Zac Efron as Jason

Miles Teller as Daniel

Michael B. Jordan as Mikey

Imogen Poots as Ellie Andrews

Mackenzie Davis as Chelsea

Jessica Lucas as Vera Walker

Addison Timlin as Alana

Josh Pais as Fred

Emily Meade as Christy

Evelina Turen as Sophie

Alysia Reiner as Amanda Silverman

Karen Ludwig as Mrs. Rose

Lola Glaudini as Sharon

Raul Casso as Diego

Tina Benko as Ellie's Mom

Joseph Adams as Ellie's Dad

John Rothman as Chelsea's Dad

Barbara Garrick as Chelsea's Mom

Dan Bittner as Preppy Guy

Kate Simses as Glasses

Tom Gormican as Waiter

Yuval Boim as Israeli Guy

Reif Larsen as Famous Author

Chris Grace as Deli Owner

Victor Slezak as Older Gentleman

Justin Nappi as Random Guy

Tom Riis Farrell as Male Executive

Julia Morrison as Beautiful Girl

Amanda A. Lederer as NYU Girl

D.B. Woodside as Harold (uncredited)

James P. Anderson as Doctor Murray (uncredited)

Rachel Heller as Rachel (uncredited)

Eugenia Kuzmina as Girl at the Bar (uncredited)

Alice Litvak as Young Girl at the Thanksgiving Party (uncredited)

Melissa Marino as Girl at the Bar (uncredited)

Gregg Micheals as Bookstore Customer (uncredited)

Uzimann as Cab Driver (uncredited)

Michael Kenneth Williams as Omar Little