Benedict Cumberbatch Grinch (voice)
Rashida Jones Donna Lou Who (voice)
Chris Renaud Executive Producer
Tara Strong Additional Voices (voice)
Scarlett Estevez Izzy (voice)
Mindy Sterling Additional Voices (voice)
Geoff Vaughan Foley Artist
Lori Alan Additional Voices (voice)
Angela Lansbury Mayor McGerkle (voice)
Dennis Leonard Supervising Sound Editor
Chris Meledandri Producer
Michael Beattie Store Clerk (voice)
Kenan Thompson Bricklebaum (voice)
Jeannine Berger Post Production Supervisor
Danny Elfman Original Music Composer
Danny Mann Additional Voices (voice)
Evan Kishiyama Additional Voices (voice)
Willow Geer Additional Voices (voice)
Sam Lavagnino Ozzy (voice)
Laraine Newman Additional Voices (voice)
Tyler, The Creator Songs
Carlos Alazraqui Additional Voices (voice)
Carter Hastings Additional Voices (voice)
Jim Ward Additional Voices (voice)
Jess Harnell Additional Voices (voice)
Bill Farmer Additional Voices (voice)
Meilee Condron Additional Voices (Voice)
Dr. Seuss Book
Barbara Harris Additional Voices (voice), ADR Voice Casting
John DeMita Additional Voices (voice)
Mickie McGowan ADR Voice Casting
Brian T. Delaney Additional Voices (voice)
Audrey Geisel Executive Producer
Joel Swetow Additional Voices (voice)
Pharrell Williams Narrator (voice)
John Kassir Additional Voices (voice)
Aaron Fors Additional Voices (voice)
Scott Mosier Producer, Director, Additional Voices (voice)
Tommy Swerdlow Screenplay
Brett Hoffman Associate Producer
Cathy Cavadini Additional Voices (voice)
Juan Peralta Sound Re-Recording Mixer
Ramone Hamilton Axl (voice)
Cameron Seely Cindy Lou Who (voice)
Blake Collins Foley Mixer
Robert Taylor Associate Producer
Tucker Chandler Additional Voices (voice)
John Roesch Foley Artist
Regina Taufen Additional Voices (voice)
Janet Healy Producer
Townsend Coleman Additional Voices (voice)
Jeremy Maxwell Additional Voices (voice)
Cinzia Angelini Storyboard Artist
Benjamin Faure Animation
Alex Puccinelli Additional Voices (voice)
David Acord Sound Designer
Christopher Flick Foley Supervisor
Holly Sedillos Vocals
Chris Cartagena Editor
Bonnie Wild Sound Effects Editor
Michael LeSieur Screenplay
Tom Brown Music Arranger
Miguel Jiron Storyboard Artist
Yarrow Cheney Director
Doug Burch Additional Voices (voice)
Dave Rosenbaum Production Manager
Tristan O'Hare Groopert (voice)
Eileen Godoy Post Production Supervisor
Dashiell Priestley Additional Voices (voice)
Jim Likowski Foley Editor
Pascal Garneau Sound Effects Editor
Jonathan Greber Dialogue Editor