Deaths
- January 5 — Phil Harvey
- January 6 — Antonio Sabato
- January 10 — Barry Oringer
- January 14 — Peter Mark Richman
- January 16 — Jim MacGeorge
- January 19 — John Scherer
- January 24 — Sonny Fox
- January 29 — Walker Boone
- February 5 — Christopher Plummer
- February 15 — Sandro Dori
- February 20 — David de Keyser
- March 3 — William P. Cartlidge
- April 2 — George Manasse
- April 7 — James Hampton
- April 24 — Shunsuke Kikuchi
- April 29 — Johnny Crawford
- April 30 — Claudia Barrett
- May 1 — Willy Kurant
- May 11 — Neil Connery
- May 11 — Buddy Van Horn
- May 18 — Vladimir Fyodorov
- July 5 — William Smith
- July 5 — Roger Cudney
- July 10 — Jefferson Richard
- July 27 — Anthony Parker
- August 19 — Sonny Chiba
- August 21 — Masaya Nihei
- September 8 — Arthur Metrano
- September 15 — Joel Rapp
- September 16 — Juli Reding
- September 19 — Timothy Donnelly
- September 28 — Tommy Kirk
- October 10 — Bob Herron
- October 19 — Jack Angel
- November 9 — Jerry Douglas
- November 9 — Roy Holder
Events
- January 12 — The Mads livestream riff of a second night of shorts.
- February 9 — The Mads livestream riff of The Choppers.
- February 22 — The Mads launch their YouTube channel.
- March 9 — The Mads livestream riff of Phantom From Space.
- April 7 — Let's Make More MST3K & Build THE GIZMOPLEX! goes live.
- April 13 — The Mads livestream riff of a third night of shorts.
- April 26 — MakeMoreMST3K: Livestream I
- May 1 — MakeMoreMST3K: Livestream IV
- May 7 — The Final Countdown, Part II
- May 11 — The Mads livestream riff of T-Bird Gang.
- June 8 — The Mads livestream riff of The Lost Missile.
- July 13 — The Mads livestream riff of a fourth night of shorts.
- August 6 — The Mindless Summer premieres.
- August 10 — The Mads livestream riff of The Beach Girls and the Monster.
- September 3 — The Mindless Summer concludes.
- September 14 — The Mads livestream riff of The Brain Eaters.
- September 25 — Elvira, Mistress of the Dark hosts a live-streaming special on Shudder to commemorate the 40th Anniversary of the character's television debut.
- October 12 — The Mads livestream riff of a fifth night of shorts.
- October 30 — Mystery Science Theater 3000 Live - Time Bubble Tour premieres at The Pullo Center in York, Pennsylvania.
