Steve Martin as Vincent "Vinnie" Antonelli

Rick Moranis as Barney Coopersmith

Joan Cusack as Hannah Stubbs

Melanie Mayron as Crystal Rybak

Bill Irwin as Kirby

Carol Kane as Shaldeen

William Hickey as Billy Sparrow / Johnny Bird

Deborah Rush as Linda

Daniel Stern as Will Stubbs

Jesse Bradford as Jamie

Corey Carrier as Tommie

Seth Jaffe as Umberto Mello

Robert Miranda as Lilo Mello

Ed Lauter as Underwood

Julie Bovasso as Vinnie's Mother

Colleen Camp as Dr. Margaret Snow Coopersmith

Gordon Currie as Wally Bunting

Raymond O'Connor as Dino

Troy Evans as Nicky

Dick Boccelli as Rocco

Ron Karabatsos as Ritchie

Tony DiBenedetto as Benny

Melissa Hurley as Angela

Leslie Cook as Marie

Darren Chuckry as Supermarket Manager

Duke Stroud as Supermarket Employee

Carol Ann Susi as Filomena

Frank Gio as Gaetano

Joel Polis as U.S. Attorney

Larry Block as Defense Attorney

Arthur Brauss as Judge

Greta Blackburn as Stewardess #1

Eva Charney as Stewardess #2

Ellen Albertini Dow as Nun

David Knell as Checker

John Harnagel as Motel Manager

LaWanda Page as Hotel Maid

Daniel Riordan as Removal Man

Thomas Wagner as Umpire

Jean Spray as Gatto

James Emery as FBI Man

Matt Roe as FBI Man

John Rogers as Policeman at Motel

Valerie Wildman as TV Reporter

Daniel Trent as Bailiff

Rudy E. Morrison as Maitre D'

Frank R. Roach as Judge

Jeff Fredricks as Booking Cop