The Caverna do Diabo State Park is a state park in the state of São Paulo, Brazil, established in 2008. It protects a mountainous area of Atlantic Forest, and is known for the dramatic Caverna da Tapagem or Caverna do Diabo, which draws thousands of visitors each year.

A state park in Brazil is a legally defined type of protected area operated by one of the states. Their goal is to preserve important or beautiful natural ecosystems. Public access is allowed subject to regulations defined by the responsible agency.