Russell Crowe

Character: John Nash

Jennifer Connelly

Character: Alicia Nash

Ed Harris

Character: William Parcher

Paul Bettany

Character: Charles Herman

Christopher Plummer

Character: Dr. Rosen

Adam Goldberg

Character: Richard Sol

Josh Lucas

Character: Martin Hansen

Anthony Rapp

Character: Bender

Jason Gray-Stanford

Character: Ainsley Neilson

Judd Hirsch

Character: Helinger

Austin Pendleton

Character: Thomas King

Vivien Cardone

Character: Marcee

Jillie Simon

Character: Bar Co-Ed

Victor Steinbach

Character: Professor Horner

Tanya Clarke

Character: Becky

Thomas F. Walsh

Character: Captain

Jesse Doran

Character: General

Kent Cassella

Character: Analyst

Patrick Blindauer

Character: MIT Student

John Blaylock

Character: Photographer

Roy Thinnes

Character: Governor

Anthony Easton

Character: Young Man

Cheryl Howard

Character: Harvard Administrator

Rance Howard

Character: White-Haired Patient

Jane Jenkins

Character: Code-Red Nurse

Darius Stone

Character: Adjunct

Josh Pais

Character: Princeton Professor

Alex Toma

Character: Toby

Valentina Cardinalli

Character: Joyce

Teagle F. Bougere

Character: Young Professor

David B. Allen

Character: John Nash Jr. (Teenager)

Michael Esper

Character: John Nash Jr. (Young Man)

Eva Burkley

Character: Girl at Bar

Amy Walz

Character: Blond in Bar

Tracey Toomey

Character: Brunette

Jennifer Weedon

Character: Brunette

Yvonne Thomas

Character: Brunette

Holly Pitrago

Character: Brunette

Isadore Rosenfeld

Character: Pen Ceremony Professor

Tommy Allen

Character: Pen Ceremony Professor

Dave Bayer

Character: Pen Ceremony Professor

Brian Keith Lewis

Character: Pen Ceremony Professor

Tom McNutt

Character: Pen Ceremony Professor

Will Dunham

Character: Pen Ceremony Professor

Glenn Roberts

Character: Pen Ceremony Professor

Ed Jupp Jr.

Character: Pen Ceremony Professor

Christopher Stockton

Character: Princeton Student

Gregory Dress

Character: Princeton Student

Carla Occhiogrosso

Character: Princeton Student

Matt Samson

Character: Princeton Student

Lyena Nomura

Character: Princeton Student

Kathleen Fellegara

Character: Insulin Treatment Nurse

Betsy Klompus

Character: Insulin Treatment Nurse

Stelio Savante

Character: Technician

Logan McCall

Character: Technician

Bob Broder

Character: Technician

Scott Fernstrom

Character: Trent Humphres (uncredited)

Ron Howard

Character: Man at Governor's Ball (uncredited)

Bryce Dallas Howard

Character: Harvard Student (uncredited)

Michael Arthur

Character: Army Captain (uncredited)

Brian Smyj

Character: Army Soldier (uncredited)

Michael C. Pierce

Character: Radio Operator (uncredited)

Alex Lorre

Character: Technician (uncredited)

John H. Tobin

Character: Shadow Figure (uncredited)

James Whalen

Character: Construction Chief (uncredited)

Nick Oddo

Character: Noisy Construction Worker (uncredited)

Ty Copeman

Character: Doctor (uncredited)

Jonah Falcon

Character: Mental Patient (uncredited)

Reggie Austin

Character: Pen Ceremony Professor (uncredited)

Robert Myers

Character: Professor (uncredited)

Dave Sweeney

Character: Campus Cop (uncredited)

Berly Ellis

Character: Princeton Tutor '78 (uncredited)

Michael Abbott Jr.

Character: Princeton Library Tutor (uncredited)

Liche Ariza

Character: Princeton Student (uncredited)

Peter Bonilla

Character: Princeton Student (uncredited)

Evan Hart

Character: Princeton Student (uncredited)

Jason Horton

Character: Princeton Student (uncredited)

Vivian Kalinov

Character: Princeton Student (uncredited)

Dory Manzour

Character: Princeton Student (uncredited)

Tiffany Marz

Character: Princeton Student (uncredited)

Ryan O'Connor

Character: Princeton Student (uncredited)

Deborah Rayne

Character: Princeton Student (uncredited)

Colby Ryan

Character: Princeton Student (uncredited)

Douglas Taurel

Character: Princeton Student (uncredited)

Jeffrey Christopher Todd

Character: Princeton Student (uncredited)

Ryan Tygh

Character: Princeton Math Grad (uncredited)

Erik Van Wyck

Character: Princeton Student (uncredited)

Cade Bittner

Character: Harvard Student (uncredited)

Fabrizio Fante

Character: Harvard Student (uncredited)

Seth Gabel

Character: Harvard Student (uncredited)

Monique Marissa Lukens

Character: Harvard Student (uncredited)

Phil Cirincione

Character: MIT Student (uncredited)

Scott Addison Clay

Character: MIT Student (uncredited)

Michael Fiore

Character: MIT Student (uncredited)

Reed Penney

Character: MIT Student (uncredited)

Sean Bennett

Character: Student (uncredited)

Rich Bryant

Character: Student (uncredited)

Jersey Carell

Character: Student (uncredited)

Gregory Gordon

Character: Student (uncredited)

Jarred Treiber

Character: Student (uncredited)