The Founder

Michael Keaton

Ray Kroc

Nick Offerman

Dick McDonald

John Carroll Lynch

Mac McDonald

Linda Cardellini

Joan Smith

B.J. Novak

Harry J. Sonneborn

Laura Dern

Ethel Kroc

Justin Randell Brooke

Fred Turner

Kate Kneeland

June Martino

Patrick Wilson

Rollie Smith

Griff Furst

Jim Zien

Wilbur Fitzgerald

Jerry Cullen

David de Vries

Jack Horford

Andrew Benator

Leonard Rosenblatt

Cara Mantella

Myra Rosenblatt

Randall Taylor

Owner (Ed's Drive-In)

Lacey King

Car Hop Girl (Ed's Drive-In)

Jeremy Madden

Dennis

Rebecca Ray

Car Hop Girl (Joe's Drive-In)

Adam Rosenberg

Employee (San Bernadino)

Jacinte Blankenship

Woman (San Bernadino)

Charles Green

Loan Officer #1

David Silverman

Loan Officer #2

Mike Pniewski

Harvey Peltz

Catherine Dyer

Mrs. Horford

Susan Williams

Mrs. Cullen

Franco Castan

Art Wolodarsky

Kenny Alfonso

Kroc Corporate Lawyer

Kabby Borders

Cheerleader #1

Nicolette Goetz

Cheerleader #2

Lauren Denham

Cheerleader #3

Abbey Ferrell

Cheerleader #4

Justin Alvarez

Photographer

Victor McCay

Kroc Divorce Lawyer

Steve Coulter

Doctor Reeves

Ric Reitz

Will Davis (LA Times Reporter)

Joy Glover Walters

Mother (San Bernadino)

Makabe Ganey

Little Boy

Jody Thompson

Customer (Schaumburg)

Chris Greene

Grand Opening Customer

Kimberly Banta

Bingo Caller

Devon Ogden

Gorgeous Blonde

Gerald Duckworth

Owner (Joe's Drive-In)

Jen Cohen

Female Passenger

David Zyler

Dr. Nelson

Joseph Sanfelippo

McDonald's Announcer (voice)

Conrad Whitaker

Limo Driver (uncredited)

Afemo Omilami

Mr. Merriman (uncredited)