Tuen Mun New Town (Chinese: 屯門新市鎮) is a new town developed by Hong Kong Government in Tuen Mun, New Territories, Hong Kong in the 1970s. At the time of planning in 1965, the satellite town, as new towns were then known, was named Castle Peak.
The development model is similar to Sha Tin New Town, constructed around a town centre (Tuen Mun Town Centre).
However, jobs and public facilities in the town are inadequate, just as in Tin Shui Wai New Town, certain social problems like low income, juvenile problems, drug abuse, controversies in use of public places, such as noise problems due to playing musical instruments in Tuen Mun Town Park.
Coordinates: 22°23′35″N 113°58′39″E / 22.393°N 113.9775°E