Gilly Hopkins
Sophie Nélisse
Maime Trotter
Kathy Bates
Ticket Agent
Toby Turner
Principal Evans
Richard Topol
Stevie
Salvatore Rossi
Ed
Cameron Clifford
Mrs. Hong
Julee Cerda
Principal Maynard
Johanna Day
Clerk
Katherine Paterson
Cookie Monster (voice)
Frank Oz
Additional Voices (voice)
Blanca Camacho
Ramirez
Gavin Westerlind
Nonnie Hopkins
Glenn Close
Neighbor
Sienna Stuebe
Neighbor and Student
Athena Stuebe
Loyzo
Liz Imperio
School student
Connor Keegan Dosch
Attendee
Cynthia Basinet
Woman with Book
Cara Cooper
Mr Randolph
Bill Cobbs
Miss Harris
Octavia Spencer
Courtney Rutherford Hopkins
Julia Stiles
Agnes
Clare Foley
Ellis
Billy Magnussen
W.E.
Zachary Hernandez
Rajeem
Sammy Pignalosa
Director
Stephen Herek
First Assistant Director
Scott Lazar
Novel
Original Music Composer
Mark Isham
Writer
David Paterson
Editor
David Leonard
Director of Photography
David M. Dunlap
Casting
Avy Kaufman
Sound Mixer
Anton Gold