| Guiers | |
| Pushpin Map: | France#France Auvergne-Rhône-Alpes |
| Subdivision Type1: | Country |
| Subdivision Name1: | France |
| Mouth: | Rhône |
| Length: | 49.9km (31miles) |
| Tributaries Left: | Ainan |
| Tributaries Right: | Thiers, Guiers Vif |
The Guiers (in French pronounced as /ɡje/) is a river in the Isère and Savoie departments of eastern France. It is 49.9km (31miles) long. It rises in the Chartreuse Mountains. The part upstream from the confluence with the Guiers Vif (literally Live Guiers) is also called Guiers Mort (literally Dead Guiers).