Deaths
- January 26 — Mike Connors
- January 26 — Barbara Hale
- February 17 — Warren Frost
- March 14 — Tsunehiko Watase
- April 18 — Yvonne Monlaur
- April 19 — Dick Contino
- April 23 — Kathleen Crowley
- April 26 — Jonathan Demme
- May 8 — Ken Miller
- May 18 — Jacque Fresco
- May 24 — Del "Sonny" West
- May 31 — Mimi Heinrich
- June 9 — Adam West
- June 13 — Jack Ong
- July 5 — John Karlsen
- July 15 — Martin Landau
- July 17 — Harvey Atkin
- July 22 — Jimmy Clem
- July 23 — Elijah Perry
- July 30 — Vincent G. Cox
- August 3 — Ty Hardin
- August 7 — Haruo Nakajima
- August 31 — Richard Anderson
- September 13 — Stewart Moss
- October 4 — Ben Bates
- October 11 — Don Pedro Colley
- October 17 — Harry Stradling Jr.
- November 10 — Erika Remberg
- November 15 — Keith Barron
- December 6 — Conrad Brooks
- December 11 — Suzanna Leigh
Episode Premieres
- April 14 — Reptilicus
- April 14 — Cry Wilderness
- April 14 — The Time Travelers
- April 14 — Avalanche
- April 14 — The Beast of Hollow Mountain
- April 14 — Starcrash
- April 14 — The Land That Time Forgot
- April 14 — The Loves of Hercules
- April 14 — Yongary - Monster from the Deep
- April 14 — Wizards of the Lost Kingdom
- April 14 — Wizards of the Lost Kingdom II
- April 14 — Carnival Magic
- April 14 — Il Natale Che Quasi Non Fu
- April 14 — At the Earth's Core
Special Premieres
- March 10 — RiffTrax releases Ator, the Fighting Eagle (later to become Experiment #1206)
- April 7 — RiffTrax Presents releases Angels Revenge (previously Experiment #622)
- August 3 — RiffTrax releases Final Justice (previously Experiment #1008)
- November 23 — Turkey Day '17
Home Media Releases
- January 31 — Mystery Science Theater 3000 – Volume IV
- March 28 — Mystery Science Theater 3000: Volume XXXVIII
- May 16 — Mystery Science Theater 3000 – Volume V
- August 8 — Cinematic Titanic: The Complete Collection
- October 17 — Mystery Science Theater 3000 – Volume VI
- November — Season 11: Collector's Edition
- November 21 — Mystery Science Theater 3000: Volume XXXIX
Events
- February 12 — Patton Oswalt wins the Best Comedy Album Award for "Patton Oswalt: Talking for Clapping" at the 59th Annual Grammy Awards.
- June — Instead of Tweeting debuts.
- July 6 — Mystery Science Theater 3000 Live! - Watch Out for Snakes! Tour premieres at the Shubert Theatre in Boston, Massachusetts.
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