Bill Murray
Peter Venkman
Harold Ramis
Egon Spengler, Screenplay
Sigourney Weaver
Dana Barrett
Ernie Hudson
Winston Zeddemore
Dan Aykroyd
Ray Stantz, Screenplay
Annie Potts
Janine Melnitz
Ivan Reitman
Zuul / Slimer (voice) (uncredited), Director, Producer
Rick Moranis
Louis Tully
Larry King
Larry King
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
Suzy Benzinger
Costume Design
László Kovács
Director of Photography
Jordan Charney
Dean Yager
Casey Kasem
Casey Kasem (voice)
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)
Tom Morga
Stunt Double
Richard Edlund
Visual Effects
Katterli Frauenfelder
Second Assistant Director
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
Frank Rivers
Prisoner (uncredited)
Ric Mancini
Policeman at Apartment
Jean Kasem
Tall Woman at Party
Chuck Gaspar
Special Effects Supervisor
Gene S. Cantamessa
Production Sound Mixer
Murray Rubin
Man at Elevator
Rick Alexander
Sound Re-Recording Mixer
Richard Beggs
Sound Designer
Eldo Ray Estes
Redheaded Man (uncredited)
John DeCuir Jr.
Art Direction
Danny Nero
Reporter (uncredited)
Norman Matlock
Police Commissioner
Marvin March
Set Decoration
Steven Tash
Male Student
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