Star Trek anniversaries
There have been several anniversary events in Star Treks history.

7th anniversary 
 
  debuts on NBC television seven years to the day after  debuted on the same network

10th anniversary 

 The Labor Day weekend convention at New York City's Statler Hilton Hotel was dubbed "Star Trek Bi-Centennial-10," celebrating both the nation's bicentennial and the tenth anniversary of the series debut. All the stars, with the exception of Leonard Nimoy, who was performing in "Equus" on Broadway, were in attendance. However, Leonard Nimoy DID briefly stop by to address the convention in the Grand Ballroom. Evidently someone sent him a nasty letter for not appearing at this major convention, accusing him of not caring about the fans, etc.  Leonard came to the convention to read the letter, substituting the word, “bleep”, for whatever expletives where aimed at him in the letter. 

  celebrates ten years 
 Star Trek: The Next Generation - 10th Anniversary Collector's Edition
 Star Trek: The Next Generation - The Continuing Mission

  celebrates ten years 
The Lives of Dax
Prophecy and Change
Rising Son
The Left Hand of Destiny, Book One
The Left Hand of Destiny, Book Two
 The novel  was slated for the 10th anniversary of , but was pushed back to a 2003 release
Star Trek Customizable Card Game releases its Energize set for DS9's 10th anniversary 
 CCG: Tenth Anniversary Collection

  celebrates ten years 
Distant Shores, a 10th anniversary of Voyager anthology

 The alternate reality  celebrate ten years
  Blu-ray and 4K Ultra HD Blu-ray

20th anniversary 

Note: The first franchise anniversary for which a special logo was introduced, mostly featured as stickers on merchandise released in that year. Star Trek did not gather steam as a full-fledged multi-media franchise until well after the release of  in 1979, which is why there were no previous anniversary events. Paramount had not taken any official interest in celebrating Star Trek previously; what events there were being predominantly fan driven.
 Release of , the original unaired Star Trek pilot episode, in the VHS, Betamax, and LaserDisc home video entertainment formats. This is the first time the complete episode was available to the general public. As a full color version was then unavailable, the video release is a combination of the color footage used in , and a black-and-white print of the pilot. 
  premieres
 Cinefantastique, issue 63, Vol 17 #2 – 20th anniversary retrospect
 Star Trek Star Fleet Technical Manual 2nd printing
  is green-lighted and taken into production; this was not a coincidence as then Paramount Television CEO Mel Harris deemed the anniversary as the perfect moment for the relaunch of the television franchise.

 Star Trek: The Motion Picture  celebrates twenty years
Star Trek: The Motion Picture - 20th Anniversary Collector's Edition  audio CDs

 Star Trek: The Next Generation celebrates twenty years
 TNG Complete Series Boxset

 Star Trek: The Next Generation celebrates twenty years in Japan
 Platz limited edition release of four The Next Generation related Star Trek model kits

25th anniversary 

 , TNG's 100th episode, airs
 AMT/Ertl Star Trek model kit (re-)releases with new box-art
 Cinefantastique, issue 86, Vol 22 #3 – 25th anniversary edition with two alternative covers
 Estes Industries reissues of their rocket propelled Star Trek model kits
 Impel Star Trek 25th Anniversary - Series I and Series II trading card sets
 Star Trek: 25th Anniversary (PC)
 Star Trek: 25th Anniversary (Game Boy)
 Star Trek: 25th Anniversary (NES)
 Star Trek 25th Anniversary Audio Collection
 Star Trek: 25th Anniversary LCD Video Game
 Star Trek 25th Anniversary Special
 Star Trek Commemorative Checker Set
 Star Trek Commemorative Chess Set
 Star Trek postal envelope, created by Keith Birdsong and limited to 25,000 copies
 Star Trek: The First 25 Years (cancelled)
 Star Trek: The Movies - 25th Anniversary Collectors Set
 The Producers Building on the former Desilu studio lot, attended by the entire cast of both The Original Series and The Next Generation, is ceremoniously renamed to the "Gene Roddenberry Building" (6 June)
  premieres; despite the film division of the studio experiencing financial adversity at the time, it was decided to produce a Star Trek film with the original crew for the anniversary after all. Such was the determination not to let the occasion go by unnoticed, that a cancellation decision well into the production for budgetary reasons by a lower echelon studio executive was overturned by conglomerate higher-ups a few weeks later. (see: The Undiscovered Country: Story and production)
 "Silver Anniversary" was the title of the first chapter of George Takei's autobiography, To the Stars.
 The Making of Star Trek reissues by Del Rey Books and Titan Books, the latter constituting the first and only edition of the book published outside the USA

