Marty McFly / Seamus McFly
Dr. Emmett Brown
Clara Clayton
Buford 'Mad Dog' Tannen / Biff Tannen (as Thomas F. Wilson)
Maggie McFly / Lorraine McFly
Jennifer
Bartender
Barbwire Salesman
Saloon Old Timer #3
Saloon Old Timer #2
Saloon Old Timer #1
Marshal Strickland
Dave McFly
Linda McFly
George McFly
Buford Tannen's Gang / Needles' Gang
Buford Tannen's Gang (as Sean Gregory Sullivan)
Buford Tannen's Gang
Mayor
Colt Gun Salesman
Engineer
Deputy
Needles
Needles' Gang
Mortician
Strickland's Son
Jules
Verne
Celebration Man
Photographer
Pie Lady
Festival Man #1
Festival Man #2
Festival Dance Caller
Townsman #1
Townsman #2 (as Michael John Mills)
Townsman #3
Eyepatch
Toothless
Ticket Agent
Conductor
Joey
Train Fireman
Barbwire Salesman's Companion
Boy with Gun
Copernicus
Einstein
Party Band Member #1 (uncredited)
Townswoman (uncredited)
Party Band Member #2 (uncredited)
Party Band Member #3 (uncredited)
Juggler (uncredited)
Outlaw (uncredited)
Prostitute at Palace Saloon (uncredited)