Lorentz National Park is a national park located in Papua, Indonesia, in the southwest of western New Guinea. With an area of 25,056 km², it is the largest national park in southeast Asia. In 1999 Lorentz was declared a World Heritage Site by UNESCO.

Lorentz National Park Office is the Technical Implementing Unit managing the Lorentz National Park conservation area which works under the coordination of the Directorate General of Natural Resources and Ecosystem Conservation of the Ministry of Environment and Forestry.