Tung Lung Chau, previously known as Nam Tong Island or Nam Fat Tong is an island located off the tip of the Clear Water Bay Peninsula in the New Territories of Hong Kong. It is also referred to by Hong Kong people as Tung Lung To or Tung Lung Island (東龍島). The island is largely uninhabited. Administratively, it belongs to Sai Kung District.

Prehistoric Hong Kong is the period between the arrival of the first humans in Hong Kong and the start of recorded Chinese history during the Han dynasty. The history of the southern region is reckoned to have been first recorded in 214 BC with Qin Shi Huang conquering the Baiyue and creating the Jiaozhou province.