Who Had the Biggest Impact on the 20th Century?

Oppenheimer, obviously.

I also wanted to add:

Theodore Roosevelt

Vladmir Lenin

Margaret Thatcher

Nelson Mandela

Henry Ford

Bill Gates

Charlie Chaplin

Marie Curie

Muhammad Ali

He WAS the person who has the biggest impact on the 20th century!

He?

Karl Marx

Yes, he lived in the 1800s. But his thoughts and how humans interpreted and acted out on them all played out in the 20th century.

If it’s a negative impact, I would say Hitler.

Mahler?

It would be a very interesting world if that had been the case...

Actor Eric Porter narrated The World at War: A Special Presentation which featured footage of Stalin and Churchill among others.

Thomas Edison

I don't see how Princess Di had any cultural effect on the century.

Madonna

Very idiosyncratic list, and not even the courtesy of “other.”

Narcissist.

Alan Turing, the father of modern computing

From his breaking of the Enigma code, to his forming of the concepts of computer algorithms and computation, to his envisioning of A.I. and its future, the World War would not have been won, man would have not have gone into space, the moon, and beyond and none of the technology that almost invisibly surrounds us and makes our lives possible today would exist.

His personal story is less impactful, but remarkably illustrative of how far society has come since he, a war hero, was hounded and treated like a criminal for being gay, undergoing chemical castration rather than being sent to prison.

Arnold Stang

Richard Simmons

How dare you leave Vivian Vance off!