This is a list of the longest rivers in New Zealand, and some other prominent rivers, ordered by length.
South Island rivers are marked "SI", and North Island rivers "NI".
See main article: Rivers of New Zealand.
| Rank | Name | Island | Length (km) | Length (mi) |
|---|---|---|---|---|
| 1 | North | 425km (264miles) | ||
| 2 | Clutha / Mata-Au | South | 322km (200miles) | |
| 3 | Whanganui | North | 290km (180miles) | |
| 4 | Taieri | South | 288km (179miles) | |
| 5 | Rangitīkei | North | 241km (150miles) | |
| 6 | Mataura | South | 240km (150miles) | |
| 7 | Waiau (Southland) | South | 217km (135miles) | |
| 8= | Waiau Toa / Clarence | South | 209km (130miles) | |
| 8= | Waitaki | South | 209km (130miles) | |
| 10 | Ōreti | South | 203km (126miles) | |
| 11 | Rangitaiki | North | 193km (120miles) | |
| 12 | Manawatū | North | 182km (113miles) | |
| 13 | Buller / Kawatiri | South | 177km (110miles) | |
| 14 | Waihou | North | 175km (109miles) | |
| 15 | Mohaka | North | 172km (107miles) | |
| 16= | Waiau Uwha | South | 169km (105miles) | |
| 16= | Wairau | South | 169km (105miles) | |
| 18= | Whangaehu | North | 161km (100miles) | |
| 18= | Waimakariri | South | 161km (100miles) | |
| 20 | Mōkau | North | 158NaN |