Jack Nicholson 
 as Jack Napier / Joker

Michael Keaton 
 as Bruce Wayne / Batman

Kim Basinger 
 as Vicki Vale

Robert Wuhl 
 as Alexander Knox

Pat Hingle 
 as Commissioner James Gordon

Billy Dee Williams 
 as Harvey Dent

Michael Gough 
 as Alfred Pennyworth

Jack Palance 
 as Grissom

Jerry Hall 
 as Alicia

Tracey Walter 
 as Bob the Goon

Lee Wallace 
 as Mayor

William Hootkins 
 as Eckhardt

Richard Strange 
 as Goon

Carl Chase 
 as Goon

Mac McDonald 
 as Goon

George Lane Cooper 
 as Goon

Terence Plummer 
 as Goon

Philip Tan 
 as Goon

John Sterland 
 as Accountant

Edwin Craig 
 as Rotelli

Vincent Wong 
 as Crimelord 1

Joel Cutrara 
 as Crimelord 2

John Dair 
 as Ricorso

Christopher Fairbank 
 as Nic

George Roth 
 as Eddie

Kate Harper 
 as Anchorwoman

Bruce McGuire 
 as Anchorman

Richard Durden 
 as TV Director

Kit Hollerbach 
 as Becky

Lachele Carl 
 as TV Technician

Del Baker 
 as Napier Hood

Jazzer Jeyes 
 as Napier Hood

Wayne Michaels 
 as Napier Hood

Valentino Musetti 
 as Napier Hood

Rocky Taylor 
 as Napier Hood

Keith Edwards 
 as Reporter

Leon Herbert 
 as Reporter

Steve Plytas 
 as Doctor

Anthony Wellington 
 as Patrolman at Party

Amir M. Korangy 
 as Wine Steward

Hugo Blick 
 as Young Jack Napier

Charles Roskilly 
 as Young Bruce Wayne

Philip O'Brien 
 as Maitre d'

Michael Balfour 
 as Scientist

Garrick Hagon 
 as Dad

Liza Ross 
 as Mom

Adrian Meyers 
 as Jimmy

David Baxt 
 as Dr Wayne

Sharon Holm 
 as Mrs Wayne

Clyde Gatell 
 as Other Mugger

Jon Soresi 
 as Medic

Elliott Stein 
 as Man in Crowd

Sam Douglas 
 as Lawyer

Denis Lill 
 as Bob the Cartoonist

Paul Birchard 
 as Reporter

Paul Michael 
 as Cop

Pat Gorman 
 as Cop at Axis Chemicals

Chris Andrews 
 as Election Ceremony Patron

Stephanie English 
 as Woman in Green Coat

Barrie Holland 
 as Party Guest at Wayne Manor (uncredited)

Albert Evansky 
 as Crimelord #3 (uncredited)