The Cattai National Park is a protected national park that is located in the Hawkesbury region of Sydney, New South Wales, in eastern Australia. The national park is situated approximately northwest of the Sydney central business district and approximately from . It includes Mitchell Park and Hope Farm.
Location and features
thumb|left|Cattai National Park picnic area
thumb|left|[[Thomas Arndell's cottage]]
The national park is situated on the Hawkesbury River and consists of three areas, Cattai Park at the junction of Cattai Creek and the Hawkesbury River, Hope Farm which adjoins Cattai Park to the north, and Mitchell Park approximately upstream along Cattai Creek.
The Cattai Homestead, which was constructed around 1820, and its curtilage is listed by the National Trust and the Australian Heritage Commission. The Hope Farm Mill on Hope Farm, which is also listed on the Register of the National Estate, was probably constructed around 1806 and is believed to be the oldest industrial site in Australia.