The Campinhos State Park (Portuguese: Parque Estadual de Campinhos) is a state park in the state of Paraná, Brazil. The environment has been much degraded by human activity and is in the process of regeneration, but there are areas of the original Araucaria Forest. The main attraction is the 500 metres (1,600 ft) long Jesuits Cave, with many speleothems such as stalagmites and stalactites.
The Campinhos State Park is divided between the municipalities of Tunas do Paraná and Cerro Azul in the north of the metropolitan region of Curitiba, Paraná. It has an area of 336.98 hectares (832.7 acres) and a perimeter of 10,012 metres (32,848 ft). 4.22% is in Tunas of Paraná and 95.78% in Cerro Azul. The buffer zone covers about 6,143 hectares (15,180 acres) and includes parts of the municipalities of Tunas do Paraná, Cerro Azul, Bocaiúva do Sul and Rio Branco do Sul. It includes the basins of the Pulador and Ermida streams. The park is 63 kilometres (39 mi) from the state capital of Curitiba and 8 kilometres (5.0 mi) from Tunas do Paraná. The main access to the Park is by Federal Highway BR-476.
The region is mountainous, with average elevation of about 900 metres (3,000 ft). It has many limestone caves. The Gruta dos Jesuítas (Jesuits Cave) is the fifth largest of the state. The park is in the Ribeira de Iguape River basin, with an average elevation of 330 metres (1,080 ft), and is drained by part of the Pulador sub-basin. Outside the park the Pulador joins the Tigre River to form the Ponta Grossa River, a right tributary of the Ribeira.
The Campinhos State Park was created by state decree 31.013 of 20 July 1960. The main objective was to protect the caves of Conjunto Jesuítas/Fada, one of the most important caving sites of Paraná. It was expanded by state decree 5.768 of 5 June 2002. The consultative council was created by IAP decree 010 of 18 February 2003 with representatives of public and private bodies. The Management Plan was developed by GEEP – Açungui, financed by the National Environment Fund. Preparation included workshops with the community to gain consensus on activities and priorities. It was published in April 2003.