Stargate: Atlantis Crossovers
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Gateway Public Library by Tanista2
Every great institution has a humble beginning. Two devoted bookworms with their teammates and friends take on the important task of establishing the first library on New Earth. Guest starring ami ven's SG-22. (Ad Astra 'verse, also crossover with MacGyver 1985)
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: K+ - English - Friendship - Chapters: 1 - Words: 5,487 - Favs: 1 - Published: 7/23 - J. O'Neill, OC, Rodney M., Radek Z. - Complete
Stargate Command - The Aftermath by Ryan89 reviews
This is my take on what happens after, a more practical view on the use of technologies. The Ori have been defeated, Atlantis has remained on Earth for the past 9 months as teams of scientists scour the database in search of new and improved technologies. Old enemies resurface with vengeance on their mind. Atlantis will be returning to the Pegasus Galaxy to annihilate the Wraith.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: K - English - Sci-Fi/Adventure - Chapters: 11 - Words: 24,693 - Reviews: 21 - Favs: 17 - Follows: 23 - Updated: 7/3 - Published: 6/7 - S. Carter, D. Jackson, J. O'Neill, Gen. Landry
Dismantling Destiny III: Rewritten Fates by ImaliFegen reviews
The rewrite of SG-1 S09 episodes, Babylon, The Fourth Horseman Part I & II and Collateral Damage. (Full summary inside.)
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: M - English - Adventure/Romance - Chapters: 19 - Words: 67,635 - Reviews: 18 - Favs: 3 - Follows: 4 - Updated: 7/1 - Published: 5/2 - Complete
I'll Choose My Own Path by raspberry dreams reviews
Vernon and Petunia refuse to keep Harry, abandoning him with distant relatives. John embraces the idea of becoming a father to his abandoned cousin and takes him away to keep him safe. Is magic and Hogwarts going to be enough of an attraction to a boy who grew up on a seemingly almost sentient flying city in another galaxy.
Crossover - Harry Potter & Stargate: Atlantis - Rated: T - English - Family - Chapters: 36 - Words: 187,897 - Reviews: 453 - Favs: 738 - Follows: 731 - Updated: 6/30 - Published: 6/2 - [John S., Rodney M.] Harry P., Albus D. - Complete
Dismanteling Destiny II: Reminiscence - The Old, New & Unexpected by ImaliFegen reviews
The Episode rewrite of Ties That Bind, The Powers That Be, Beachhead and Ex Dues Machina. (Full summary for the fic inside.)
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure/Romance - Chapters: 16 - Words: 64,897 - Reviews: 15 - Favs: 3 - Follows: 4 - Updated: 4/14 - Published: 3/6 - Complete
Dismantling Destiny I: Ends, Transitions & New Beginnings by ImaliFegen reviews
This is a time travel fix-it for SGA S5E19 -'Vegas' crossed over with Stargate SG1 S9 & S10. (See full summary inside.)
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure/Romance - Chapters: 20 - Words: 61,550 - Reviews: 20 - Favs: 11 - Follows: 12 - Updated: 2/25 - Published: 1/27 - C. Mitchell, John S. - Complete
Inter Astra by Zathara001 reviews
AU. Sequel to AD ASTRA PER MAGICAE. Part of Evil Author Day 2023. John and Harry make a discovery that changes the course of the Atlantis mission.
Crossover - Harry Potter & Stargate: Atlantis - Rated: K+ - English - Chapters: 1 - Words: 3,844 - Reviews: 26 - Favs: 146 - Follows: 158 - Published: 2/14 - Harry P., Hermione G., John S. - Complete
Reassignment and Other Really Wild Things (Expert Testimony 7ish) by Evil Asch reviews
Spin Off from the Expert Testimony series. Rodney has an idea, Sheppard has an objection, Carter has a headache, Jack has a fit and someone has an adventure.
Crossover - Highlander & Stargate: Atlantis - Rated: T - English - Angst/Adventure - Chapters: 39 - Words: 32,739 - Reviews: 1 - Favs: 5 - Follows: 21 - Updated: 2/13 - Published: 11/30/2013
Videum Anqietas (Odkaz Antiků) by Tom Nov reviews
Toto jsou události co se staly potom co Atlantis přistála na Zemi. Začátek tohoto příběhu se odehrává v budoucnosti, ale později se přesuneme do minulosti a nové alternativní reality. Ve které se bude odehrávat zbytek příběhu a podíváme se i do Multivesmíru. Zároveň se zde objeví žijící Antikové a jedna prastará civilizace.
