| Mode: | Basketball |
| Year: | 1989–90 |
| Team: | Boston University Terriers |
| Conference: | North Atlantic Conference |
| Short Conf: | NAC |
| Record: | 18–12 |
| Conf Record: | 9–3 |
| Head Coach: | Mike Jarvis |
| Hc Year: | 5th |
| Captain: | Steven Key |
| Stadium: | Case Gym |
| Champion: | NAC Regular season co-champions NAC tournament champions |
| Bowl: | NCAA tournament |
The 1989–90 Boston University Terriers men's basketball team represented Boston University during the 1989–90 NCAA Division I men's basketball season. The Terriers, led by fifth year head coach Mike Jarvis, played their home games at Case Gym and were members of the North Atlantic Conference. They finished the season 18–12, 9–3 in NAC play to finish in a tie for the regular season conference title. The Terriers won the NAC tournament to receive an automatic bid to the NCAA tournament as No. 16 seed in the East region. Boston University was defeated by top seed Connecticut in the opening round, 76–52.[1]
|-!colspan=9| Regular season|-!colspan=9| NAC tournament|-!colspan=9| NCAA tournament[3]