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]

Final standings

#	Team
	Hutt Valley
	Wellington
3	New Plymouth
4	Otago
5	Nelson
6	Canterbury
7	North Harbour
8	Waitakere
9	Palmerston North
10	Hawke's Bay
11	Waikato
12	Auckland

Season awards

• NZ Most Valuable Player: Byron Vaetoe (New Plymouth)^[1]
• Most Outstanding Guard: Eddie Anderson (Canterbury)
• Most Outstanding NZ Guard: Byron Vaetoe (New Plymouth)
• Most Outstanding Forward: Darryl Johnson (Hutt Valley)
• Most Outstanding NZ Forward/Centre: Peter Pokai (Hutt Valley)
• Scoring Champion: Ronnie Joyner (Waikato)
• Rebounding Champion: Willie Burton (New Plymouth)
• Assist Champion: Kenny McFadden (Wellington)
• Young Player of the Year: Warren Adams (Hutt Valley)
• Coach of the Year: Jeff Green (Hutt Valley)
• All-Star Five:
  • Eddie Anderson (Canterbury)
  • Kerry Boagni (Wellington)
  • Tony Brown (Hutt Valley)
  • Willie Burton (New Plymouth)
  • Darryl Johnson (Hutt Valley)