| Perequê-Áçu River | |
| Source1 Location: | Rio de Janeiro state |
| Mouth: | Ribeira Bay |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
The Perequê-Áçu River is a river of Rio de Janeiro state in southeastern Brazil.
Mangroves and Rhizophora mangle can be found along the river.[1]