Crossover - Stargate: Atlantis & Avengers - Rated: T - Czech - Sci-Fi - Chapters: 18 - Words: 93,041 - Reviews: 1 - Favs: 3 - Follows: 2 - Updated: 1/29 - Published: 8/29/2022 - Hermiod, Thor, Nick F., Agent Maria Hill
The Goa'uld of Beacon: New Pegasus Foothold by qelah22 reviews
Ni'khyria is a Goa'uld actress who was born to be a star. When Colonel Jennifer Hailey requests her presence in Atlantis help deal with possible infiltration by Goa'uld bent on becoming a new generation of System Lords, Ni'khyria finds herself meeting amazing people and learning to take on roles she only thought she would ever play onstage. Can a Goa'uld find a home in Atlantis?
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure/Romance - Chapters: 11 - Words: 34,476 - Reviews: 5 - Favs: 5 - Follows: 5 - Updated: 1/16 - Published: 8/17/2022 - OC, Rodney M., Teyla E., Ronon D. - Complete
Rodney's freakout by Bl4ckHunter reviews
One-shot story. Crack fic. Rodney plans to invite Jennifer to dinner, but a supply visit from Serenity brings him a freakout due to its mechanic.
Crossover - Firefly & Stargate: Atlantis - Rated: T - English - Humor - Chapters: 1 - Words: 2,482 - Reviews: 4 - Favs: 2 - Follows: 1 - Published: 1/5 - [Rodney M., Jennifer K.] Mal, Inara - Complete
first encounter by deanwstories reviews
In a desperate attempt to keep from hurting anyone else, Dean goes through with Death's plan to be sent far, far away. He thinks he'll be sitting somewhere alone, cursed for an eternity with the darkness but Dean couldn't be more wrong. (end of s10 for SPN and s1 of SGA)
Crossover - Stargate: Atlantis & Supernatural - Rated: T - English - Adventure/Fantasy - Chapters: 1 - Words: 1,640 - Reviews: 5 - Favs: 7 - Follows: 16 - Published: 12/11/2022
Of Gates and Huntsmen by LordDeadwing reviews
Earth is not the only world the Lanteans fled to following the Wraith victory in the war. Drake Rose, son of Summer Rose, and Qrow Branwen finds himself on Earth while trying to survive a Grimm attack, a decade later he joins the Atlantis Expedition as they begin an adventure that will change everything forever.
Crossover - Stargate: Atlantis & RWBY - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 10,710 - Reviews: 4 - Favs: 12 - Follows: 11 - Updated: 12/4/2022 - Published: 11/30/2022 - Elizabeth W., Rodney M., OC
Harry Potter and the Seat of Avalon by LGreymark reviews
After the siege of Atlantis new recruits are brought by the Daedalus to Atlantis, among them a married British couple. Lt. Colonel John Sheppard isn't quite sure what to make of Lieutenant Harry and Dr. Hermione Potter, but their inclusion into the Expedition came from on high which can only mean bad things... Harry/Hermione main pairing. MANY secondary pairings.
Crossover - Harry Potter & Stargate: Atlantis - Rated: M - English - Sci-Fi/Adventure - Chapters: 3 - Words: 34,907 - Reviews: 82 - Favs: 575 - Follows: 854 - Updated: 12/3/2022 - Published: 10/17/2019
Said the Spider to the Fly by San Antonio Rose reviews
When the Machine gives its team the number of John Reese's old friend John Sheppard, neither man is prepared for the tangled web of hidden agendas and hidden identities they're about to uncover. The Trust has brought a Wraith to New York to sell to Elias. But not even they have as much control of the situation as they think.
Crossover - Stargate: Atlantis & Person of Interest - Rated: T - English - Adventure/Friendship - Chapters: 5 - Words: 24,555 - Reviews: 3 - Favs: 15 - Follows: 6 - Updated: 11/27/2022 - Published: 11/23/2022 - John S., Radek Z., J. Reese, H. Finch - Complete
A Way Home, Daedalus by TimeTraveller-1900 reviews
AU Seven of Nine comes up with a time travel drive that could fold time together, getting Voyager back home. But during the experiments, a rift is opened and a ship from a parallel universe arrives. The Daedalus is here. Nothing will be the same again.
