StarTrek: The Original Series Crossovers
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James T Kirk The Next Generation by RobertCanary reviews
Spock, Sulu and Scotty have all reverted back to their ages during their time aboad the original USS Enterprise, during their five year mission / Meanwhile, Q visits Janeway who warns the God like entity that Picard is on the way to deal with him.
Crossover - StarTrek: The Next Generation & StarTrek: The Original Series - Rated: T - English - Sci-Fi/Adventure - Chapters: 58 - Words: 86,742 - Reviews: 4 - Favs: 5 - Follows: 9 - Updated: 12h - Published: 10/25/2017
The Past Meets The Future-Changing History by Bazzano03 reviews
After the premonition regarding Teal'C's son and his mentor, Daniel Jackson learns that the base and earth has been put on trial for past actions by the Q. Upon learning from a friend in the ancient's he can change his own past. The base decides to alter history and meeting the crew of the original Star Trek series. Giving the future a better shot at survival and redemption.
Crossover - StarTrek: The Original Series & Stargate: SG-1 - Rated: T - English - Sci-Fi/Friendship - Chapters: 44 - Words: 575,095 - Reviews: 3 - Favs: 7 - Follows: 5 - Updated: 1/13 - Published: 7/27/2017 - S. Carter, Gen. Hammond, D. Jackson, Jacob C.
The Enterprise and the Doctor by denise3 reviews
The Enterprise, during its five-year mission under Captain Kirk, repeatedly meets a mysterious individual known as the Doctor. Amid growing threats to the Federation, they must decide whether to trust him, or not. Episode II: Investigation: The Enterprise arrives on New Sapienza looking for the Doctor, but there they'll find more than they hoped for.
Crossover - StarTrek: The Original Series & Doctor Who - Rated: T - English - Suspense/Sci-Fi - Chapters: 19 - Words: 41,374 - Reviews: 17 - Favs: 35 - Follows: 51 - Updated: 12/30/2017 - Published: 10/8/2015 - J. Kirk, L. McCoy, Spock
Mirror Masquerade by jespah
A temporal interphase hits the Mirror Universe, and in 3111, Otra has a vision of a temporal, somatic and spatial switcheroo that overwhelms her.
Crossover - StarTrek: The Original Series & StarTrek: Enterprise - Rated: K - English - Drama/Sci-Fi - Chapters: 6 - Words: 7,847 - Follows: 1 - Updated: 12/26/2017 - Published: 12/8/2017 - H. Sulu, T. Mayweather, H. Sato - Complete
You open the old time novel by TFALokiwriter
You open the old time novel, where the heart is gone, and the hero would be me. Stardate 2389, McCoy's story is coming to a close. One Vulcan's early departure changes his mind.
Crossover - StarTrek: The Original Series & Star Trek: 2009 - Rated: K+ - English - Chapters: 1 - Words: 11,910 - Published: 12/7/2017 - [L. McCoy, Spock Prime] J. Kirk, L. McCoy/Bones - Complete
Where no Batman has gone before by Romantic Twist
Mr Freeze, Joker and Harry Mudd make trouble for both the Dynamic Duo and the Enterprise crew during Kirk's and company's time trips to 20th Century Gotham City.
Crossover - StarTrek: The Original Series & Batman - Rated: K - English - Adventure/Humor - Chapters: 8 - Words: 6,530 - Published: 11/3/2017
No Pain, No Gain by Hawki reviews
Oneshot: Gabriel Lorca and James T. Kirk were two very different captains, but they had at least one thing in common - they both needed their pain.
Crossover - StarTrek: The Original Series & Star Trek: Discovery - Rated: K+ - English - Sci-Fi - Chapters: 1 - Words: 1,237 - Reviews: 4 - Favs: 5 - Follows: 3 - Published: 10/21/2017 - J. Kirk, G. Lorca - Complete
When the Moon is Full by fireicewriter42
Spock had sometimes caught himself wondering - when he heard her voice, or saw her eyes widen in worry for someone she loved. Or when he saw the light of pain flicker across her face. It wasn't until many, many years later, however, that he no longer had to wonder what Vulcan looked like on a lazy evening when the moon was full.
Crossover - StarTrek: The Original Series & Star Trek: 2009 - Rated: K+ - English - Romance/Angst - Chapters: 1 - Words: 1,253 - Favs: 1 - Published: 10/17/2017
Infatuated Arrival, Demetrius of Romulus' Journal by Cotto
An incorrect comprehension of the truth is as damaging as any lie to the mental structure of the recipient, and does produce horrible renditions, even on the parts of the most adherent believer… true belief is therefore utterly pointless, what is needed is absolute understanding. In short, if you believe it's a pointless statement, what's needed is knowing what to believe! OC/SI.
