Tai Hang Sai Estate (Chinese: 大坑西邨) is a private housing estate in Shek Kip Mei, Kowloon, Hong Kong. It is located between Shek Kip Mei Estate and Tai Hang Tung Estate, near MTR Shek Kip Mei station. It consists of 8 residential buildings which were built in 1965 and 1977 respectively. Although it is rental housing, it was developed by a privately owned company, unlike other public housing estates which are built and managed by either Hong Kong Housing Authority or Hong Kong Housing Society.