| Houku River | |
| Map: | Zengwen River basin.png |
| Map Size: | 250px |
| Subdivision Type1: | Location |
| Subdivision Name1: | Taiwan |
| Source1: | 三角南山 |
| Source1 Elevation: | 1186m (3,891feet) |
| Mouth: | Zengwen River |
| Mouth Location: | Yujing District, Tainan |
| River System: | Zengwen River |
| Basin Size: | 161.4km2 |
The Houku River, also known as the Houjue River or Houjue Creek, is a 51km (32miles) river of southern Taiwan, and a tributary of the Zengwen River. The river drains an area of 161km2 in parts of Tainan, Chiayi County, and Kaohsiung City. The Nanhua Dam on the river is a major source of drinking water for metropolitan Kaohsiung.