The 2009 Toppserien was the twenty-third season of top-tier women's football in Norway since its establishment in 1987. A total of twelve teams contested the league, consisting of ten who competed in the previous season and two promoted from the 1. divisjon. Running from 13 April to 31 October 2009, it was won by Røa for the third consecutive year. As winners, Røa qualified for the Round of 32 of the 2010–11 UEFA Women's Champions League as the sole representative from Norway. Because Norway had dropped to ninth place in the UEFA coefficient rankings for 2010–11, the runners-up in the Toppserien could no longer enter the Qualifying Round of the Champions League, as had been the case in the previous season.