| Cubatãozinho River | |
| Pushpin Map: | Brazil |
| Mouth: | Cubatão River |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
The Cubatãozinho River is a river of Paraná state in southern Brazil.
The river rises in the Guaricana National Park, created in 2014, which protects a mountainous area of Atlantic Forest.The Lagoa do Parado Municipal Nature Park, which protects an area of marshland rich in biodiversity, lies on the left bank of the river.
The river originates in the Serra das Canavieiras between Guaratuba and Morretes. It has a course of around 60 km, being navigable by canoes until Porto Limeira. Its tributaries are Ribeirão da Prata, Rio dos Henriques, Guarajuva, Canavieiras, Parado, Furta Maré and Rasgado.