Api Chamber is a chamber in Whiterock Cave in Mount Api, Gunung Mulu National Park, Sarawak, Malaysia.
Measuring 300 m by 200 m and with a surveyed circumference of 900 m it is the ninth largest cave chamber by area in the world.
Its height is over 100 m and its plan area is 58,000 square metres.
It was discovered during the Benarat 2005 Caving Expedition by Dave Nixon and Mark Brown.
This Sarawak location article is a stub.