International
Karlsson's debuted as a coach with Tre Kronor during the 2002–03 Euro Hockey Tour as assistant coach to Hardy Nilsson at the Baltica Brewery Cup. The following season he was assistant coach to Nilsson at the Česká Pojišťovna Cup and Moscow International Tournament. During the 2004–05 Euro Hockey Tour Karlsson was assistant coach to interim national team head coaches Bengt-Åke Gustafsson—at the Karjala Tournament—and Roger Melin—at the Sweden Hockey Games. Gustafsson was appointed permanent national team coach in February 2005 and choose Karlsson along with Tommy Boustedt and Tommy Samuelsson as assistant coaches for the 2005 World Championships, where Tre Kronor lost to Russia in the bronze medal game. In September 2005 Karlsson was announced as a permanent assistant coach to Gustafsson, he participated in all the 2005–06 Euro Hockey Tour tournaments except for the Rosno Cup.
At the 2006 Olympics Karlsson and Anders Eldebrink were assistant coaches to Gustafsson and together they led Tre Kronor to an Olympic gold medal. A few months later at the 2006 World Championships Karlsson again with Boustedt and Samuelsson were assistant coaches to Gustafsson when Sweden won their eight World Championship gold medal, becoming the first country to win both the Olympics and World Championships in the same year. During the 2006–07 Euro Hockey Tour Karlsson participated at the Česká Pojišťovna Cup, the Channel One Cup, and the Euro Hockey Tour finals which Tre Kronor won against Russia. Karlsson together with Boustedt and Samuelsson were assistant coaches to Gustafsson At the 2007 World Championship, where Tre Kronor lost to Russia in the bronze medal game. Following the World Championship Karlsson announced that he resigned from his permanent position with Tre Kronor due to his obligations as head coach of Linköping. However Karlsson returned to Tre Kronor together with Eldebrink as an assistant coaches to Gustafsson for the 2008 World Championship, where Tre Kronor lost to Finland in the bronze medal game.
Read more about this topic: Janne Karlsson (ice Hockey B. 1958)