The 2009–10 Kansas State Wildcats men's basketball team represented Kansas State University in the 2009–10 NCAA Division I men's basketball season. The head coach was Frank Martin, who served his 3rd year at the helm of the Wildcats. The team played its home games in Bramlage Coliseum in Manhattan, Kansas. Kansas State is a member of the Big 12 Conference. The Wildcats began conference play with a trip to Columbia, Missouri and faced the Missouri Tigers and finished the year with a home game against the Iowa State Cyclones. They finished the season 29–8 and ranked #7 in the AP Poll and the ESPN/USA Today Coaches' Poll. They lost to the rival Kansas Jayhawks in the finals of the Big 12 tournament, 72–64.