| Tainhas State Park | |
|---|---|
| Parque Estadual do Tainhas | |
 Cachoeira do Passo do S | |
  | |
| Nearest city | Jaquirana, Rio Grande do Sul |
| Coordinates | 29°05′05″S 50°21′58″W / 29.084606°S 50.366°W |
| Area | 6,654.67 hectares (16,444.0 acres) |
| Designation | State park |
| Created | 12 March 1975 |
The Tainhas State Park (Portuguese: Parque Estadual do Tainhas) is a state park in the state of Rio Grande do Sul, Brazil. It protects forests in the valley of the Tainhas River surrounded by open fields. The main attraction is the Cachoeira do Passo do S, a waterfall.