How old was Robert De Niro in Once Upon a Time in America?

You might be surprised to learn how young—or old—some stars were in iconic scenes. It reveals something about timing, talent, and opportunity. We’re about to uncover that piece of the puzzle.

While Once Upon a Time in America was being made, Robert De Niro was:

40 years old

Based on our estimate, that was the actual age of the celebrity at the time.

The shown age corresponds to the celebrity’s age at the very start of the release year of Once Upon a Time in America:

January 1, 1984

And the day Robert De Niro was born, which is:

August 17, 1943

Because movies often premiere within a year of starting production, Robert De Niro might have been either one year younger or older while filming some scenes.