Ash has seen this movie.
After losing their academic posts at a prestigious university, a team of parapsychologists goes into business as proton-pack-toting "ghostbusters" who exterminate ghouls, hobgoblins and supernatural pests of all stripes. An ad campaign pays off when a knockout cellist hires the squad to purge her swanky digs of demons that appear to be living in her refrigerator.
| Peter Venkman | Bill Murray |
| Ray Stantz | Dan Aykroyd |
| Dana Barrett | Sigourney Weaver |
| Egon Spengler | Harold Ramis |
| Louis Tully | Rick Moranis |
| Janine Melnitz | Annie Potts |
| Walter Peck | William Atherton |
| Winston Zeddemore | Ernie Hudson |
| Gozer | Slavitza Jovan |
| Mayor | David Margulies |
| Male Student | Steven Tash |
| Female Student | Jennifer Runyon |
| Hotel Manager | Michael Ensign |
| Librarian | Alice Drummond |
| Dean Yager | Jordan Charney |
| Violinist | Timothy Carhart |
| Library Administrator | John Rothman |
| Archbishop | Tom McDermott |
| Roger Grimsby | Roger Grimsby |
| Larry King | Larry King |
| Joe Franklin | Joe Franklin |
| Casey Kasem (voice) | Casey Kasem |
| Fire Commissioner | John Ring |
| Police Commissioner | Norman Matlock |
| Police Captain | Joe Cirillo |
| Police Seargeant | Joe Schmieg |
| Jail Guard | Reginald VelJohnson |
| Real Estate Woman | Rhoda Gemignani |
| Man at Elevator | Murray Rubin |
| Con Edison Man | Larry Dilg |
| Coachman | Danny Stone |
| Woman at Party | Patty Freedman |
| Tall Woman at Party | Jean Kasem |
| Doorman | Lenny Del Genio |
| Chambermaid | Frances E. Nealy |
| Hot Dog Vendor | Sam Moses |
| TV Reporter | Christopher Wynkoop |
| Businessman in Cab | Winston May |
| Mayor's Aide | Tommy Hollis |
| Louis's Neighbor | Eda Reiss Merin |
| Policeman at Apartment | Ric Mancini |
| Mrs. Van Hoffman | Kathryn Janssen |
| Reporter | Stanley Grover |
| Reporter | Carol Ann Henry |
| Reporter | James Hardie |
| Reporter | Frantz Turner |
| Reporter | Nancy Kelly |
| Ted Fleming | Paul Trafas |
| Annette Fleming | Cheryl Birchenfield |
| Library Ghost | Ruth Oliver |
| Dream Ghost | Kymberly Herrin |
| Stay Puft Marshmallow Man (uncredited) | Billy Bryan |
| T-Shirt Vendor (uncredited) | Frankie Como |
| Man Fleeing Marshmallow Man (uncredited) | Peter Costanza |
| Patrolman Matthews (uncredited) | John De Bello |
| Gozer (voice) (uncredited) | Paddi Edwards |
| Redheaded Man (uncredited) | Eldo Ray Estes |
| Hare Krishna acolyte (uncredited) | Brute Force |
| Birthday Girl in Tavern on the Green (uncredited) | Debbie Gibson |
| Student at Columbia University (uncredited) | Willow Hale |
| Library Patron (uncredited) | Jon Hayden |
| Man Behind Barricade (uncredited) | Ron Jeremy |
| Man in Taxi (uncredited) | Joseph Marzano |
| Man at Library (uncredited) | Joe Medjuck |
| Reporter (uncredited) | Danny Nero |
| City Hall Cop (uncredited) | Frank Patton III |
| Terror Dog (uncredited) | Harrison Ray |
| Zuul / Slimer (voice) (uncredited) | Ivan Reitman |
| Prisoner (uncredited) | Frank Rivers |
| Prisoner (uncredited) | Mario Todisco |
| Bill Walton (uncredited) | Bill Walton |
| Slimer (uncredited) | Mark Bryan Wilson |
| Hotel Guest (uncredited) | George Sasaki |
