| Marombas River | |
| Source1 Location: | Santa Catarina state |
| Mouth Location: | Canoas River |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
The Marombas River (Portuguese, Rio Marombas) is a river of Santa Catarina state in southeastern Brazil. It is a tributary of the Canoas River and part of the Uruguay River basin.