The 1998 Kansas State Wildcats football team represented Kansas State University in the 1998 NCAA Division I-A football season. The team's head football coach was Bill Snyder. The Wildcats played their home games in KSU Stadium. 1998 saw the Wildcats finish with a record of 11–2, and an 8–0 record in Big 12 Conference play. The season ended with a loss to Purdue in the 1998 Alamo Bowl. The Wildcats finished the regular season undefeated (11-0). After the Wildcats' loss to #10 Texas A&M in the 1998 Big 12 Championship Game, the team dropped out of contention for the National Championship game.