The 1998 season of the Toppserien, the highest women's football (soccer) league in Norway, began on 25 April 1998 and ended on 17 October 1998. 18 games were played with 3 points given for wins and 1 for draws. Number nine and ten were relegated, while two teams from the First Division were promoted through a playoff round. Asker won the league, as well as all its games.