| Mode: | Basketball |
| Year: | 1988 - 89 |
| Team: | St. John's Redmen |
| Conference: | Big East Conference (1979–2013) |
| Short Conf: | Big East |
| Record: | 20 - 13 |
| Conf Record: | 6 - 10 |
| Asst Coach3: | Ron Rutledge |
| Champion: | NIT champions Lapchick Memorial Champions |
| Bowl: | NIT Championship vs. Saint Louis,W, 73-65 |
The 1988 - 89 St. John's Redmen basketball team represented St. John's University during the 1988–89 NCAA Division I men's basketball season. The team was coached by Lou Carnesecca in his twenty first year at the school. St. John's home games are played at Alumni Hall and Madison Square Garden and the team is a member of the Big East Conference.
| Name | Number | Pos. | Height | Weight | Year | Hometown | Notes | ||
|---|---|---|---|---|---|---|---|---|---|
| sortname | Marcus Broadnax | 5 | 6'2" | Sophomore | Transferred to UAB | ||||
| sortname | 10 | 6'9" | Senior | Graduated. Entered 1987 MLB Draft | |||||
| sortname | Marco Baldi | 14 | 6'11" | Junior | Entered Italian basketball league | ||||
| sortname | Elander Lewis | 22 | 6'4" | Sophomore | Transferred. VCU | ||||
| sortname | 31 | 6'9" | Senior | Graduated. Entered 1988 NBA draft | |||||
| sortname | Steve Shurina | 40 | 6'4" | Senior | Graduated | ||||
| sortname | Michael Porter | 6'0" | Junior | Entered CBA |
| Name | Number | Pos. | Height | Weight | Year | Hometown | Notes | ||
|---|---|---|---|---|---|---|---|---|---|
| sortname | Darrell Aiken | 5 | 6'0" | Junior | Transferred from Westchester Community College. | ||||
| sortname | Barry Milhaven | 13 | 6'5" | Junior | Transferred from Nassau Community College. |
|-!colspan=9 style="background:#FF0000; color:#FFFFFF;"| Regular season|-!colspan=9 style="background:#FF0000; color:#FFFFFF;"| Big East tournament|-!colspan=9 style="background:#FF0000; color:#FFFFFF;"| NIT