Deep Throat is the pseudonym given to the secret informant who provided information in 1972 to Bob Woodward, who shared it with Carl Bernstein. Woodward and Bernstein were reporters for The Washington Post, and Deep Throat provided key details about the involvement of U.S. president Richard Nixon's administration in what came to be known as the Watergate scandal. In 2005, 31 years after Nixon's resignation and 11 years after Nixon's death, a family attorney stated that former Federal Bureau of Investigation (FBI) Associate Director Mark Felt was Deep Throat. By then, Felt was suffering from dementia and had previously denied being Deep Throat, but Woodward and Bernstein then confirmed the attorney's claim.

Robert Upshur Woodward is an American investigative journalist. He started working for The Washington Post as a reporter in 1971 and now holds the title of associate editor.