John Lloyd Young as Francis 'Frankie Valli' Castelluccio

Vincent Piazza as Gaetano 'Tommy' DeVito

Michael Lomenda as Nick Massi

Erich Bergen as Bob Gaudio

Christopher Walken as Angelo 'Gyp' DeCarlo

Mike Doyle as Bob Crewe

Joseph Russo as Joe 'Joey' Pesci

Kathrine Narducci as Mary Rinaldi

Freya Tingley as Francine Valli

Johnny Cannizzaro as Nick DeVito

James Madio as Stosh

Francesca Eastwood as Waitress

Steve Schirripa as Vito

Barry Livingston as Accountant

Alexis Krause as Party Girl

Jeremy Luke as Donnie

Silvia Kal as Producer's Wife

Billy Gardell as Our Sons Owner

John Griffin as Billy Dixon

Elizabeth Hunter as Francine (age 7)

Lacey Hannan as Angela

Renée Marino as Mary Delgado

Erica Piccininni as Lorraine

Steve Monroe as Barry Belson

Rob Marnell as Joe Long

Troy Grant as Ed Sullivan

Grant Roberts as Johnny

Sean Whalen as Engneer

Kara Pacitto as Bubble-Head #2

Michael Patrick McGill as Officer Mike

Nancy La Scala as Art Loving Woman

Clint Ward as Officer Stanley

Jackie Seiden as Angel #2

Matt Nolan as Engineer #2

Meagan Holder as Jazz Singer

Joe Abraham as Rockabilly Singer

Phil Abrams as Publisher #3

Joe Howard as Priest

Ben Rauch as New Season #4

Bill Watterson as Backup Musician #2

Annika Noelle as Nick's Date

Derek Easley as Biker Inmate

Kimmy Gatewood as Angel #1

Alexandra Ruddy as Waitress

Keith Loneker as Knuckles

Marco Tazioli as Bad-News Boyfriend

David Newton as Guy at the Bar

Donnie Kehr as Norm Waxman

Scott Vance as Detective #1

Kyli Rae as Angel #3

Travis Nicholson as Country Singer

Allison Wilhelm as Coat Check Girl

Tye Edwards as Crewe Bartender

Jon Paul Burkhart as Journalist

Lou Volpe as Frankie's Father

David Crane as Holiday Inn Clerk

Lou George as Publisher #1

Michael Butler Murray as Backup Musician #1

Michael Lanahan as Publisher #2

Aria Pullman as Attractive Woman

Jacqueline Mazarella as Angry Woman

Danielle Souza as Scantily Clad Woman

Miles Aubrey as Charles Calello

Johnny Dinu as New Seasons #3

Maggie Beal as Antonia Valli

Jeff DePaoli as Stage Manager

Vincent Selhorst-Jones as Hank Majewski

Angel Murphy as Jazz-Cat

Grace Kelley as Francine (age 4)

Annie O'Donnell as Nun

John Duerler as Bartender

Louis Lombardi as Trulio

James P. Bennett as Stage Hand (uncredited)