Ivan Reitman Director, Producer Bill Murray Doctor Peter Venkman Actor Dan Aykroyd Doctor Raymond Stantz Actor, Writer Harold Ramis Doctor Egon Spengler Actor, Writer Sigourney Weaver Dana Barrett, Zuul, The Gate Keeper Actor Rick Moranis Louis Tully, Vinz Clortho, The Key Master Actor Annie Potts Janine Melnitz Actor William Atherton Walter Peck Actor Ernie Hudson Winston Zeddemore Actor Bernie Brillstein Executive Producer Michael C. Gross Associate Producer Joe Medjuck Associate Producer László Kovács Cinematographer David E. Blewitt Film Editing Sheldon Kahn Film Editing Elmer Bernstein Original Music Ray Parker Jr. Original Songs John DeCuir Production Design John DeCuir Jr. Art Director Robert Drumheller Set Decoration Marvin March Set Decoration Theoni V. Aldredge Costume Design Karen Rea Casting Leonard Engelman Makeup Artist