The 1998 Five Nations Championship was the 69th series of the rugby union Five Nations Championship.

Including the previous incarnations as the Home Nations and Five Nations, this was the hundred-and-fourth series of the northern hemisphere rugby union championship.

Ten matches were played over five weekends from 7 February to 5 April.

France won it with a Grand Slam.

England had the consolation of winning the Triple Crown, the Calcutta Cup and the Millennium Trophy.