Zach Galligan
Billy Peltzer
Phoebe Cates
Kate Beringer
Robert Prosky
Grandpa Fred
Christopher Lee
Doctor Catheter
Haviland Morris
Marla Bloodstone
Dick Miller
Murray Futterman
Jackie Joseph
Sheila Futterman
Gedde Watanabe
Mr. Katsuji
Kathleen Freeman
Microwave Marge
Henry Gibson
Employee Fired for Smoking
Rick Ducommun
Clamp Center Security Guard
Isiah Whitlock Jr.
Fireman
Dean Norris
SWAT Team Leader
May Quigley
Hallway Employee
Tony Winters
Hallway Employee
Jacque Lynn Colton
Lady at Elevator
Stéphanie Menuez
Clamp's Secretary
Dale Swann
Clamp Center Surveillance Supervisor
Jeff Swanson
Forster's Assistant
Vladimir Bibic
Taxi Driver
Sarah Lilly
Reporter in Lobby
Paul Bartel
Theatre Manager
Belinda Balaski
Movie Theater Mom
Nicky Rose
Movie Theatre Kid
Kenneth Tobey
Projectionist
Leonard Maltin
Leonard Maltin
Michael Salort
TV Reporter
Diane Sainte-Marie
TV Reporter at Wing's
Kristi Witker
TV Anchor in Bar
Archie Hahn
Forster's Technician
Leslie Neale
Forster's Technician
Ron Fassler
Forster's Technician
Time Winters
Forster's Technician
Lisa Mende
Yogurt Customer
Patrika Darbo
Yogurt Customer
Jerry Goldsmith
Yogurt Customer
Howie Mandel
Gizmo (voice)
Frank Welker
Mohawk (voice)
Tony Randall
Brain Gremlin (voice)
Mark Dodson
Gremlins (voice)
Kirk R. Thatcher
Gremlins (voice)
Neil Ross
Announcer (voice)
Jeff Bergman
Bugs Bunny / Daffy Duck / Porky Pig (voice)
Joe Dante
Grandpa Fred Director (uncredited)