Give 'em Hell, Harry! is a 1975 biographical film which is a one-man show about former President of the United States Harry S. Truman. It stars James Whitmore.

During a speech by Truman attacking the Republicans during the 1948 Presidential election campaign a supporter yelled out, "Give 'em Hell, Harry!". Truman replied, "I don't give them Hell. I just tell the truth about them and they think it's Hell." Subsequently, "Give 'em Hell, Harry!" became a lifetime slogan for Truman supporters.

The movie was adapted by Samuel Gallu from his play. It was directed by Steve Binder .

It was nominated for the Academy Award for Best Actor (James Whitmore).