B
- Balfour River
- Barlow River
- Barn River
- Barrier River
- Baton River
- Bealey River
- Beaumont River
- Beautiful River
- Bettne River
- Big Hohonu River
- Big River (Southland)
- Big River (Tasman)
- Big River (West Coast)
- Big Wainihinihi River
- Blackwater River
- Blairich River
- Blind River
- Blind River
- Blue Duck River
- Blue Grey River
- Blue River
- Bluff River
- Blythe River
- Bonar River
- Boulder River
- Bowen River
- Boyle River
- Branch River
- Broken River
- Brown Grey River
- Brown River
- Buller River
- Burke River
- Butler River
Read more about this topic: List Of Rivers Of New Zealand