Reginald VelJohnson Jail Guard
Sigourney Weaver Dana Barrett
Timothy Carhart Violinist
Annie Potts Janine Melnitz
Ivan Reitman Director, Producer, Zuul / Slimer (voice) (uncredited)
Rick Moranis Louis Tully
Dan Aykroyd Screenplay, Ray Stantz
Bill Murray Peter Venkman
Ernie Hudson Winston Zeddemore
Larry King Larry King
Harold Ramis Screenplay, Egon Spengler
Joe Medjuck Man at Library (uncredited), Associate Producer
Michael Ensign Hotel Manager
Tom McDermott Archbishop
John Bruno Visual Effects Art Director
Sam Moses Hot Dog Vendor
William Atherton Walter Peck
John Rothman Library Administrator
László Kovács Director of Photography
Jordan Charney Dean Yager
Casey Kasem Casey Kasem (voice)
David Margulies Mayor
Rhoda Gemignani Real Estate Woman
Tommy Hollis Mayor's Aide
Willow Hale Student at Columbia University (uncredited)
Jennifer Runyon Female Student
Mario Todisco Prisoner (uncredited)
Richard Edlund Visual Effects
Chuck Gaspar Special Effects Supervisor
Larry Holt Stunts
Richard Beggs Sound Designer
Katterli Frauenfelder Second Assistant Director
Alice Drummond Librarian
Slavitza Jovan Gozer
Tom Morga Stunt Double
Elmer Bernstein Original Music Composer
Paddi Edwards Gozer (voice) (uncredited)
Debbie Gibson Birthday Girl in Tavern on the Green (uncredited)
Bill Walton Bill Walton (uncredited)
Roger Grimsby Roger Grimsby
Les Fresholtz Sound Re-Recording Mixer
Ray Parker, Jr. Theme Song Performance
Joe Cirillo Police Captain
Eda Reiss Merin Louis's Neighbor
Stanley Grover Reporter
Ric Mancini Policeman at Apartment
Jean Kasem Tall Woman at Party
Gene S. Cantamessa Production Sound Mixer
Murray Rubin Man at Elevator
Rick Alexander Sound Re-Recording Mixer
Christopher Wynkoop TV Reporter
David E. Blewitt Editor
John DeCuir Jr. Art Direction
Frank Rivers Prisoner (uncredited)
Danny Nero Reporter (uncredited)
Norman Matlock Police Commissioner
Marvin March Set Decoration
Eldo Ray Estes Redheaded Man (uncredited)
Frantz Turner Reporter
Steven Tash Male Student
Richmond L. Aguilar Gaffer
Billy Bryan Stay Puft Marshmallow Man (uncredited)
Bernie Brillstein Executive Producer
John Ring Fire Commissioner
Dione Taylor Hairstylist
Gary Daigler First Assistant Director
Matteo Cafiso Boy at Hot Dog Stand (uncredited)
John DeCuir Production Design
Peter Costanza Man Fleeing Marshmallow Man (uncredited)
Kathryn Janssen Mrs. Van Hoffman
Kymberly Herrin Dream Ghost
Sheldon Kahn Editor