| Nascentes do Rio Parnaíba National Park | |
| Alt Name: | Parque Nacional das Nascentes do Rio Parnaíba |
| Iucn Category: | II |
| Map: | Brazil |
| Relief: | yes |
| Nearest City: | Gilbués, Piauí |
| Coordinates: | -10.05°N -45.9°W |
| Designation: | National park |
| Created: | 16 July 2002 |
| Administrator: | ICMBio |
Nascentes do Rio Parnaíba National Park (Portuguese: Parque Nacional das Nascentes do Rio Parnaíba) is a national park of Brazil.
The park is in the cerrado biome.It covers .It was established on 16 July 2002, and is administered by the Chico Mendes Institute for Biodiversity Conservation.The park lies in parts of the municipalities of Formosa do Rio Preto in Bahia, Lizarda, Mateiros and São Félix do Tocantins in Tocantins, Alto Parnaíba in Maranhão, and Barreiras do Piauí, Corrente, Gilbués and São Gonçalo do Gurguéia in Piauí.
Protected species in the park include the jaguar (Panthera onca), cougar (Puma concolor) and giant armadillo (Priodontes maximus).