Kau Pui Lung (Chinese: 靠背壟), formerly Kau Pui Loong or Hau Pui Loong, is a valley and an area between Ma Tau Wai and To Kwa Wan, and west of Ma Tau Chung in Kowloon of Hong Kong. The area now full of schools near the junction of and , as well as along Farm Road, where Heep Yunn School is located.