Crossover - Buffy: The Vampire Slayer & StarTrek: The Original Series - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 1 - Words: 4,015 - Favs: 2 - Follows: 2 - Published: 10/12/2017 - [OC, Kendra] Buffy S., Faith L.
When Fictional Universes Collide by TKcloud9 reviews
Allie Barton, a young mutant from the Avengers universe, gets transferred to the Star Trek universe by the Scarlet Witch's powers, and must first convince herself that this is not a Skrull illusion, while Kirk and co. must convince themselves that yes, she really is the daughter of Hawkeye and Black Widow. Read Puppy Love (Avengers) first, to understand. One-shot crossover.
Crossover - StarTrek: The Original Series & Avengers - Rated: K - English - Friendship/Adventure - Chapters: 1 - Words: 7,059 - Reviews: 2 - Favs: 14 - Follows: 1 - Published: 9/11/2017
Academia by Lightscales15 reviews
Sus compañeros de cuarto no se parecían en nada en absoluto a él... Tal vez funcionaria. Básicamente, lo que sucedería si James Kirk, Leonard McCoy y Spock fueran compañeros de cuarto en la Academia Estelar. AU, contiene elementos de ambos universos.
Crossover - StarTrek: The Original Series & Star Trek: 2009 - Rated: K+ - Spanish - Friendship - Chapters: 6 - Words: 8,469 - Reviews: 9 - Favs: 1 - Follows: 3 - Updated: 8/25/2017 - Published: 7/12/2016 - J. Kirk, L. McCoy, Spock
Doctor Talk by Bryan Dacote reviews
Admiral Leonard McCoy has led a long life, and is now inspecting the new Enterprise 1701-D. Data introduces the Old Doctor to the Holodeck where McCoy decides to have a friendly chat with an ordinary Doctor from the 1950's in the heat of the Korean War, while having some drinks.
Crossover - StarTrek: The Original Series & M*A*S*H - Rated: K+ - English - Friendship/Hurt/Comfort - Chapters: 1 - Words: 2,467 - Reviews: 1 - Favs: 1 - Published: 8/9/2017
Enterprise the Star Ship, Warping Along by ButIHaveNoFear reviews
In the first crossover of its kind, a landing party from the USS Enterprise loses contact while visiting a strange planet with animate locomotives, and even stranger things happen aboard the ship. Captain Kirk and his crew must return to the Enterprise and regain control with logic and a little bit of magic.
Crossover - StarTrek: The Original Series & Thomas the Tank Engine - Rated: K - English - Sci-Fi/Humor - Chapters: 7 - Words: 14,417 - Reviews: 10 - Favs: 1 - Follows: 5 - Updated: 7/29/2017 - Published: 10/18/2016 - J. Kirk, L. McCoy, Spock, Thomas
Trouble Makers 2 by Ponchygirl
Part two to Trouble Makers. Co-authored with AllTrekkedUp
Crossover - CHIPs & StarTrek: The Original Series - Rated: T - English - Chapters: 4 - Words: 14,691 - Updated: 7/28/2017 - Published: 7/23/2017 - J. Kirk
Tribble Trouble by SciFiFanForever reviews
The Tenth Doctor and Rose Tyler are banished from the British Isles and end up on a planet in a disputed territory of space in the 23rd century. The USS Enterprise receives a priority one distress call from Sherman's Planet. What could possibly have gone wrong?
Crossover - StarTrek: The Original Series & Doctor Who - Rated: K - English - Sci-Fi/Humor - Chapters: 9 - Words: 25,535 - Reviews: 5 - Favs: 7 - Follows: 6 - Updated: 7/25/2017 - Published: 7/18/2017 - J. Kirk, Spock, 10th Doctor, Rose T. - Complete
Undiscovered Feelings by Seraphina Luna-Lilly Snape
The story of a young half Vulcan princess and her best friend who just so happens to be an android. The two embark on a journey to safe the princess's home world from a war ravaging her planet.
Crossover - StarTrek: The Next Generation & StarTrek: The Original Series - Rated: T - English - Romance/Angst - Chapters: 3 - Words: 3,258 - Updated: 7/11/2017 - Published: 12/4/2016 - [Data, OC] [Spock, OC]
The Ghost's Fascinating Enterprise by Hakluyt reviews
The Ghost, in battle with the Empire's Mining Guild, are flung through a tear in space to a place where the Guild is using slave labour to mine a powerful new element. Their only hope is to join forces with the crew of the starship Enterprise, to save innocent lives and get back home.
