Sierra Cristal National Park (Spanish: Parque Nacional Sierra Cristal) is a national park in Cuba.

It is located in the municipalities of Mayarí and Sagua de Tánamo in southern Holguín Province.

It was the first National Park created in Cuba in 1930,[2] and covers an area of 185.37 km2 (71.57 sq mi).

Cuban pine (Pinus cubensis) can reach heights of 30 m (98 ft) in this area.

A research center established in 1988 in Pinares de Mayarí monitors the ecology of the region.