Dustin Hoffman as Babe

Laurence Olivier as Szell

Roy Scheider as Doc

William Devane as Janeway

Marthe Keller as Elsa

Fritz Weaver as Professor Biesenthal

Richard Bright as Karl

Marc Lawrence as Erhard

Allen Joseph as Babe's Father

Tito Goya as Melendez

Ben Dova as Szell's Brother

Lou Gilbert as Rosenbaum

Jacques Marin as LeClerc

James Wing Woo as Chen

Nicole Deslauriers as Nicole

Lotte Palfi Andor as Old Lady on 47th Street

Lionel Pina as Street Gang

Church as Street Gang

Tricoche as Street Gang

Jamie Tirelli as Street Gang

Wilfredo Hernández as Street Gang

Harry Goz as Jewelry Salesman

Michael Vale as Jewelry Salesman

Fred Stuthman as Jewelry Salesman

Lee Steele as Jewelry Salesman

William Martel as Bank Guard

Glenn Robards as Plainclothesman

Ric Carrott as Plainclothesman

Alma Beltran as Laundress

Daniel Nunez as Guard in Uruguay

Anthony Pena as Guard in Uruguay

Chuy Franco as Guard in Uruguay

Billy Kearns as Tourist Couple

Sally Wilson as Tourist Couple

Tom Ellis as T.V. Announcer

Bryant Fraser as Young Photographer

Igor Dega as Hotel Valet

Gene Bori as French Doctor

Annette Claudier as Nurse

Roger Etienne as Headwaiter

Raymond Serra as Truck Driver

John Garson as Bystander

Charlott Thyssen as Bystander

Estelle Omens as Bystander

Madge Kennedy as Lady in Bank

Jeff Palladini as Young Babe

Scott Price as Young Doc

Abebe Bikila as Self (archive footage) (uncredited)

S.C. Dacy as Innocent Bystander (uncredited)

Bobra Suiter as Woman (uncredited)

William Magerman as Accident Witness (uncredited)

Shawn McAllister as Mechanic (uncredited)

Irving Metzman as Accident Witness (uncredited)

Monty O'Grady as Agent (uncredited)

N.J. Osrag as Accident Witness (uncredited)

Harrison Ressler as Diamond District Patron (uncredited)

Louis Tanno as Man (uncredited)

Mark L. Taylor as Columbia Student (uncredited)

Treat Williams as Central Park Jogger (uncredited)