Serido River
General data
- Name: Serido River
- Water system: Piranhas River
- Water type: River
- Progression: Piranhas River -> Atlantic Ocean -> Planet Earth
- Climates: Tropical
- Continents: South America
- Countries: Brazil
The Seridó River is a tributary of the Piranhas River in northeastern Brazil. The Seridó originates in the Borborema Plateau in Paraíba state, and flows northwest through Paraíba and Rio Grande do Norte states to join the Piranhas.