Crossover - StarTrek: The Original Series & Star Wars Rebels - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 9 - Words: 8,989 - Reviews: 2 - Favs: 3 - Follows: 3 - Published: 7/1/2017 - Spock, Uhura, Kanan J., Hera S.
Just The Same by Ellis Jenkins
(Sequel to "Similarities") During Spock Prime's last visit to the Enterprise, he reflects on his long, generally happy, intimate relationship with his Leonard McCoy, whilst watching their counterparts interact. (Warning: Major character death, but in Canon with Star Trek Beyond) Slight spoilers for Star Trek Beyond.
Crossover - StarTrek: The Original Series & Star Trek: 2009 - Rated: K+ - English - Romance - Chapters: 1 - Words: 468 - Favs: 5 - Published: 6/16/2017 - [Spock Prime, L. McCoy] [Spock, L. McCoy/Bones] - Complete
The War on the Edge of Forever by Danzinora Switch reviews
When Dr. McCoy, overdosed on cordrazine, vanishes through the Guardian of Forever, he winds up in 1940's Germany. Kirk and Spock chase after him and quickly find themselves prisoners in Stalag 13, which holds more secrets than expected. Story idea by LittleMissSpitfire; many thanks to her and CollieandShire for letting me write this!
Crossover - StarTrek: The Original Series & Hogan's Heroes - Rated: T - English - Adventure/Drama - Chapters: 9 - Words: 23,822 - Reviews: 65 - Favs: 17 - Follows: 25 - Updated: 6/2/2017 - Published: 9/30/2016 - J. Kirk, L. McCoy, Spock, R. Hogan - Complete
settling disputes by getitwrite12 reviews
Chekov and Scotty ask Jamie which is better, scotch or vodka.
Crossover - StarTrek: The Original Series & Doctor Who - Rated: K - English - Humor - Chapters: 1 - Words: 338 - Reviews: 2 - Follows: 1 - Published: 6/2/2017 - P. Chekov, M. Scott, Jamie M., Zoe H. - Complete
The Undiscovered Timeline by KevK1314 reviews
TOS on TOS action, as the First Doctor arrives on the Enterprise
Crossover - StarTrek: The Original Series & Doctor Who - Rated: K - English - Sci-Fi/Humor - Chapters: 1 - Words: 2,600 - Reviews: 2 - Favs: 1 - Follows: 1 - Published: 5/22/2017 - Complete
Star Trek with ponies by bauers374
First story please don't hate, for a picture of Doodle doo go to my youtube channel at Nightspawn-son-of-luna
Crossover - My Little Pony & StarTrek: The Original Series - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 2 - Words: 382 - Updated: 5/19/2017 - Published: 5/13/2017 - OC, Twilight Sparkle
X - Spock, Codename: Oracle by Defender of the Dogma
Young Spock is forced to flee from Vulcan to a strange universe: Marvel. Meeting with X - Men and Power Pack, becoming a superhero... it may not be the Vulcan way... but is it Spock's? No slash, no blood, no anything gross.
Crossover - StarTrek: The Original Series & X-Men - Rated: K - English - Adventure/Family - Chapters: 8 - Words: 7,565 - Favs: 2 - Follows: 4 - Updated: 5/17/2017 - Published: 3/3/2017 - Spock, Charles X./Professor X
RWBY meets the Enterprise crew by JohnCena1986
This is one of first RWBY and Star Trek Crossover. The Enterprise arrived in the RWBY universe though a Black Hole which send them to the planet Remnant where the away team bumped into team RWBY which RWBY mistaken the landing party for Members of the White Fang which Kirk ordered be transported to the Enterprise how every each member was holding Kirk, Spock and McCoy...
Crossover - RWBY & StarTrek: The Original Series - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 1 - Words: 2,962 - Favs: 3 - Follows: 3 - Published: 5/14/2017 - Team RWBY, J. Kirk, L. McCoy, Spock
The Garden of Hogwarts by Jetainia reviews
Sybok is pursuing god to the centre of the universe except there is something very different that lives there. It is no god, simply an old soul living his life with the only home he had ever known. The Final Frontier AU, Oneshot
Crossover - StarTrek: The Original Series & Harry Potter - Rated: K - English - Humor/Family - Chapters: 1 - Words: 5,539 - Reviews: 8 - Favs: 93 - Follows: 38 - Published: 5/3/2017 - J. Kirk, L. McCoy, Spock, Harry P. - Complete
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