| Peixe River | |
| Source1 Location: | Paraíba state |
| Mouth Location: | Aparecida, Paraíba |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
The Peixe River is a river of Paraíba state in northeastern Brazil. It rises near Poço Dantas, and discharges into the Piranhas River.
It runs through the Valley of the Dinosaurs, a protected area holding dinosaur tracks, and gives its name to the municipality of São João do Rio do Peixe.