Sir Steuart Spencer Davis, CMG (1875 – 3 April 1950) was a British colonial administrator. He was Governor of Saint Helena from 1932 to 1937.
After being called to the English bar by Gray's Inn in 1905, Davis served in St Kitts, the Gold Coast, Tanganyika, and Palestine before becoming Governor of Saint Helena in 1932. As governor, he named Jonathan the tortoise, currently the oldest known living land animal.