| Hawdon River | |
| Pushpin Map: | New Zealand#New Zealand South Island |
| Pushpin Map Size: | 270px |
| Pushpin Map Caption: | Mouth of the Hawdon River |
| Source1: | Mount Hunt |
| Source1 Coordinates: | -42.8794°N 171.7478°W |
| Mouth Location: | Waimakariri River |
| Mouth Coordinates: | -43.0014°N 171.7388°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Length: | 17km (11miles) |
| Progression: | Hawdon River → Waimakariri River → Pegasus Bay → Pacific Ocean |
| Tributaries Left: | East Hawdon Stream |
| Tributaries Right: | Twin Fall Stream, Discovery Stream, Sudden Valley Stream |
The Hawdon River is a river of New Zealand. One of the headwaters of Canterbury's Waimakariri River, it flows south through Arthur's Pass National Park, reaching the Waimakariri to the north of the settlement of Cass.