Jason Biggs

Jim Levenstein

Alyson Hannigan

Michelle Flaherty-Levenstein

Seann William Scott

Steve Stifler

Chris Klein

Chris 'Oz' Ostreicher

Thomas Ian Nicholas

Kevin Myers

Tara Reid

Victoria 'Vicky' Lathum

Mena Suvari

Heather

Eddie Kaye Thomas

Paul Finch

John Cho

MILF Guy #2

Jennifer Coolidge

Stifler's Mom

Eugene Levy

Jim's Father

Natasha Lyonne

Jessica

Dania Ramirez

Selena

Katrina Bowden

Mia

Ali Cobrin

Kara

Shannon Elizabeth

Nadia

Chris Owen

Chuck Sherman

Justin Isfeld

Justin

Neil Patrick Harris

Celebrity Dance-Off Host

Molly Cheek

Jim's Mother

Jesse Malinowski

Kyle

Pam Green

Ali

Valarie Kobrovsky

Prateek's Hot Girlfriend

Chuck Hittinger

AJ

Jay Harrington

Dr. Ron

Charlene Amoia

Ellie

Robert Hayes

Bo

Vik Sahay

Prateek Duraiswamy

Stevie Ray Dallimore

Kara's Dad

Kim Wall

Kara's Mom

Jennifer Sun Bell

Madison

Autumn Dial

Alexa

Rebecca Field

Loni

Vince Pisani

Male Alum

Jen Kober

Ingrid

Raheem Babalola

Deshaun

Benjamin Arthur

Chester

Hart Turner

Reed

Matt Mangum

Adam

Brian Mahoney

Police Officer

Helenna Santos

Oz Fan

Michael Beasley

Reggie

Jenna Willis

Computer (voice)

Jeremy Ambler

MILF Guy at Bar

Walter Hendrix III

Celebrity Dance-Off Patron

Ashlyn Henson

Young Loni Lipstein

Rebecca De Mornay

Finch's Mom (uncredited)