Buffy: The Vampire Slayer and Stargate: SG-1
Crossovers
662
I Still Say it Looks like a Nail » by dogbertcarroll
Xander takes a little time off to let his wounds heal after the Olaf incident. His mother's estranged brother's place should be quiet enough to give him the time to heal, after all how exciting could working in deep space telemetry be?T, English, Humor & Sci-Fi, chapters: 12, words: 30k+, favs: 2k+, follows: 2k+, updated: 3/1 published: 5/20/2010, Xander H.
56 Aim High: A Stargate Tale » by lateVMlover
Buffy is the daughter of Jack and Joyce O'Neill when his son Charlie dies. This is a total reworking of BTVS season 1 as Buffy O'Neill is not exactly the same person Hank Summers would've raised. How does Sunnydale handle not having her there?T, English, Family & Hurt/Comfort, chapters: 11, words: 40k+, favs: 67, follows: 98, updated: 2/20 published: 9/8/2024
18
Sisters, the adventures of Samantha and Buffy Carter » by FPBarbieri
Samantha Carter, prodigy. Buffy Carter Summers, loving little sister. The story of their lives, together and apart.T, English, Drama & Family, chapters: 35, words: 108k+, favs: 33, follows: 46, updated: 1/31 published: 6/1/2021, S. Carter
1k+ An Extraordinary Journey » by fmfan1980
Willow from Sunnydale arrives at the SGC under extraordinary circumstances and goes on amazing adventures with the gang from the SGC. BSG:2003 also included in later chapters. (11-Mar-2025: Updated Chapters 1 to 9)T, English, Sci-Fi & Drama, chapters: 229, words: 1557k+, favs: 558, follows: 629, updated: 12/31/2024 published: 1/26/2014, [Faith L., Willow R.] S. Carter, J. O'Neill
4 Ship of the Line: Girl in the Middle by Jacob M. Bosch
When the children assimilated by the Borg on Halloween are put in danger, Willow does whatever it takes to protect them.T, English, Adventure & Sci-Fi, words: 5k+, favs: 14, follows: 25, 12/22/2024, Angel, Buffy S., R. Giles, Willow R.
4 Worlds Apart by Old Toad
After the end of their respective fifth seasons, Buffy Summers and Daniel Jackson meet.K+, English, Sci-Fi & Fantasy, words: 953, favs: 5, follows: 3, 10/5/2024, Buffy S., D. Jackson
4 AEJ Spotlights » by fmfan1980
A series of shorts involving characters from AEJ.K+, English, Drama, chapters: 2, words: 4k+, favs: 5, follows: 6, updated: 9/30/2024 published: 9/28/2024, [Willow R., Faith L.]
8 Doorways » by Mirrored Illusions
The Slayer and half of SG-1 both intended to go somewhere specific that was most definitely not the ice cave they ended up in. (AFAD 2024)T, English, chapters: 8, words: 6k+, favs: 29, follows: 38, updated: 8/31/2024 published: 8/1/2024, Buffy S., D. Jackson
59 Stargate: Through the Looking Glass » by Brenna's Urbangirl Projects
As Buffy jumped to close the Portal in "The Gift" Dawn was hit by a tendril of energy from the portal sending her into a new reality. Buffy is sent to continue to protect Dawn in the new universe and they are placed in the care of a certain member of SG-1 as her daughters with everyone's memories being modified to believe Buffy and Dawn had always been there.T, English, Sci-Fi, chapters: 42, words: 277k+, favs: 219, follows: 275, updated: 8/12/2024 published: 12/6/2012, Buffy S., Dawn S., S. Carter
6 Wonderland 3: Pool of Tears » by Brenna's Urbangirl Projects
With the destruction of the Death Star. Dawn and Buffy have returned to Earth. A month after the United Nations vote to join the New Republic. Jedi Master Dawn (Summers) Skywalker and Padawan Faith (Lehane) Skywalker arrive at the SGC and the war with the Goa'uld will never be the same.T, English, Sci-Fi & Adventure, chapters: 3, words: 25k+, favs: 35, follows: 54, updated: 7/8/2024 published: 5/15/2016, [Dawn S., Faith L.]
26 The Meaning of Strength » by wlfgang213
In an attempt to change the future, Xander is influenced to wear a different costume on Halloween, leading him to use his head instead of his fists in his war against the darkness. YAHF. DCAU Costumes, Stargate SG1 Crossover, and a surprise crossover.T, English, Supernatural & Adventure, chapters: 2, words: 7k+, favs: 208, follows: 309, updated: 1/15/2024 published: 6/18/2020
46 Stargate: Valkyrie (Revision 5) » by Brenna's Urbangirl Projects
Summary: On that fateful Halloween night. Buffy, Xander, Willow, Dawn, Cordelia, Giles, Jenny Calendar and Tara Maclay would be given a new destiny. Along with that destiny they would be given a 3 space going vessels in which to help fight the Goa'uld.T, English, Supernatural & Sci-Fi, chapters: 19, words: 69k+, favs: 206, follows: 281, updated: 12/22/2023 published: 12/8/2021, Xander H., Buffy S., Dawn S., Willow R.
