Chatham Island is the largest island in New Zealand's Chatham Islands group.
Chatham Island(s) may also refer to:
Australia Chatham Island (Western Australia), in the Great Southern region
Canada Chatham Islands (British Columbia)
Chile Chatham Island, Chile
Ecuador A former name for San Cristóbal Island, Galapagos, Ecuador
India Chatham Island (Andaman), part of the Andaman chain
New Zealand Chatham Islands, New Zealand, in the Pacific Ocean (local names Rekohu and Wharekauri)
See also Chatham (disambiguation)