Marramarra National Park

Marramarra National Park New South Wales
IUCN category II (national park)
View of Berowra Creek from Marramarra National Park
Marramarra National Park
Nearest town or city	Sydney
Coordinates	33°31′30″S 151°03′28″E / 33.52500°S 151.05778°E / -33.52500; 151.05778Coordinates: 33°31′30″S 151°03′28″E / 33.52500°S 151.05778°E / -33.52500; 151.05778
Established	28 December 1979 (1979-12-28)
Area	117.85 km2 (45.5 sq mi)
Managing authorities	NSW National Parks & Wildlife Service
Website	Marramarra National Park
See also	Protected areas of New South Wales

Marramarra National Park is a protected national park that is located in the Hawkesbury region of northwestern Sydney, New South Wales, in eastern Australia. The 11,785-hectare (29,120-acre) national park is situated approximately 40 kilometres (25 mi) northwest of the Sydney central business district.

The park is bounded by the Hawkesbury River in the north; Berowra Creek in the east; and private land to the south and west. The national park may be accessed from Wisemans Ferry via the Old Northern Road or from Hornsby via the Galston Road through the Galston Gorge.

The park is administered by Ku-ring-gai Chase National Park. It offers bushwalkers a wide range of environments, from the mangrove communities along Marramarra Creek to the drier, sclerophyll scrub along the ridges. Access is provided predominantly by fire trails and service roads, frequently alongside power lines, with no dedicated walking tracks.

Cobah Creek

View of the Hawkesbury River from the northern ridges of the national park

A hut in Big Bay

View of Mangrove Creek from the northern part of the national park

Ruins along the northern ridge of the national park, parallel to the Hawkesbury River