The Shing Mun Tunnels are a system of tunnels and viaducts in the New Territories, Hong Kong connecting the new towns of Tsuen Wan to the west and Sha Tin to the east. It is part of Route 9.
Opened in 1990, it is made up of three sections, each with twin 2-lane tunnels (one each way). The westerly pair passes through Ma Tsz Keng (Smuggler's Ridge) near Shing Mun Reservoir, where it gets its name from; the easterly pair passes through Cham Shan (Needle Hill) and is linked to the westerly pair by two viaducts over Lower Shing Mun Reservoir. The toll plaza and bus interchange is located outside the Tsuen Wan end of the tunnel. The tunnels lead to Cheung Pei Shan Road and connects Wo Yi Hop Interchange in Tsuen Wan, and Shing Mun Tunnel Road in the east which links Tai Wai Road and ends at Tai Po Road.