| Mode: | Basketball |
| Year: | 1989–90 |
| Team: | Kansas Jayhawks |
| Conference: | Big Eight Conference |
| Short Conf: | Big Eight |
| Coachrank: | 5 |
| Aprank: | 5 |
| Record: | 30–5 |
| Conf Record: | 11–3 |
| Head Coach: | Roy Williams |
| Hc Year: | 2nd |
| Asst Coach1: | Jerry Green |
| Ac1 Year: | 2nd |
| Asst Coach2: | Steve Robinson |
| Ac2 Year: | 2nd |
| Asst Coach3: | Kevin Stallings |
| Ac3 Year: | 2nd |
| Asst Coach4: | Mark Turgeon |
| Ac4 Year: | 3rd |
| Captain: | Rick Calloway |
| Captain2: | Jeff Gueldner |
| Captain3: | Kevin Pritchard |
| Captain4: | Freeman West |
| Stadium: | Allen Fieldhouse |
| Champion: | Preseason NIT Champions |
| Bowl: | NCAA men's Division I tournament |
| Bowl Result: | second round |
The 1989–90 Kansas Jayhawks men's basketball team represented the University of Kansas in the 1989–90 NCAA Division I men's basketball season, which was the Jayhawks' 92nd basketball season. The head coach was Roy Williams, who served his 2nd year at KU. The team played its home games in Allen Fieldhouse in Lawrence, Kansas. The team set an NCAA record for largest unranked to ranked jump. Following the preseason NIT, where the Jayhawks defeated the 2nd, 1st, and 25th ranked teams in the nation, the Jayhawks jumped to the 4th ranked team in the nation. They remained in the top two for the remainder of the regular season. The season also marked the beginning of an NCAA-record 32 consecutive NCAA tournament appearances that as of the 2023 tournament (there was no tournament in 2020 due to the COVID-19 pandemic) is still active. The Jayhawks 150–95 victory over Kentucky on December 9, remains the most points scored in a game in Kansas basketball history and the worst defeat in Kentucky's history.[1]
| Name | Position | Height | Weight | Year | Home Town | ||
|---|---|---|---|---|---|---|---|
| Todd Alexander | 35 | Guard | 6–2 | 190 | Freshman | McPherson, Kansas | |
| Terry Brown | 3 | Guard | 6–1 | 185 | Junior | Clyde, New York | |
| Rick Calloway | 20 | Forward | 6–6 | 190 | Senior | Cincinnati, Ohio | |
| Jeff Gueldner | 33 | Guard/Forward | 6–5 | 190 | Senior | Charleston, Illinois | |
| Alonzo Jamison | 24 | Forward | 6–5 | 235 | Sophomore | Santa Ana, California | |
| Adonis Jordan | 30 | Guard | 5–11 | 160 | Freshman | Reseda, California | |
| Mike Maddox | 32 | Forward | 6–7 | 210 | Junior | Oklahoma City, Oklahoma | |
| Pekka Markkanen | 44 | Center | 6–10 | 215 | Junior | Jyvaskyla, Finland | |
| Macolm Nash | 43 | Forward | 6–7 | 195 | Sophomore | St. Louis, Missouri | |
| Kevin Pritchard | 14 | Guard | 6–3 | 180 | Senior | Tulsa, Oklahoma | |
| Mark Randall | 42 | Forward | 6–9 | 230 | Junior | Englewood, Colorado | |
| Kirk Wagner | 31 | Forward | 6–7 | 210 | Junior | Pasadena, California | |
| Freeman West | 34 | Forward | 6–5 | 210 | Senior | East Chicago, Indiana | |
| Eric Ridenour | 40 | Forward | 6–5 | 205 | Junior | Cimarron, Kansas |
| Team | Conference | Pct. | Overall | Pct. | ||
|---|---|---|---|---|---|---|
| 1 | Missouri | .857 | .813 | |||
| 2 | Oklahoma | .786 | .844 | |||
| 3 | Kansas | .786 | .857 | |||
| 4 | Kansas State | .500 | .531 | |||
| 5 | .429 | .548 | ||||
| 6 | Iowa State | .286 | .357 | |||
| 7 | .214 | .357 | ||||
| 8 | .143 | .400 |
|-|-|-!colspan=9| Big Eight Tournament|-!colspan=9| NCAA tournament[3]