Sham Wan (Chinese: 深灣) is a bay in the southeastern part of Lamma Island in Hong Kong.
It yielded evidence of people living on Lamma during the "Middle Neolithic" phase (c. 3800–3000 BC).
Historically, Sham Wan has also been a place for green sea turtles to lay eggs.
The endangered green turtles are a special group of marine organisms with distinctive navigation behaviour between their nesting, breeding, development and reproduction sites.
As Sham Wan is the only existing nesting site for green sea turtles in Hong Kong, the beach and adjacent waters are closed to the general public every year from 1 April to 31 October to allow the turtles to breed.