Pittsburgh, Pennsylvania, 1991. High school freshman Charlie is a wallflower, always watching life from the sidelines, until two senior students, Sam and her stepbrother Patrick, become his mentors, helping him discover the joys of friendship, music and love.
Charlie
Logan Lerman
Sam
Emma Watson
Patrick
Ezra Miller
Mary Elizabeth
Mae Whitman
Mother
Kate Walsh
Father
Dylan McDermott
Aunt Helen
Melanie Lynskey
Candace
Nina Dobrev
Brad
Johnny Simmons
Dr. Burton
Joan Cusack
Mr. Anderson
Paul Rudd
Ponytail Derek
Nicholas Braun
Craig
Reece Thompson
Senior Bully
Patrick de Ledebur
Linebacker
Brian Balzerini
Nose Tackle
Tom Kruszewski
Susan
Julia Garner
Mr. Callahan
Tom Savini
Mean Freshman Girl
Emily Marie Callaway
Shakespeare Girl
Chelsea Zhang
Freshman Boy
Jesse Scheirer
Twin Girl #1
Justine Nicole Schaefer
Twin Girl #2
Julie Marie Schaefer
7-Year-Old Charlie
Leo Miles Farmerie
9-Year-Old Candace
Isabel Muschweck
Bob
Adam Hagenbuch
Alice
Erin Wilhelmi
Rocky MC
Jordan Paley
Chris
Zane Holtz
Policeman
Timothy Breslin
Emergency Room Policeman
Mark McClain Wilson
Emergency Room Doctor
Atticus Cain
Young Mom
Stacy Chbosky
Priest
Dihlon McManne
School Principal
Laurie Klatscher
Peter
Landon Pigg
Sam's Mom
Jennifer Enskat
Patrick's Dad
William L. Thomas
Candace's Friend
Morgan Wolk
Father of Twin Girls (uncredited)
Joe Fishel