Template:Realworld
- For information dealing with this year in the timeline of the fictional Star Trek universe, see 2004.
2004
January
- 17 January - Albert Henderson and Noble Willingham die.
- 25 January - Jerry Greenwood dies.
- 26 January - Cameron McCulloch dies.
- 27 January - Star Trek VI: The Undiscovered Country (Special Edition) is released on Region 1 DVD.
February
- 12 February - Harriet Leider dies.
- 16 February - Bill Oakley dies.
- 24 February - Star Trek: Voyager: The Complete First Season is released on Region 1 DVD.
March
- 3 March - Cecily Adams dies.
- 7 March - Paul Winfield dies.
April
- 1 April - Ward Botsford dies.
May
- 13 May - Betty Matsushita dies.
- 18 May - Star Trek: Voyager: The Complete Second Season is released on Region 1 DVD.
June
- 4 June - Charles Correll dies.
July
- 6 July - Star Trek: Voyager: The Complete Third Season is released on Region 1 DVD.
- - Jimmie F. Skaggs dies.
- 21 July - Jerry Goldsmith (composer of five Star Trek films as well as the title themes for Star Trek: The Next Generation and Star Trek: Voyager) dies of prostate cancer.
- News is published that James Doohan has been diagnosed with Alzheimer's disease.
August
- 3 August - Star Trek: The Next Generation - Jean-Luc Picard Collection is released on Region 1 DVD.
- 30 August - James Doohan receives a star on the Hollywood Walk of Fame, his final planned public appearance.
- 31 August - Star Trek: The Original Series: The Complete First Season is released on Region 1 DVD. The sets replace the single, two episode per disc releases of 1999 and 2000.
September
- 7 September - Star Trek Generations (Special Edition) is scheduled for release on Region 1 DVD. It is delayed three weeks when an error stating trailers would be included on the bonus disc is identified on the packaging.
- 28 September - Star Trek: Voyager: The Complete Fourth Season is released on Region 1 DVD.
- - Star Trek Generations (Special Edition) is finally released on Region 1 DVD.
- 29 September - Shimon Wincelberg dies.
October
- 8 October - ENT Season 4 premieres with ENT: "Storm Front".
- 25 October - Burt "Skip" Burnam dies.
- 28 October - Charles F. Wheeler dies.
November
- 2 November - Star Trek: The Original Series: The Complete Second Season is released on Region 1 DVD.
- 3 November - Dave Perna dies.
- 6 November - Elizabeth Rogers dies.
- 9 November - Star Trek: Voyager: The Complete Fifth Season is released on Region 1 DVD.
- 12 November - Walter Irwin dies.
- 16 November - Christopher T. Gerrity dies.
December
- 7 December - Star Trek: Voyager: The Complete Sixth Season is released on Region 1 DVD.
- 14 December - Star Trek: The Original Series: The Complete Third Season is released on Region 1 DVD.
- 21 December - Star Trek: Voyager: The Complete Seventh Season is released on Region 1 DVD.
- 23 December - Frank Orsatti dies.
- 29 December - William Boyett dies.
- 30 December - Milt Tarver dies.
Template:Eventbrowser