Kevin Owen Foley is a former South Australian politician who served as 11th Deputy Premier of South Australia and additionally Treasurer of South Australia in the Rann government from 2002 to 2011 for the South Australian Branch of the Australian Labor Party. He is the longest-serving deputy premier and the third longest-serving treasurer in South Australian history.

The deputy premier of South Australia is the second-most senior officer in the Government of South Australia. The deputy premiership is a ministerial portfolio in the Cabinet of South Australia, and the deputy premier is appointed by the governor on the advice of the premier of South Australia.