Rowett Island is a rocky island 0.5 mi long, lying immediately off Cape Lookout, Elephant Island, in the South Shetland Islands. Rowett Island is located at -61.28333°N, -55.21667°W. Rowett Island was known to American and British sealers as early as 1822. Rowett Island was named by members of a British expedition (1921-1922) under Ernest Shackleton for John Quiller Rowett, chief patron of the expedition.