Star Trek: The Next Generation celebrates twenty-five years
Star Trek: The Next Generation 25th Anniversary Event (23 and 26 July)
The Best of Star Trek: The Next Generation, Volumes 1 & 2
Star Trek: The Next Generation Calendar (2013) (August)
 
 Star Trek: Deep Space Nine celebrates twenty-five years

 celebrates twenty-five years
Star Trek: Voyager 25th Anniversary Special (February)
Star Trek: The USS Voyager NCC-74656 Illustrated Handbook (July)
Star Trek Voyager: A Celebration (November)

30th anniversary 

 
 , DS9's 100th episode, airs
 
 Actress Bibi Besch died one day before Star Treks 30th anniversary
 AMT/Ertl Star Trek model kit (re-)releases with new box-art and complementary cut-away prints of either the  or the , never again reissued afterwards
 Barbie & Ken Star Trek Giftset
 Cinefantastique, issue 118, Vol 27 #11 – 30th anniversary edition
 SciPubTech starship cut-away posters
 Star Fleet Technical Manual 3rd printing
 Star Trek 30th Anniversary Crossword Puzzles‎ ()
 Star Trek 30 Years
  (26 August, BBC2 UK)
 Star Trek: 30 Years and Beyond
 Star Trek: Federation Passport
 Star Trek: These Are the Voyages... pop-up book

 Star Trek: The Next Generation celebrates thirty years
Bif Bang Pow! The Next Generation-related merchandise releases

35th anniversary 

Note: First time use of the actual Original Series title font for an official franchise anniversary logo.
35 Jahre Star Trek VHS release
 debuts on UPN television
Star Trek - 35th Anniversary Rittenhouse Archives trading cards set
 (16 September, BBC2 UK)
TV Guide celebratory cover variants (20 April) & July Star Trek 35th Anniversary Tribute special edition

 Star Trek: The Motion Picture celebrates 35 years
Return to Tomorrow - The Filming of Star Trek: The Motion Picture

  celebrates thirty-five years
 Limited (to six hundred screens) theatrical release of  (10 and 13 September )

40th anniversary 

Note: Color variations of the official franchise anniversary logo are known.
40 Years of Star Trek (The Space Channel, Canada)
40 Years of Star Trek: The Collection (5-7 October, New York City)
 Art Asylum toys
 Creation Entertainment official 40th anniversary Star Trek convention (17-20 August, Las Vegas)
 The Crucible trilogy of TOS novels
Provenance of Shadows
The Fire and the Rose
The Star to Every Wandering
 The Mere Anarchy eBook miniseries
Things Fall Apart
The Centre Cannot Hold
Shadows of the Indignant
The Darkness Drops Again
The Blood-Dimmed Tide
Its Hour Come Round
 The re-release of several classic Star Trek novels, with new cover art
Strangers from the Sky
Vulcan's Glory

