| Cubuy River | |
| Source1 Location: | Sierra de Luquillo in Naguabo close to El Toro. |
| Subdivision Type1: | Commonwealth |
| Subdivision Name1: | Puerto Rico |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Naguabo |
The Cubuy River is a river of Puerto Rico located in El Yunque National Forest.