Sigourney Weaver Dana Barrett
Bill Murray Peter Venkman
Rick Moranis Louis Tully
Timothy Carhart Violinist
Annie Potts Janine Melnitz
Ernie Hudson Winston Zeddemore
Reginald VelJohnson Jail Guard
Dan Aykroyd Screenplay, Ray Stantz
Chuck Gaspar Special Effects Supervisor
William Atherton Walter Peck
Harold Ramis Screenplay, Egon Spengler
Tom McDermott Archbishop
Ivan Reitman Director, Producer, Zuul / Slimer (voice) (uncredited)
Sam Moses Hot Dog Vendor
László Kovács Director of Photography
Jordan Charney Dean Yager
Casey Kasem Casey Kasem (voice)
Larry King Larry King
John Rothman Library Administrator
David Margulies Mayor
Michael Ensign Hotel Manager
Elmer Bernstein Original Music Composer
Gemma La Mana Still Photographer
Rhoda Gemignani Real Estate Woman
John Bruno Visual Effects Art Director
Jennifer Runyon Female Student
Tom Morga Stunt Double
Tommy Hollis Mayor's Aide
Dione Taylor Hairstylist
Eldo Ray Estes Redheaded Man (uncredited)
Richard Edlund Visual Effects
Alice Drummond Librarian
Paddi Edwards Gozer (voice) (uncredited)
Slavitza Jovan Gozer
Colin J. Campbell Gaffer
Larry Holt Stunts
Gene S. Cantamessa Production Sound Mixer
Frank Patton III City Hall Cop (uncredited)
Debbie Gibson Birthday Girl in Tavern on the Green (uncredited)
Bill Walton Bill Walton (uncredited)
Robert M. Stevens Camera Operator
Leonard Engelman Makeup Artist
Roger Grimsby Roger Grimsby
Willow Hale Student at Columbia University (uncredited)
Frank Rivers Prisoner (uncredited)
Ray Parker, Jr. Theme Song Performance
Joe Cirillo Police Captain
Mario Todisco Prisoner (uncredited)
Eda Reiss Merin Louis's Neighbor
Stanley Grover Reporter
Richard Beggs Sound Designer
Joe Medjuck Man at Library (uncredited), Associate Producer
Ric Mancini Policeman at Apartment
Sheldon Kahn Editor
Jean Kasem Tall Woman at Party
Murray Rubin Man at Elevator
Norman Matlock Police Commissioner
Christopher Wynkoop TV Reporter
David E. Blewitt Editor
Joseph E. Thibo First Assistant Camera
John DeCuir Jr. Art Direction
Danny Nero Reporter (uncredited)
Les Fresholtz Sound Re-Recording Mixer
Suzy Benzinger Costume Design
Billy Bryan Stay Puft Marshmallow Man (uncredited)
Katterli Frauenfelder Second Assistant Director
Jack E. Ackerman Property Master
Frantz Turner Reporter
Steven Tash Male Student
Richmond L. Aguilar Gaffer
Vern Poore Sound Re-Recording Mixer
Rick Alexander Sound Re-Recording Mixer