Kenneth Lee Salazar is an American lawyer, politician, and diplomat who is the United States ambassador to Mexico. He previously served as the 50th United States Secretary of the Interior in the administration of President Barack Obama from 2009 to 2013. A member of the Democratic Party, he previously was a United States Senator from Colorado from 2005 to 2009. He and Mel Martínez (R-Florida) were the first Hispanic U.S. senators since 1977; they were joined by Bob Menendez in 2006. Prior to his election to the U.S. Senate, he served as Attorney General of Colorado from 1999 to 2005.

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.