The Entropy Effect
Rihannsu: The Bloodwing Voyages
 Several new books were also released with special "40th Anniversary Special" signage on them
Burning Dreams
Vanguard: Summon the Thunder
Rihannsu: The Empty Chair
Constellations
 The re-release of the Star Trek Logs adaptations of TAS
Star Trek Logs One and Two
Star Trek Logs Three and Four
Star Trek Logs Five and Six
Star Trek Logs Seven and Eight
Star Trek Logs Nine and Ten
 Planet Xpo Star Trek: 40th Anniversary Gala Celebration and Conference (8 September)
 Ships of the Line
 Star Fleet Technical Manual 4th printing
 Star Trek - Celebrating 40 Years - Special Collection
 Star Trek: Legacy
 Remastered Star Trek: The Original Series returns to television
 Many TV events such as SciFi UK's week-long marathon of Star Trek films and episodes. This took place between Monday 4, and Friday 8 September. The best Star Trek episode was voted for by viewers at the end of the week.

 Star Trek: The Motion Picture celebrates 40 years
 Limited (to five hundred plus screens) theatrical USA-only release of Star Trek: The Motion Picture (15 and 18 September )
The First Star Trek Movie (October)
Star Trek: The Motion Picture - The Art and Visual Effects (September 2020, postponed)

External link

45th anniversary 

 Creation Entertainment official 45th anniversary Star Trek conventions
 11-13 March, San Francisco 
 15-17 July, Boston 
 11-14 August, Las Vegas 
Legacy – Star Trek 45th anniversary art exhibition (8-20 September, Manchester, UK)
Trek Nation

50th anniversary 

  premieres (22 July)
  (18 July, UK)
 50 Years of Star Trek (14 August, The History Channel)
 AMT, Polar Lights and Revell Germany Star Trek model kit (re-)releases with new box-art.
Bif Bang Pow! The Original Series-related merchandise releases
 Creation Entertainment official 50th anniversary Star Trek convention (31 July–4 August, Las Vegas, USA )
 The Fifty-Year Mission: The First 25 Years (28 June)
 The Fifty-Year Mission: The Next 25 Years (30 August)
 MAC Cosmetics release of a collection of Star Trek themed make-up (August).
 Star Trek: 50 Artists 50 Years (6 Septemeber)
 Star Trek: 50th Anniversary Cover Celebration (17 August)
 Star Trek: The Exhibition (8 July-4 November, Blackpool, UK)
 Star Trek: Legacies-trilogy release, featuring the main characters from  as well as Number One in a prominent role. (28 June – 30 August)
 Star Trek: The Original Series - The Roddenberry Vault (December)
 Star Trek: Ships of the Line (2017) (19 July)
 Star Trek: Ships of the Line Posters (22 September)
 , UK 50th anniversary Blu-ray reissue
 Star Trek: The Starfleet Academy Experience (13 May, Ottawa, Canada)
 Star Trek 50th Anniversary Official Calendar (15 August)
 Star Trek 50th Anniversary Risk (June)
 Star Trek 50th Anniversary stamp releases by various Commonwealth postal services, among others those of Antigua & Barbuda, Australia, Canada, Grenada, St Kitts and Nevis, as well as Tuvalu, though not by that of the UK itself. Non-Commonwealth countries who have concurrently done so included Liberia and the Marshall Islands.
 Star Trek 50th Anniversary Special (September, TV Guide)
  (6 September)
  (18 October, 4th edition)
 Star Trek Online released the game's third expansion, Agents of Yesterday. This expansion saw the addition of a playable faction based on the 23rd century-era Starfleet and had players ally themselves with Montgomery Scott, Pavel Chekov, and  in bringing a halt to the Temporal Cold War. This expansion added in a number of playable starships designed like they were in the TOS era and its first lockbox offered players a chance to own an alternate reality version of the .
 Trivial Pursuit: Star Trek 50th Anniversary Edition (May)
  Star Trek stamps (2 September)
 After a two-year restoration, the fully restored original eleven-foot USS Enterprise studio model was put back on permanent display in the  (NASM) on , as planned

55th anniversary 

 The Center Seat; 55 Years of Star Trek (The History Channel, 5 November)
  (7 September)
 Star Trek - The Original Series: A Celebration (21 September)
 Star Trek Official Calendar (2022) (7 October)

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