Donald Gilbert Sanders (April 26, 1930 – September 26, 1999) was an American lawyer and a key figure in the Watergate investigation. As deputy minority counsel of the Senate Committee, he discovered the existence of President Richard Nixon's White House tapes. Nixon's refusal of a congressional subpoena to release the tapes constituted an article of impeachment against Nixon, and led to the president's subsequent resignation on August 9, 1974. Sanders served as an officer in the United States Marine Corps, Special Agent in the Federal Bureau of Investigation, Deputy Assistant Secretary of Defense, and director of investigations for the United States Senate Select Committee on Intelligence.