Selangor State Park, State park and natural reserve in Gombak District, Malaysia.

Selangor State Park covers 914.41 square kilometres of forested highland in Gombak District, mostly above 300 metres with slopes steeper than 25 degrees. It protects the upper catchments of the Bernam, Selangor, Klang and Langat rivers and feeds five reservoirs. The Klang Gates Quartz Ridge, a white milky quartz outcrop about 14 km long and up to 50 m wide, runs from Taman Seri Gombak to Kampung Kemensah.

The park was gazetted on 25 January 2007 under the National Forestry Act Enactment 2005 of Selangor, covering 914.41 square kilometres. At its establishment it was the second largest park in Peninsular Malaysia after Taman Negara. It is managed by the Forestry Department of Selangor.

Communities living near the park have kept their traditional ways of life alive for many generations. They share knowledge about the forest and help protect it through their presence and daily practices.

The park serves as a water source for nearby regions and can be visited throughout the year. Drier months offer easier access to trails and cave areas, making them better for exploration.

The Klang Gates Quartz Ridge, made entirely of white milky quartz, runs about 14 km above ground and reaches up to 50 m wide in places. Estimated at 170 million years old, it stretches from Taman Seri Gombak to Kampung Kemensah, with Klang Gates Dam built in the natural gap between Bukit Batu Tabor and Bukit Chondong.