Big Wave Bay or Tai Long Wan () is a bay in the Southern District of Hong Kong. It is located on the eastern coast of Hong Kong Island, south of Cape Collinson and north of Shek O. This bay should not be confused with the bay with the same name in Sai Kung.
Big Wave Bay has a beach popular among surfers. It is also the site of a prehistoric rock carving, which is a declared monument.
Tai Long Wan Village () is located nearby.
Tai Long Wan is in Primary One Admission (POA) School Net 16. Within the school net are multiple aided schools (operated independently but funded with government money) and two government schools: Shau Kei Wan Government Primary School and Aldrich Bay Government Primary School.
The only access by road to Big Wave Bay is by Tai Tam Road, Shek O Road and then Big Wave Bay Road. The Hong Kong Government Gazette writes on April 12, 1935:
It is also the eastern end of the Hong Kong Trail, at the end of Section 8. This section coincides with the Dragon's Back trail going between Shek O and Big Wave Bay.