| Sport: | Basketball |
| Year: | 2008–09 |
| Team: | Wisconsin Badgers |
| Conference: | Big Ten Conference |
| Short Conf: | Big Ten |
| Record: | 20–13 |
| Conf Record: | 10–8 |
| Bowl Result: | Round of 32 |
| Assoc Coach: | Greg Gard |
The 2008–09 Wisconsin Badgers men's basketball team represented the University of Wisconsin–Madison. The head coach was Bo Ryan, coaching his eighth season with the Badgers. The team played its home games at the Kohl Center in Madison, Wisconsin, and was a member of the Big Ten Conference.
All-Big Ten by Media[1]
All-Big Ten by Coaches
| No. | Name | Position | Ht. | Wt. | Year | Hometown/High School |
|---|---|---|---|---|---|---|
| 40 | Jared Berggren | F/C | 6–10 | 240 | FR | Princeton, Minnesota / Princeton HS |
| 12 | Jason Bohannon | G | 6–2 | 195 | JR | Marion, Iowa / Linn-Mar HS |
| 21 | Morris Cain | G | 6–5 | 185 | SR | Glendale, Wisconsin / Nicolet HS |
| 5 | Ryan Evans | G/F | 6–6 | 210 | FR | Phoenix, Arizona / Hamilton HS |
| 44 | J.P. Gavinski | C | 6–11 | 250 | RS SO | Wisconsin Dells, Wisconsin / Wisconsin Dells HS |
| 3 | Trevon Hughes | G | 6–0 | 195 | JR | Queens, New York / St. John's NW Academy |
| 24 | Tim Jarmusz | F/G | 6–6 | 208 | SO | Oshkosh, Wisconsin / West HS |
| 45 | Joe Krabbenhoft | F/G | 6–6 | 217 | SR | Sioux Falls, South Dakota / Roosevelt HS |
| 1 | Marcus Landry | F | 6–7 | 215 | SR | Milwaukee, Wisconsin / Vincent HS |
| 30 | Jon Leuer | F | 6–10 | 230 | SO | Orono, Minnesota / Orono HS |
| 50 | Ian Markolf | C | 7–0 | 255 | FR | San Antonio, Texas / Churchill HS |
| 52 | Keaton Nankivil | F | 6–8 | 245 | SO | Madison, Wisconsin / Memorial HS |
| 2 | Wquinton Smith | G | 5–11 | 205 | SO | Milwaukee, Wisconsin / Rufus King HS |
| 11 | Jordan Taylor | G | 6–1 | 195 | FR | Bloomington, Minnesota / Benilde-St. Margaret's |
| 15 | Brett Valentyn | G | 6–4 | 192 | RS SO | Verona, Wisconsin / Verona HS |
| 33 | Rob Wilson | G/F | 6–3 | 200 | FR | Cleveland, Ohio / Garfield HS |
|-!colspan=12 style=|Regular Season|-!colspan=12 style=|Big Ten tournament
|-!colspan=12 style=|NCAA Tournament
See also: 2008–09 NCAA Division I men's basketball rankings.