| Whanaki River | |
|---|---|
 Route of the Whanaki River | |
  Mouth of the Whanaki River .png)  Whanaki River (New Zealand) | |
| Location | |
| Country | New Zealand |
| Region | Auckland Region |
| Physical characteristics | |
| Source | |
| • coordinates | 36°18′49″S 174°29′48″E / 36.3135°S 174.4968°E |
| Mouth | Tauhoa River |
• coordinates | 36°20′27″S 174°25′59″E / 36.3409°S 174.4331°E |
| Length | 10 km (6 mi) |
| Basin features | |
| Progression | Whanaki River → Tauhoa River → Kaipara Harbour → Tasman Sea |
The Whanaki River is a river of the Auckland Region of New Zealand's North Island. It flows southwest from its origins near Wellsford to reach the Tauhoa River, an arm of the Kaipara Harbour.