| Mode: | Basketball |
| Year: | 1988–89 |
| Prev Year: | 1987–88 |
| Next Year: | 1989–90 |
| Team: | Bucknell Bison |
| Conference: | East Coast Conference |
| Short Conf: | ECC |
| Record: | 23–8 |
| Conf Record: | 11–3 |
| Head Coach: | Charles Woollum |
| Stadium: | Davis Gym |
| Champion: | ECC tournament champions ECC Regular season champions |
| Bowl: | NCAA tournament |
The 1988–89 Bucknell Bison men's basketball team represented Bucknell University during the 1988–89 NCAA Division I men's basketball season. The Bison, led by head coach Charles Woollum, played their home games at Davis Gym and were members of the East Coast Conference. They finished the season 23–8, 11–3 in Patriot League play to be crowned regular season champions. They were also champions of the ECC tournament to earn an automatic bid to the 1989 NCAA tournament where they lost in the first round to Syracuse.
|-!colspan=9| Regular season
|-!colspan=9| ECC tournament|-!colspan=9| NCAA tournament[2]