Jim Carrey Mr. Popper
Carla Gugino Amanda
Charles L. Campbell Old Tom Popper, Sr. (voice)
Jeffrey Tambor Mr. Gremmins
Clark Gregg Nat Jones
Angela Lansbury Mrs. Van Gundy
Lee Moore Reginald
Madeline Carroll Janie
Chad Sayn Stunts
David Krumholtz Kent
Ophelia Lovibond Pippi
James Chen Fish & Game Officer
Joseph D'Onofrio Random Man on Street
James Tupper Rick
John Davis Producer
Maxwell Perry Cotton Billy
Timothy Shannon Transportation Captain
Dominic Chianese Reader
Derek Dauchy Executive Producer
Stuart Wurtzel Production Design
Jeff Lima Freddy
Mark Mangini Sound Designer, Sound Supervisor
Jonathan Filley Co-Producer, Unit Production Manager
Dominic Colón Tito
Chris Beetem Young Developer
Ellen Christiansen Set Decoration
Angel Caban Fishmonger
G.A. Aguilar Stunt Coordinator, Second Unit Director
Ron Bartlett Sound Re-Recording Mixer
John Morris Screenplay
Daniel Stewart Sherman Zoo Security Guard
Joel Holland Video Assist Operator
William Charles Mitchell Yates
Renee Burke Script Supervisor
Alicia Stevenson Foley Artist
Stephen A. Pope Stunt Coordinator
John G. Velez Gaffer
Doug Hemphill Sound Re-Recording Mixer
Philip Baker Hall Franklin
Ann Roth Costume Design
Betsy Aidem Tavern Hostess
Rafael Osorio Marine & Waterfowl Officer
Nora Kasarda Art Department Coordinator
Olga Merediz Nanny
Dylan Clark Marshall Young Tommy Popper #2
Frank Ciornei Klaus
Christopher T. Welch ADR Supervisor
Mike Chock Sound Effects Editor
David Lucarelli ADR Recordist
Peter Epstein Stunts
Aja Frary Stunt Double
Kelli Barrett Tommy's Mom
Piero Mura Sound Effects Editor
Donald Flick Foley Editor
Elaine Kussack Gremmins's Secretary
Gary Cergol Graphic Designer
J.R. Horne Arnold
Lukasz Jogalla Second Unit Director of Photography
Nick South Music Editor
Linda Fields Hill Associate Producer
Charlie Marroquin Key Grip
Cynthia Kirchner Pulse Lounge Beautiful Girl (uncredited)
Matt Power Second Assistant Director
Mark Waters Director, Executive Producer
Charleen Richards-Steeves ADR Mixer
Julie Feiner Dialogue Editor
Charlie Semine Cop #2 (Quint)
Andrew Stewart-Jones Animal Control Guy
Curtis Shumaker Sanitation Officer
Henry Kelemen Young Tommy Popper
Brian T. Delaney Young Tom Popper, Sr. (voice)
Danny Michael Sound Mixer