2023-02-02.

Throughout the Iceland Besta-deild karla 2025, Guðmundur Kristjánsson featured in 23 matches, averaging 1.3 tackles, 1.3 interceptions, and 5.6 clearances per game, while blocking 0.1 shots per game.