|This article or subsection has an associated category.||2373|
|years:||2370 2371 2372 2373 2374 2375 2376
(stardates 50000.0 to 59999, or from 2373.0)
|decades:||2340s 2350s 2360s 2370s 2380s 2390s 2400s|
|centuries:||23rd century - 24th century - 25th century|
2373 was, on Earth's calendar, the 74th year of the 24th century, and the fourth year of the 2370s decade. Besides this time period's Human dates, in stardates this era begin with stardate 2373.0 in some systems of dating, and stardates 50000.0 to 59999 in others.
- Starfleet introduces a new uniform design that quickly replaces all uniforms in use heather-gray shoulders and department color indicated by the undershirt and the cuffs on the jacket, but the crew aboard the USS Voyager and the crew aboard the USS Equinox continued to use the previous uniform design, due to their ships being stranded in the Delta Quadrant.  
- After suffering heavy losses, Chancellor Gowron arrives at Deep Space 9 for medical assistance. To prepare for a Dominion invasion, Gowron reinstates the Khitomer Accords.
- The Thallonian Empire collapses. 
- Bajor assumes full control of Starbase Deep Space Nine on a temporary 60-day basis. Deep Space Nine is renamed Emissary's Sanctuary by the Bajoran government. 
- Starfleet infiltrates the initiation ceremony of the Order of the Bat'leth and exposes General Martok, Chancellor Gowron's chief of staff, as a Founder, helping to bring an end to the year-long unofficial Federation-Klingon War. 
- The Borg Collective launches another incursion of Federation space, leading to the Battle of Sector 001. 
- The Dominion War begins in late December with the mining of the Bajoran wormhole and the capture of starbase Deep Space 9 by Dominion forces. 
- Min Zife of Bolarus assumes the presidency of the United Federation of Planets. 
- President Zife covertly provides experimental nadion-pulse cannons to Tezwa, using the Orion Syndicate as a go-between.  
- Cardassian head of state Meya Rejal transfers power to Gul Skrain Dukat after the Klingon attacks on Cardassia, believing that a war-leader is now more appropriate to determine the fate of Cardassia.
- The Cardassian Union joins the Dominion. 
- USS Voyager, missing since 2371, is officially declared lost. 
- After learning from Ro Laren that the Dominion is trying to build an artificial wormhole to the Gamma Quadrant, Enterprise's captain Jean-Luc Picard, together with Geordi LaForge and Ro, go on a covert mission to sabotage the attempt. They are able to rescue Sam Lavelle who, being a war prisoner to the Dominion, was forced to mine the required Corzanium in the Eye of Talek - a black hole inside the Badlands.
- The Columbia (NX-02), missing for over 200 years, is discovered in the Gamma Quadrant by the crew of the USS Defiant 
Promotions and transfers
- Sara Nave graduates from Starfleet Academy at the age of 18, after being admitted on an accelerated curriculum. 
- Captain Mackenzie Calhoun assumes command of the USS Excalibur. He retains Commander Elizabeth Shelby as first officer; among the rest of his senior crew are: recently promoted Lieutenant Commander Burgoyne 172, promoted from assistant to chief engineer; Lieutenant Zak Kebron, chief of security/tactical officer; Lieutenant Soleta (from Starfleet Academy), chief science officer; Dr. Selar (from the USS Enterprise-E), chief medical officer; Lieutenant Robin Lefler (also from Enterprise), operations manager; and Lieutenant Mark McHenry, conn officer. 
- Fabian Stevens returns to his family's shuttle business. 
Births and deaths
References and notes
- TOS movie: Star Trek.
- ST reference: Star Trek Chronology.
- TNG movie: First Contact
- DS9 episode: "Rapture"
- VOY episode: "Message in a Bottle"
- NF novel: House of Cards
- DS9 novel: The Conquered
- DS9 episode: "Apocalypse Rising"
- TNG movie: Star Trek: First Contact
- DS9 episode: "Call to Arms"
- ST novel: Articles of the Federation
- TNG novel: A Time to Kill
- TNG novel: A Time to Heal
- DS9 novel: The Never-Ending Sacrifice
- DS9 episode: "By Inferno's Light"
- TNG - The Dominion War novel: Behind Enemy Lines
- ST - Destiny novel: Gods of Night
- TNG novel: Resistance
- NF novel: Into the Void
- SCE eBook: War Stories, Book 2
- VGR episode: "The Q and the Grey"
- ST website: StarTrek.com