Here are a few people who have stuttered or do stutter, but, you may not have known it:
Aesop - Greek storyteller.
Aristotle
Patrick Campbell - British humorist.
General Joshua Chamberlain - one of the heroes of the Battle of Gettysburg and college professor of literature (source: Military History magazine).
King Charles I - King of England, 1625-1649.
Winston Churchill - Prime Minister of Great Britain World War II, including examples of some of his speeches.
Charles Darwin - Naturalist and author of The Origin of Species.
King George VI - King of England, 1937-1952.
Lenin
Moses - Hebrew prophet.
Marilyn Monroe - Actress.
Napoleon the First
Isaac Newton - Scientist, developed the Law of Gravity.
Theodore Roosevelt
Jimmy Stewart - Actor.
George Washington
Rowan Atkinson - British actor who plays Mr. Bean.
Nicolas Brendon - movie star, reports that he stuttered significantly until after high school.
Ty Cobb - according to a biography, Cobb: A Biography by Al Stump (1994).
James Earl Jones - Actor.
Greg Louganis - Olympic diver.
Sam Neill - Actor.
Eric Roberts - actor.
Carly Simon - Singer.
Mel Tillis - Country-western singer.
Bruce Willis - Actor.