Charles Joseph Bonaparte, American lawyer and politician, 46th United States Attorney General (d. 1921)
Charles Joseph Bonaparte (; June 9, 1851 – June 28, 1921) was an American lawyer and political activist for progressive and liberal causes. Originally from Baltimore, Maryland, he served in the cabinet of the 26th U.S. president, Theodore Roosevelt.

Bonaparte was the U.S. Secretary of the Navy and later the U.S. Attorney General. During his tenure as the attorney general, he created the Bureau of Investigation which later grew and expanded by the 1920s under the director J. Edgar Hoover (1895–1972), as the Federal Bureau of Investigation (FBI). It was so renamed in 1935. He was a great-nephew of French Emperor Napoleon.Bonaparte was one of the founders, and for a time the president, of the National Municipal League. He was also a long time activist for the rights of black residents of his city.