Lane Cove National Park is a small national park located within metropolitan Sydney. The park is located about ten kilometres (6 mi) north-west of the Sydney CBD. The park consists of land near the banks of the Lane Cove River, which rises near Hornsby and flows generally south-east into Port Jackson.
The park includes areas of land which are part of Ku-Ring-Gai, Ryde, and Hornsby local government areas with small areas of the park in Willoughby, Lane Cove and Hunter's Hill local government area on the banks of the lower reaches of the river. The park is surrounded on all sides by developed suburban areas and except for the upper northwestern region is never more than a kilometre (3,280 ft) wide. Much of the park is of fairly rugged terrain on the slopes of the river valley and covered by dense bush. The characteristics of the bush vary depending upon soils and topography, historical logging and clearing and accessibility. Parts of the park are affected by weed infestations.