| Comprido River | |
| Source1 Location: | São Paulo state |
| Mouth: | Paraíba do Sul |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
The Comprido River is a river of São Paulo state in southeastern Brazil. Rising in the municipality of Jacareí, it follows the boundary with São José dos Campos and before discharging into the Paraíba do Sul.