Cloudy Hill (九龍坑山) is a 440m high hill in Tai Po District of northeastern Hong Kong. It is located within Pat Sin Leng Country Park.
The source of the Ma Wat River is located on Cloudy Hill. Some part of the hiking trail is very difficult to walk. Stage 9 of the Wilson Trail starts from the top of the hill.
Coordinates: 22°29′N 114°10′E / 22.483°N 114.167°E / 22.483; 114.167