Shane Brennan (born 1957, Bendigo, Victoria, Australia) is an Australian-born U.S.-based television writer and producer, best known as the executive producer of the American CBS drama NCIS, as well as the creator of the NCIS spin-off series, NCIS: Los Angeles.
Brennan's other television credits include Special Squad, The Flying Doctors, All Together Now, King & Maxwell, State Coroner, Stingers, Flipper, CSI: Miami, and Summerland. By 1981, he had abandoned journalism for television scriptwriting. He has early credits on Special Squad, Prime Time, In Between, Embassy, The Flying Doctors, Altogether Now and Ocean Girl.
From the mid-1990s he worked on American cable shows shot in Australia – of which Flipper is the only named example in IMDB. That gave him exposure, friends in the U.S. and an agent. As he said, "I started travelling backwards and forwards for about five years – usually four or five times a year, coming for two or three weeks at a time, doing lots and lots of meetings, all at my expense."
Brennan succeeded Donald P. Bellisario as the showrunner on NCIS, handing the day-to-day showrunner operations over to Gary Glasberg after season 8. He became the showrunner of NCIS: Los Angeles and remained an executive producer of NCIS until the end of the eleventh season. His last credited episode as executive producer of NCIS was the season 11 finale episode, "Honor Thy Father".
In July 2016, it was announced that Brennan was stepping down as showrunner of NCIS: Los Angeles and that he was handing the reins over to R. Scott Gemmill.
- In Between (1987 miniseries)
- Ocean Girl (1994) (writer, 1 episode: "Romance")
- NCIS, executive producer / writer / show-runner
- NCIS: Los Angeles, executive producer / writer / show-runner
- Keveney, Bill (22 September 2009). "Shane Brennan of 'NCIS': The hardest-working man in TV biz". USA Today. Gannett Co. Inc. Retrieved 23 March 2011.
- Profile, screenhub.com.au; accessed 15 April 2014.