| 1991 New Zealand NBL season | |
|---|---|
| League | New Zealand NBL |
| Sport | Basketball |
| Number of teams | 12 |
| Regular season | |
| Minor premiers | Hutt Valley |
| Top scorer | Ronnie Joyner (Waikato) |
| Playoffs | |
| Champions | Hutt Valley |
| Runners-up | Wellington |
The 1991 NBL season was the tenth season of the National Basketball League. Hutt Valley won the championship in 1991 to claim their first league title.[1]