342 A Legacy of Chaos: A Ship of Line Story » by andrewjameswilliams
In the aftermath of Ethan Rayne's spell Xander Harris finds himself transformed into a capsuleer and finds himself drawn into the battle between Stargate Command and the Goa'uld Empire. *Chapter one edited.*T, English, Sci-Fi & Adventure, chapters: 16, words: 92k+, favs: 979, follows: 1k+, updated: 11/20/2023 published: 3/20/2020
4 Children Of The Future » by Jennifer Schumacher
A series of vignettes involving the antics of the children of the Protectors au.T, English, Humor, chapters: 4, words: 3k+, favs: 14, follows: 10, updated: 9/5/2023 published: 9/4/2023, Xander H., Cordelia C., OC
4 An Avalanche of Echoes » by Mirrored Illusions
An alternate Buffy Summers, who is host to an alternate alternate Egeria, travels to Sunnydale to meet an alternate alternate alternate Buffy Summers. (AFAD 2023)T, English, Sci-Fi, chapters: 7, words: 11k+, favs: 14, follows: 24, updated: 8/28/2023 published: 8/2/2023, Buffy S., Egeria
6 Twice the Trouble » by Jennifer Schumacher
Jesse Harris-Chase from the Brave au touches a mirror in the Magic Box. It turns out, it's a Quantum Mirror. Now he's in the Protectors au. Add scheming NID agents and Abigail. Pity the idiots who think any child of Xander Harris and Cordelia Chase is an easy mark.T, English, Adventure & Family, chapters: 8, words: 7k+, favs: 34, follows: 16, updated: 8/24/2023 published: 8/22/2023, Xander H., Cordelia C., OC, J. O'Neill
Gateways of Redemption » by miko-demoness
In a thrilling crossover between Stargate SG-1 and Buffy the Vampire Slayer, a team of warriors unites to combat the sinister alliances of vampires across dimensions. They face battles, uncover ancient secrets, and confront a truth that threatens the multiverse. Through unity and unwavering determination, they fight for redemption and the triumph of light over darkness.K, English, chapters: 10, words: 5k+, favs: 3, follows: 3, 7/3/2023
363 Into the Void: SG-1 » by Brenna's Urbangirl Projects
On that fateful Halloween night. Buffy, Xander, Willow and Joyce would be given a new destiny. Along with that destiny they would be given a starship and a space station in which to help fight the Goa'uld.T, English, Sci-Fi, chapters: 61, words: 405k+, favs: 866, follows: 1k+, updated: 5/2/2023 published: 5/15/2014, [Buffy S., Willow R.] Xander H., Joyce S.
4 End of a Journey by fmfan1980
This is an AU of AEJ's chapter 126. In the original story, Faith waits for Tara to find a way to retrieve Willow from an alternate reality. What would happen if she didn't wait? What if the Powers that Be brought Willow back?K+, English, Drama, words: 2k+, favs: 9, follows: 8, 11/8/2022
2 A Cascade of Echoes » by Mirrored Illusions
In which Buffy shouldn't be the one explaining things.T, English, chapters: 9, words: 11k+, favs: 34, follows: 43, updated: 8/30/2022 published: 8/6/2022, Buffy S., D. Jackson, J. O'Neill
10 Redirected » by Mirrored Illusions
In which there's an ugly demon, a purple portal, Buffy, and a frowny-faced SG-1.T, English, chapters: 11, words: 12k+, favs: 58, follows: 89, updated: 8/29/2022 published: 8/2/2022, Buffy S., D. Jackson, J. O'Neill
186 Fighting with Family » by lateVMlover
This story takes place in February of Season 2 of BTVS. Instead of Angelus killing Jenny, he kills Buffy's mother Joyce, so she calls her uncle, Colonel Jack O'Neill, who learns who his niece is and what has been happening on Earth. Eventually, Faith joins the story with an original character for her Watcher.K, English, Family & Hurt/Comfort, chapters: 20, words: 80k+, favs: 241, follows: 287, updated: 1/2/2022 published: 8/28/2020, Buffy S., R. Giles, D. Jackson, J. O'Neill
87 To Our Own: Apocryphal » by Jacob M. Bosch
A Ship of the Line Story. In this sequel to To Our Own, freed from their enslavement by the magically created Borg, the New Collective takes steps to ensure their survival. With Xander Harris as its de facto leader, the New Collective face their first major threat when Apophis and his son come to destroy Earth and all of humanity.T, English, Sci-Fi, chapters: 12, words: 39k+, favs: 298, follows: 347, updated: 12/28/2021 published: 3/1/2021, Xander H., Willow R., D. Jackson, J. O'Neill
2 A Symphony of Echoes » by Mirrored Illusions
In which Cameron Mitchell is in the wrong timeline and Buffy is just trying to help.T, English, Friendship, chapters: 9, words: 10k+, favs: 20, follows: 32, updated: 8/31/2021 published: 8/10/2021, Buffy S., C. Mitchell, Egeria
2 Father Mountain, Mother Star by LycoX
Xander discovers his parents aren't who he thought they were.T, English, Family & Angst, words: 860, favs: 28, follows: 32, 8/4/2021, Xander H., Cordelia C., J. O'Neill