Jonah Hill as Noah Griffith

Landry Bender as Blithe Pedulla

Max Records as Slater Pedulla

Kevin Hernandez as Rodrigo Pedulla

Ari Graynor as Marisa Lewis

Sam Rockwell as Karl

Kylie Bunbury as Roxanne

Erin Daniels as Mrs. Pedulla

D.W. Moffett as Dr. Pedulla

JB Smoove as Julio

Jessica Hecht as Sandy Griffith

Bruce Altman as Jim Griffith

Method Man as Jacolby

Sean Patrick Doyle as Garv

Alex Wolff as Clayton

Jack Krizmanich as Ricky Fontaine

Grace Aronds as Twin #1

Jane Aronds as Twin #2

Samira Wiley as Tina

Sammuel Soifer as Benji Gillespie

Wendy Hoopes as Bethany

Ethan M. Davis as Ashton Griffith

Reggie Alvin Green as Soul Baby

Gracie Lawrence as Wendy Sapperstein

Jackie Hoffman as Mrs. Sapperstein

Angel Picard-Ami as Ricky Fontaine's Girlfriend

Lou Carbonneau as Maitre' D

Alysia Joy Powell as Kid City Employee

Nick Sandow as Officer Frank

Nicky Katt as Officer Petite

Eddie Rouse as Lounge Singer

Jonathan Forte as Guy on Subway Platform

Dreama Walker as Stephanie

Ernie Anastos as News Anchor

Dari Alexander as News Broadcaster #2

Kevin Townley as Valet

Trevor Zhou as Asian Fish Monger

Henry Kwan as Asian Man #1

Michael G. Chin as Asian Man #2

Ron Phippen as Guy Having Sex

Jessica DiGiovanni as Girl Having Sex

Victoria Beltran as Warhol Model (uncredited)

Gary Cherkassky as Disc Jockey (uncredited)

Tom Coughlin as Wedding Guest (uncredited)

Donato DeMarinis as Valet Attendant (uncredited)

Dennis Jay Funny as Smooth Bar Dude

Deanna Gibson as Party Guest (uncredited)

Jian Leonardo as Asian Man with Smoke (uncredited)

Jeffrey Mowery as Local (uncredited)

Len Murach as Taxi Driver (uncredited)

Kate Shine as Girl on the Subway (uncredited)

Joseph Urban as War Veteran (uncredited)

Barbara Vincent as Bar Mitzvah Guest (uncredited)

Paul Weaver as Bar Mitzvah Guest (uncredited)