Kau Yi Chau (formerly Kau I Island or Kau-i-chau), also known as Tai Kau Yi Chau, is an uninhabited island located west of Victoria Harbour, between Peng Chau and Green Island in Hong Kong. It is located on the crossroad of sea routes, east to west and north to south. The ferry between Central (Hong Kong Island) and Mui Wo (Lantau Island) sails close to the south of the island. Administratively it is part of Islands District.