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