Lam Chau (Chinese: 欖洲) was an island in Hong Kong.

It was one of the two original islands that made up the site of the current Hong Kong International Airport.

It had a narrow rocky shoreline and small hills (less than 100 m or 330 ft tall) covered by vegetation and shrub.

Like Chek Lap Kok, geologically Lam Chau consisted of granite.

The former island is now part of the southwest side of the airport grounds, located close to the western end of the south runway.