Carl Alexander Gibson-Hill (23 October 1911 – 18 August 1963) was an English medical doctor, naturalist, ornithologist and curator of Singapore’s Raffles Museum.
In 1938 Gibson-Hill married a fellow houseman, Margaret Halliday, before departing to serve as the resident medical officer on Christmas Island in the eastern Indian Ocean.
He was there from September 1938 to December 1940, following which he moved to work on the Cocos (Keeling) Islands for another ten months, where he was joined by his wife after she had completed her medical training.
Three months after being released from internment, in 1945 Gibson-Hill boarded a whaler bound for South Georgia on an expedition to collect specimens for the Falkland Islands Museum, and to photograph Antarctic seabirds.
He produced numerous scientific papers, often published in the Bulletin of the Raffles Museum and the Journal of the Malayan Branch of the Royal Asiatic Society.