The Twelfth Fleet was a numbered fleet in the United Federation of Planets Starfleet, active during at least the 23rd and 24th centuries.

In 2373, the Twelfth Fleet was sent to assist the Twentieth Fleet in containing the Klingons in the Archanis sector. (Star Trek: Swiftfire: "Chariots of Korvat")

In mid-2374, the Twelfth fought off a Dominion strike fleet heading for Starbase 310. (Star Trek: Swiftfire: "No Rest for the Wicked")

Ships of the Star Fleet (Chris Wallace) continuity

In 2377-78, the command base of the Twelfth was Starbase 343. (Ships of the Star Fleet, Vol. 4: Star Fleet Operating Forces. )

Star Trek: Hidden Frontier continuity

In the post-Dominion War period, the 12th was assigned to Sector 441. Its command base was Deep Space 12.

Fleet elements


The Twelfth Fleet was also the nickname for the Starfleet International chapters based in Region 12 — states of the American Midwest. (Starfleet International: Scott A. Akers, et al., Master Genealogy: Starfleet Region 12)


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