The Wollemi National Park (/ˈwɒləmaɪ/) is a protected national park and wilderness area that is located in the Central West and Hunter region of New South Wales, in eastern Australia. The 501,703-hectare (1,239,740-acre) park, the second largest national park in New South Wales, contains the 361,113-hectare (892,330-acre) Wollemi Wilderness – the largest such wilderness area in Australia – and is situated approximately 130 kilometres (81 mi) northwest of Sydney.
The Wollemi National Park is one of the eight protected areas that, in 2000, was inscribed to form part of the UNESCO World Heritage-listed Greater Blue Mountains Area. The Wollemi National Park is the most north-westerly of the eight protected areas within the World Heritage Site. The national park forms part of the Great Dividing Range.