| Coachrank: | 2 |
| Aprank: | 6 |
| Hc Year: | 15th |
| Mode: | Basketball |
| Year: | 2002–03 |
| Team: | Kansas Jayhawks |
| Conference: | Big 12 Conference |
| Division: | North |
| Short Conf: | Big 12 |
| Record: | 30–8 |
| Conf Record: | 14–2 |
| Head Coach: | Roy Williams |
| Asst Coach1: | Jerod Haase |
| Ac1 Year: | 4th |
| Asst Coach2: | Joe Holladay |
| Ac2 Year: | 9th |
| Asst Coach3: | Ben Miller |
| Ac3 Year: | 3rd |
| Asst Coach4: | Steve Robinson |
| Ac4 Year: | 8th |
| Captain: | Nick Collison |
| Captain2: | Kirk Hinrich |
| Stadium: | Allen Fieldhouse |
| Champion: | NCAA tournament, Runner-up Big 12 regular season champions |
| Bowl: | National Championship Game |
| Bowl Result: | L 78-81 vs. Syracuse |
The 2002–03 Kansas Jayhawks men's basketball team represented the University of Kansas in the 2002–03 NCAA Division I men's basketball season, which was the Jayhawks' 105th basketball season and the 15th and final season under head coach Roy Williams. The team played its home games in Allen Fieldhouse in Lawrence, Kansas.
| Name | Position | Height | Weight | Year | Home Town | ||
|---|---|---|---|---|---|---|---|
| Nick Collison | 4 | Forward | 6–9 | 255 | Senior | Iowa Falls, Iowa | |
| Jeff Graves | 42 | Forward | 6–9 | 255 | Junior | Lee's Summit, Missouri | |
| Jeff Hawkins | 1 | Guard | 5–11 | 175 | Freshman | Kansas City, Kansas | |
| Kirk Hinrich | 10 | Guard | 6–3 | 190 | Senior | Sioux City, Iowa | |
| Keith Langford | 5 | Guard | 6–4 | 205 | Sophomore | Fort Worth, Texas | |
| Michael Lee | 25 | Guard | 6–3 | 215 | Sophomore | Portland, Oregon | |
| Aaron Miles | 11 | Guard | 6–1 | 175 | Sophomore | Portland, Oregon | |
| Christian Moody | 34 | Forward | 6–7 | 205 | Freshman | Asheville, North Carolina | |
| Bryant Nash | 33 | Forward | 6–6 | 205 | Junior | Carrollton, Texas | |
| Moulaye Niang | 55 | Forward | 6–10 | 215 | Freshman | El Cajon, California | |
| Brett Olson | 3 | Forward | 6–7 | 220 | Junior | Chanute, Kansas | |
| Wayne Simien | 23 | Forward | 6–9 | 255 | Sophomore | Leavenworth, Kansas | |
| Stephen Vinson | 20 | Guard | 6–2 | 185 | Freshman | Lawrence, Kansas |
|-!colspan=9 style=| Exhibition|-!colspan=9 style=|Regular season |-!colspan=9 style=|Big 12 Tournament|-!colspan=9 style=|NCAA tournament[4] [5]
| Poll | Pre | Wk 1 | Wk 2 | Wk 3 | Wk 4 | Wk 5 | Wk 6 | Wk 7 | Wk 8 | Wk 9 | Wk 10 | Wk 11 | Wk 12 | Wk 13 | Wk 14 | Wk 15 | Wk 16 | Wk 17 | Wk 18 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AP | 2 | 2 | 2 | 14 | 20 | 19 | 19 | 18 | 14 | 12 | 6 | 12 | 12 | 9 | 6 | 7 | 6 | 4 | 6 | |
| Coaches | 2 |
| 2 | 13 | 19 | 18 | 19 | 17 | 14 | 12 | 6 | 13 | 11 | 10 | 6 | 7 | 6 | 4 | 2 |