William Omar Bittman (August 6, 1931 – March 1, 2001) was an American trial lawyer and federal prosecutor. He is best known for prosecuting Teamsters President Jimmy Hoffa. Bittman is also mentioned in Carl Bernstein and Bob Woodward's 1974 book, All the President's Men, which details the reporting and investigation of the Watergate scandal which led to President Nixon's resignation.