1979–80 Kansas State Wildcats men's basketball team

The 1979–80 Kansas State Wildcats men's basketball team represented Kansas State University as a member of the Big Eight Conference in the 1979–80 NCAA Division I men's basketball season. The team was led by head coach Jack Hartman and played their home games at Ahearn Field House in Manhattan, Kansas. The Wildcats, poised to win the conference regular season after winning 8 of 10 to begin Big Eight play, finished second in the conference regular season standings. K-State rebounded to win the Big Eight tournament and received an automatic bid to the NCAA tournament as No. 7 seed in the Midwest region. The Wildcats beat No. 10 seed Arkansas in the opening round, then fell to No. 2 seed and eventual National champion Louisville, 71–69 in overtime. Kansas State finished with a record of 22–9 (8–6 Big Eight).

Schedule and results
!colspan=9 style=| Regular Season

!colspan=9 style=| Big Eight Tournament

!colspan=9 style=| NCAA Tournament

Awards and honors

 * Rolando Blackman – Big Eight Player of the Year