Robert Jan Mrazek (born November 6, 1945) is an American author, filmmaker, and former politician. He served as a Democratic member of the United States House of Representatives, representing New York's 3rd congressional district on Long Island for most of the 1980s. Since leaving Congress, Mrazek has authored twelve books, earning the American Library Association's top honor for military fiction, the Michael Shaara award for Civil War fiction, and Best Book (American History) from the Washington Post. He also wrote and co-directed the 2016 feature film The Congressman, which received the Breakout Achievement Award at the AARP's Film Awards in 2017.