Elliot Richardson, American lieutenant and politician, 11th United States Secretary of Defense (died 1999)

Elliot Lee Richardson was an American lawyer and Republican politician. As a member of the cabinets of Richard Nixon and Gerald Ford between 1970 and 1977, Richardson is one of two men in United States history to hold four cabinet positions. As United States Attorney General, Richardson played a prominent role in the Watergate scandal when he resigned in protest against President Nixon's order to fire special prosecutor Archibald Cox. His resignation precipitated a crisis of confidence in Nixon which ultimately led to the president's resignation.

The United States secretary of defense is the head of the United States Department of Defense (DoD), the executive department of the U.S. Armed Forces, and is a high-ranking member of the federal cabinet. The secretary of defense's position of command and authority over the military is second only to that of the president of the United States, who is the commander-in-chief. This position corresponds to what is generally known as a defense minister in many other countries. The president appoints the secretary of defense with the advice and consent of the Senate, and is by custom a member of the Cabinet and by law a member of the National Security Council.