Crossover - StarTrek: Voyager & Stargate: Atlantis - Rated: K - English - Sci-Fi - Chapters: 1 - Words: 7,983 - Reviews: 8 - Favs: 40 - Follows: 28 - Published: 11/18/2022 - K. Janeway, Seven of Nine, B. Torres - Complete
Battle of the three galaxies Apocalypse by c.jamous
the third installment of the series of movie , Apocalypse is a rich in events movie , will have many short chapters, hope you enjoy it . i advise you listen to the below music while reading it will help a lot " youtu . be /h3OpppJvbSs" remove the spaces to work
Crossover - Stargate: Atlantis & Avengers - Rated: K - English - Adventure/Sci-Fi - Chapters: 18 - Words: 15,366 - Favs: 1 - Follows: 2 - Updated: 11/1/2022 - Published: 3/10/2020 - Elizabeth W., David S./Sheppard, Dr. Strange/Stephen S., Carol Danvers/Captain Marvel
Stargate: Archangel, Pilot Episode by RogueTrace reviews
Jessica Martin encounters a Repository of the Ancients in the Colorado mountains, and begins her journey. This is the beginning of "Option 1" of the 5 that I've considered writing.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 2,788 - Reviews: 4 - Favs: 18 - Follows: 27 - Published: 10/11/2022
Stargate Atlantis: The Robotech War - Re-Upload by StrikeFreedom11 reviews
Two universe, completely independent from one another, will collide. How will the Atlantis Expedition thrive with one of the greatest warships and some of the bravest and greatest soldiers from another Earth aiding them with their conflict with the Wraith and other threats? Who knows, but it is going to be an amazing ride regardless. Welcome, to Stargate Atlantis: The Robotech War.
Crossover - Robotech/Macross & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 27 - Words: 237,740 - Reviews: 29 - Favs: 112 - Follows: 110 - Published: 10/1/2022 - Lisa/Misa, Rick/Hikaru, Gloval, John S.
Stargate Atlantis: The Robotech War by Strikefreedom10 reviews
Two universe, completely independent from one another, will collide. How will the Atlantis Expedition thrive with one of the greatest warships and some of the bravest and greatest soldiers from another Earth aiding them with their conflict with the Wraith and other threats? Who knows, but it is going to be an amazing ride regardless. Welcome, to Stargate Atlantis: The Robotech War.
Crossover - Robotech/Macross & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 161 - Reviews: 300 - Favs: 180 - Follows: 215 - Updated: 9/30/2022 - Published: 10/4/2018 - Lisa/Misa, Rick/Hikaru, Gloval, John S.
The Pegasus Intervention by kaln7 reviews
With the Covenant war over the UNSC can finally begin exploring the universe, but there first step outside their galaxy could lead them to another enemy that would prefer to feed on them instead of destroying them, can one ship survive in a galaxy teaming with an overwhelming enemy or will they get help from a group of humans who are also exploring the universe themselves.
Crossover - Halo & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 136,471 - Reviews: 154 - Favs: 336 - Follows: 418 - Updated: 9/12/2022 - Published: 4/7/2017
Letters to Jack by FaerieMyst reviews
When a post-NCIS Tony DiNozzo is sent to Atlantis, unexpected changes are on the horizon.
Crossover - NCIS & Stargate: Atlantis - Rated: T - English - Chapters: 1 - Words: 10,774 - Reviews: 2 - Favs: 18 - Follows: 10 - Published: 9/10/2022 - Tony D., John S., Teyla E., R. Woolsey - Complete
Where I Belong by wereleopard reviews
Tony and Gibbs return to NCIS, but not alone. They have to deal with former teammates, former lovers, and aliens that are controlling people. Just another day for them. This is the sequel to 'Agent, really far, Afloat'.
Crossover - NCIS & Stargate: Atlantis - Rated: T - English - Romance/Drama - Chapters: 6 - Words: 11,583 - Reviews: 33 - Favs: 99 - Follows: 109 - Updated: 7/7/2022 - Published: 1/12/2021 - [Leroy Jethro Gibbs, Tony D.] [Rodney M., John S.] - Complete
Mechanical Warfare by CPB99 reviews
(Second installment the Jack/Ares series. ). Four years after Jack ends the war with the Goa’uld, a new threat rises from the ashes of a formidable foe. Only he can stop it and to do so, he must leave home for Atlantis.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure - Chapters: 37 - Words: 22,469 - Reviews: 19 - Favs: 12 - Follows: 16 - Updated: 7/3/2022 - Published: 12/13/2021 - J. O'Neill, S. Carter, John S., Teyla E. - Complete
Stargate Salvation by Uni40 reviews
Stargate Salvation is a Time Travel fix it in Stargate, this is on a massive scale. The Aschen have destroyed Earth now the last Tau’ri takes revenge. I have place SGU on an accelerated timeline so that SGU season 1 and SGA season 5 take place simultaneously. This includes All of the Stargate Tv and movies except for Origins.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: K - English - Sci-Fi - Chapters: 2 - Words: 4,668 - Reviews: 10 - Favs: 37 - Follows: 47 - Updated: 5/22/2022 - Published: 5/21/2022 - J. O'Neill, Thor, Elizabeth W., Teyla E.
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