The 2003 Kansas State Wildcats football team represented Kansas State University in the 2003 NCAA Division I-A football season. The team's head coach was Bill Snyder. The Wildcats played their home games in KSU Stadium. The team finished the season with a win-loss record of 11–4, and a Big 12 Conference record of 6–2. They notched a stunning 35–7 victory over the #1 ranked Oklahoma Sooners in the Big 12 Championship Game. With their first conference championship since 1934, they earned a berth in one of the Bowl Championship Series bowl games, the 2004 Fiesta Bowl, where they were defeated by the Ohio State Buckeyes, 28–35. The Wildcats played 15 games, most in school history.