Cecil Dale Andrus was an American politician who served as 26th and 28th governor of Idaho, for a total of fourteen years. A Democrat, he also served as U.S. Secretary of the Interior from 1977 to 1981 during the Carter Administration. Andrus lost his first gubernatorial election in 1966 but won four and his fourteen years as governor is the most in state history. He is the most recent Democrat to have held the office.

The United States secretary of the interior is the head of the United States Department of the Interior. The secretary and the Department of the Interior are responsible for the management and conservation of most federal land along with natural resources, leading such agencies as the Bureau of Land Management, the United States Geological Survey, Bureau of Indian Affairs and the National Park Service. The secretary also serves on and appoints the private citizens on the National Park Foundation Board. The secretary is a member of the United States Cabinet and reports to the president of the United States. The function of the U.S. Department of the Interior is different from that of the interior minister designated in many other countries.