| Hoyoux | |
| Mouth Coordinates: | 50.5197°N 5.2383°W |
| Subdivision Type1: | Country |
| Length: | 28km (17miles) |
The Hoyoux (in French pronounced as /ɔju/) is a river of Belgium, a right tributary of the Meuse. It flows for 28km (17miles) through the province of Liège in the northern-central part of the country. It flows into the Meuse in Huy.