- Teska
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- Test Z-12
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- Tesum
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- Teuthian
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- Tfenpthi'su
- Tgomirekain
- Th'Fairoh
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- Th'Shelas
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- Thadiun Okona
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- Thagard
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- Thalassa (disambiguation)
- Thalassa system
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- Thanksgiving
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- That Hope Is You, Part 1
- That Hope Is You, Part 2
- That Sleep of Death
- That Which Divides
- That Which Survives
- Thatcher
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- Thaylor Expedition
- The 2018 Risa Lohlunat Festival!
- The 2019 Risian Lohlunat Festival!
- The 34th Rule
- The 37's
- The 62nd Rule
- The Abandoned
- The Abandoned (comic)
- The Abandoned (episode)
- The Abode of Life
- The Absolution
- The Admiral's Lounge
- The Adventure Game
- The Adventures of Captain Proton
- The Adventures of Captain Proton, Chapter Two: Death of the Patrol
- The Adventures of Flotter
- The Adventures of Lin Marna and the Grint Hound Challenge
- The Adventures of Lin Marna and the Mystery of Singularity Sam
- The Adversary
- The Aenar
- The Ageless One
- The Aging World
- The Alamo
- The Alcázar
- The Aliens Are Coming!
- The All
- The Allied Cooperative Starship Development Board
- The Alone
- The Alone, Part Two
- The Alpha and Beta Quadrant - Volume 2
- The Alternate
- The Alternative Factor
- The Amazing Stories
- The Ambergris Element
- The Ancestor
- The Andorian Incident
- The Andorians: Among the Clans
- The Animal People
- The Animated Series Supplemental Guide
- The Antares Maelstrom
- The Apocalypse Scenario!
- The Apple
- The Argon Affair!
- The Armada
- The Armies of the Night
- The Arsenal of Freedom
- The Art of Peace
- The Art of Star Trek
- The Art of Star Trek Discovery
- The Art of Star Trek Online
- The Art of War
- The Art of the Comeback
- The Art of the Deal
- The Art of the Impossible
- The Artistry of Dan Curry
- The Ascent
- The Ashes of Eden
- The Ashes of Tomorrow
- The Assassination Game
- The Assassination of Ambassador Garak
- The Assignment
- The Atlai
- The Augments
- The Autobiography of Benjamin Sisko
- The Autobiography of James T. Kirk
- The Autobiography of Jean-Luc Picard
- The Autobiography of Kathryn Janeway
- The Autobiography of Mr. Spock
- The Avenger
- The Avengers
- The Azphari Enigma
- The Badgey Directive
- The Badlands
- The Badlands, Part I
- The Badlands, Part II
- The Badlands, Part III
- The Badlands, Part IV
- The Badlands (Mestiko)
- The Bajoran and the Beast
- The Ballad of CloudShape to-Ennien
- The Ballads of Durall
- The Barrens
- The Barrier
- The Barrier of Essai
- The Battle
- The Battle Within
- The Battle Within (collection)
- The Battle at San-Tarah
- The Battle for Deep Space Nine
- The Battle of Betazed
- The Battle of Caleb IV
- The Battle of Gal-Mok
- The Battle of Klach D'Kel Bracht
- The Battlefield
- The Bayool Stomp
- The Beast
- The Beatles
- The Beginning
- The Beginning of the End...
- The Begotten
- The Belly of the Beast
- The Belly of the Beast (comic)
- The Best Defense
- The Best Defense...
- The Best Is Yet to Come
- The Best and the Brightest
- The Best of Both Worlds
- The Best of Star Trek
- The Best of Star Trek: The Next Generation
- The Better Man
- The Big Game
- The Big Good-Bye
- The Big Goodbye
- The Birds of Prey
- The Black Cat
- The Black Flag
- The Black Hole
- The Black Orchid
- The Black Shore
- The Blaze of Glory
- The Blimp
- The Blood-Dimmed Tide
- The Body Electric
- The Bonding
- The Boomer Diaries
- The Borg
- The Borg and Delta Quadrant
- The Bottle
- The Bottom Line
- The Bounty
- The Boy
- The Boy Who Cried Wolf
- The Brain-Damaged Planet
- The Brain Shockers
- The Brave and the Bold
- The Breach
- The Bride of Chaotica
- The Brightest Star