Willi Willi National Park, Nature reserve in North Coast region, New South Wales, Australia.

Willi Willi National Park covers 29,870 hectares between the Macleay and Hastings River valleys, from about 1,200 m on the eastern escarpment down to under 300 m. It holds one of Australia's best-preserved subtropical rainforests, alongside subalpine woodland, heath and eucalyptus forest. Kemps Pinnacle and Mount Banda Banda both rise above 1,100 m.

Willi Willi National Park was gazetted in April 1996, protecting about 29,870 hectares between the Macleay and Hastings River valleys. Parts of the area had already been listed in 1987 within the Gondwana Rainforests of Australia World Heritage Site, and the park joined the Australian National Heritage List in 2007.

The southern Wilson River area holds a picnic and barbecue ground with toilets on a spot loggers already used as a rest stop around 1890. Walking tracks start from there into the rainforest. The park also protects the Hastings River Mouse (Pseudomys oralis), the Greater Glider and the Tiger Quoll.

The park is easy to explore with multiple walking trails and a picnic area near Wilson River where waterfalls and natural pools can be found. Visitors should know the terrain is mountainous and sturdy footwear plus preparation for changing conditions are important.

The park is home to two striking mountain peaks rising above 1100 meters (3600 feet) that are visible from the city of Port Macquarie. These geological formations tower above the rainforest and serve as landmarks within an otherwise dense forest landscape.