2004 (production)

January

 * 14 January – airs.
 * 17 January – Albert Henderson and Noble Willingham die.
 * 21 January – airs.
 * 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

 * 1 February – Pocket TNG novel A Time to Be Born by John Vornholt is published by Pocket Books.
 * 4 February – airs.
 * 11 February – airs.
 * 12 February – Harriet Leider dies.
 * 13 February – Jim Rugg dies.
 * 16 February – Bill Oakley dies.
 * 17 February – Samuel Matlovsky dies.
 * 18 February – airs.
 * 24 February –
 * Star Trek: Voyager: The Complete First Season is released on Region 1 DVD.
 * Pocket TNG novel A Time to Die by John Vornholt is published by Pocket Books.
 * 25 February – airs.

March

 * 3 March – airs; Cecily Adams dies.
 * 7 March – Paul Winfield dies.
 * 30 March – Pocket TNG novel A Time to Sow by Dayton Ward and Kevin Dilmore is published by Pocket Books.

April

 * 1 April – Ward Botsford dies.
 * 13 April – Shirley Maiewski dies.
 * 21 April – airs.
 * 27 April – Pocket TNG novel A Time to Harvest by Dayton Ward and Kevin Dilmore is published by Pocket Books.
 * 28 April – airs.

May

 * 5 May – airs.
 * 12 May – airs.
 * 13 May – Betty Matsushita dies.
 * 18 May – Star Trek: Voyager: The Complete Second Season is released on Region 1 DVD.
 * 19 May – airs.
 * 25 May – Pocket TNG novel A Time to Love by Robert Greenberger is published by Pocket Books.
 * 26 May – 's third season ends with the episode.

June

 * 4 June – Charles Correll dies.
 * 7 June – Don Trumbull dies.
 * 29 June – Pocket TNG novel A Time to Hate by Robert Greenberger is published by Pocket Books.

July

 * 6 July –
 * Jimmie F. Skaggs dies.
 * Star Trek: Voyager: The Complete Third Season is released on Region 1 DVD.
 * 17 July – Donna Barrett Gilbert dies.
 * 21 July – Jerry Goldsmith dies.
 * 27 July – Pocket TNG novel A Time to Kill by David Mack is published by Pocket Books.
 * 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.
 * 4 August – Ron Veto dies.
 * 28 August – Robert Lewin dies.
 * 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 and.
 * Pocket TNG novel A Time to Heal by David Mack is published by Pocket Books.

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

 * 5 October – Final draft script of is submitted.
 * 8 October – ENT Season 4 premieres with.
 * 15 October – airs.
 * 22 October – airs.
 * 25 October – Burt "Skip" Burnam dies.
 * 28 October – Charles F. Wheeler dies.
 * 29 October – airs.

November

 * 2 November – Star Trek: The Original Series: The Complete Second Season is released on Region 1 DVD.
 * 3 November – Dave Perna dies.
 * 5 November – airs.
 * 6 November – Elizabeth Rogers dies.
 * 9 November – Star Trek: Voyager: The Complete Fifth Season is released on Region 1 DVD.
 * 12 November – airs; Walter Irwin dies.
 * 16 November – Christopher T. Gerrity dies.
 * 19 November – airs.
 * 22 November – Claire Qute is born. Danny McCauley dies.
 * 26 November – airs.

December

 * 3 December – airs.
 * 7 December – Star Trek: Voyager: The Complete Sixth Season is released on Region 1 DVD.
 * 13 December – Ben Slack dies.
 * 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.
 * 24 December – John Blower dies.
 * 29 December – William Boyett dies.
 * 30 December – Milt Tarver dies.

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