The Kansas Jayhawks men's basketball program is the intercollegiate men's basketball program of the University of Kansas Jayhawks. The program is classified in the NCAA's Division I, and the team competes in the Big 12 Conference. Their official uniform colors are blue and crimson and their mascot are Big Jay and Baby Jay. Widely considered one of the most storied programs in collegiate sports history, their first coach was the inventor of the game, James Naismith, who is also the only coach in the program's history to have a losing record.

The program has enjoyed considerable national success, having been selected Helms Foundation National Champions in 1922 and 1923, winning three NCAA national championships in 1952, 1988, 2008, playing in 13 Final Fours, and being regularly ranked in the AP Top 25 college basketball poll. The Jayhawks rank third all-time in NCAA Division I with 1,943 wins, against 785 losses. This record includes a 616-106 (.853) mark at historic Allen Fieldhouse, and they lead all universities with 51 regular-season conference titles in 100 years of conference play through the 2007-2008 regular season, two more than the second place Kentucky Wildcats.

The Jayhawks have won a record eight conference titles and a record six conference tournament titles in the 12 years of the Big 12's existence. The program also owns the best Big 12 records in both those areas with a 158-34 record in conference play and a 25-6 record in tournament play. On April 7, 2008, in one of the most memorable NCAA National Championship games ever, the Kansas Jayhawks defeated the Memphis Tigers with 75-68 in overtime to become the 2008 NCAA Division I Men's Basketball Tournament Champions. Mario Chalmers made a 3-point shot with 2.1 seconds remaining, bringing the 'Hawks all the way back from a 60-51 deficit with two minutes remaining. In Street & Smith's Annual list of 100 greatest college basketball programs of all time in 2005, KU ranked 4th.