Template:Realworld
- For information dealing with this year in the timeline of the fictional Star Trek universe, see 1990.
Events
January
- 1 January - TNG: "The Defector" airs.
- 5 January - Bart LaRue dies.
- 8 January - TNG: "The Hunted" airs.
- 29 January - TNG: "The High Ground" airs.
- Pocket TNG #10: A Rock and a Hard Place by Peter David is published by Pocket Books.
February
- 5 February - TNG: "Deja Q" airs.
- 12 February - TNG: "A Matter of Perspective" airs.
- 13 February - Ken Lynch dies.
- 19 February - TNG: "Yesterday's Enterprise" airs. Denise Crosby makes her first guest appearance on TNG since her departure in 1988.
- Pocket TOS #48: Rules of Engagement by Peter Morwood is published by Pocket Books.
March
- 12 March - TNG: "The Offspring" airs.
- 19 March - TNG: "Sins of the Father" airs.
- 26 March - TNG: "Allegiance" airs.
- Pocket TNG Metamorphosis by Jean Lorrah is published by Pocket Books.
April
- 2 April - TNG: "Captain's Holiday" airs.
- 23 April - TNG: "Tin Man" airs.
- 30 April - TNG: "Hollow Pursuits" airs, the first to feature Dwight Schultz as TNG and later VOY recurring character Reginald Barclay.
- Pocket TOS #49: The Pandora Principle by Carolyn Clowes is published by Pocket Books.
May
- 7 May - TNG: "The Most Toys" airs.
- UK VHS releases: TOS volume 25, TNG volume 2.
- 10 May - Susan Oliver dies.
- 14 May - TNG: "Sarek" airs. Mark Lenard guests as Ambassador Sarek, the first major crossover appearance of an original series character.
- 18 May - Jill Ireland dies.
- 21 May - Franklyn Seales dies.
- 25 May - Vic Tayback dies.
- 28 May - TNG: "Ménage à Troi" airs.
- Pocket TNG #11: Gulliver's Fugitives by Keith Sharee is published by Pocket Books.
June
- 4 June - TNG: "Transfigurations" airs.
- UK VHS release: TOS volume 26.
- 18 June - TNG: "The Best of Both Worlds" airs and is the first cliffhanger of the series. Jean-Luc Picard is assimilated by the Borg and becomes Locutus of Borg, fueling rumors that Patrick Stewart may be leaving the series.
- 19 June - Joseph Mullendore dies.
- Pocket TOS #50: Doctor's Orders by Diane Duane is published by Pocket Books.
July
- 2 July - UK VHS releases: TOS volume 27, "The Cage" All Colour Collectors Edition, TNG volume 3.
- Production begins on TNG Season 4.
- Pocket TNG #12: Doomsday World by Carmen Carter, Peter David, Michael Jan Friedman, & Robert Greenberger is published by Pocket Books.
August
- 6 August - UK VHS releases: TOS volume 28, TNG volume 4.
September
- 3 September - UK VHS releases: TOS volumes 29, 30 & 31 (ending season 2 and beginning season 3 releases), TNG volume 5.
- 24 September - Star Trek: The Next Generation enters its fourth season, resolving the Borg story with "The Best of Both Worlds, Part II". Picard is rescued and Stewart remains a member of the TNG cast.
- 26 September - Star Trek: The Next Generation premieres in the UK on the BBC.
- Pocket TOS Prime Directive by Garfield & Judith Reeves-Stevens is published by Pocket Books.
- Pocket TNG #13: The Eyes of the Beholders by A.C. Crispin is published by Pocket Books.
October
- 1 October - TNG: "Family" airs.
- UK VHS releases: TOS volumes 32 & 33, TNG volume 6.
- 8 October - TNG: "Brothers" airs.
- 15 October - TNG: "Suddenly Human" airs.
- 22 October - TNG: "Remember Me" airs.
- 29 October - TNG: "Legacy" airs.
- 30 October - Tom Steele dies.
- Pocket TOS #51: Enemy Unseen by V.E. Mitchell is published by Pocket Books.
November
- 5 November - TNG: "Reunion" airs.
- UK VHS release: TNG volume 7.
- 12 November - TNG: "Future Imperfect" airs.
- 14 November - Sol Kaplan dies.
- 19 November - Wil Wheaton's final episode as a regular TNG castmember, "Final Mission", airs.
- Pocket TNG #14: Exiles by Howard Weinstein is published by Pocket Books.
December
- 17 December - Ashley Edner is born.
- 31 December - TNG: "The Loss" airs.
- Pocket TOS #52: Home Is the Hunter by Dana Kramer-Rolls is published by Pocket Books.
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