Infinity

Matthew Broderick

Richard Feynman

Patricia Arquette

Arline Greenbaum

Peter Riegert

Mel Feynman

?

Jeffrey Force

Young Richard

?

David Drew Gallagher

Harold

Raffi Di Blasio

Robert

Josh Keaton

David

James Hong

Abacus Adder

?

Melissa DeLizia

Young Joan

Peter Michael Goetz

Dr. Gell-Mann

Kelly Wolf

Nurse Kate

Mary Pat Gleason

County Nurse #2

Joyce Van Patten

Aunt Ruth

James Le Gros

John Wheeler

Željko Ivanek

Bill Price