- Ghostbusters - Directer, Producer
- Ghostbusters II - Directer, Producer
- Extra outside firehouse
- Ghost Corps - Head
- Ghostbusters (2016 Movie) - Producer
While he had worked on a few earlier movies (small budget B-movies) his break was as one of the two Producers of National Lampoon's Animal House.
Ivan Reitman is most known for directing Ghostbusters and Ghostbusters II, along with Stripes and Meatballs. In Ghostbusters, Reitman provided all of the unearthly voices, such as Dana's demonic Zuul voice and Slimer, except for Gozer's.   In Ghostbusters II, Reitman makes a cameo in the film as a pedestrian walking past the Firehouse and crossing the street.
He also is known for Directing Legal Eagles, Kindergarten Cop, Junior, Fathers' Day, Six Days Seven Nights, Evolution.
- Father of Jason Reitman and Catherine Reitman.
- On page 12 of Ghostbusters Volume 2 Issue #1, I. Reitman is listed as one of the authors of the technical report.
- On page 3 of Ghostbusters Volume 2 Issue #13, behind Egon, Ray and Peter is Ivan Reitman.
- In the Ghostbusters: Mass Hysteria hard cover collection, on page five, Reitman is referenced in Dan Aykroyd's introduction.
- On the Regular Cover of Ghostbusters 101 #1, the map credit references Ivan Reitman.
- The Introduction for the Ghostbusters: Interdimensional Cross-Rip collection was written by Reitman.
- ↑ Ivan Reitman (2005). Ghostbusters- Commentary (2005) (DVD ts. 56:49-57:02). Columbia TriStar Home Video. Ivan Reitman says: "I actually do the voice, the deep voice of...that's me. I did Slimer and the voice that comes out of her here. "
- ↑ Shay, Don (November 1985). Making Ghostbusters, p. 127 annotation. New York Zoetrope, New York NY USA, ISBN 0918432685. Paragraph reads: "In an unusual twist on the directorial cameo, Dana's demonic voice -- reminiscent of Mercedes McCambridge's intonations in The Exorcist -- was actually that of Ivan Reitman. Reitman, in fact, provided all of the unearthly voices in the film, except that of Gozer."