Harry Potter Crossovers
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Quadwizard Tournament by mikechen4395 reviews
New threats arose as Gaia has been defeated. Another great Prophecy is issued and sevens are destined to go to Britain to protect Harry and his friends. Set during GoF and after BoO. English is my second language. Rated T for possible scenes of blood and death. First Fanfic, please review.
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: T - English - Adventure/Friendship - Chapters: 7 - Words: 12,455 - Reviews: 3 - Favs: 8 - Follows: 16 - Updated: 11/2 - Published: 10/20 - Harry P., Ginny W., Annabeth C., Percy J.
The Mage and the Engineer by Christopher Perkins reviews
When the Goblet of Fire spat his name out as a Fourth champion in the Tri-Wizard Tournament, Harry Potter thought that his life couldn't get any more dangerous. Now he's dodging bullets and shells and fighting for a Duchy against an Imperial Invasion. Will he and those who came with him find their way back? Or will they find reasons to stay?
Crossover - Harry Potter & Valkyria Chronicles - Rated: T - English - Adventure/Romance - Chapters: 5 - Words: 9,322 - Reviews: 7 - Favs: 46 - Follows: 68 - Updated: 11/2 - Published: 8/31 - [Harry P., Isara G.] Hermione G., Welkin G.
The Philosopher's Stone by xmenfan33 reviews
Once, in a different life, a letter would have arrived inviting young Harry to Hogwarts. He then went to the school happily and without fear. In this life, when an owl landed next to him at the breakfast table with a letter labeled "Harry Potter" it took him a minute to remember that was what the wizards called him.
Crossover - Harry Potter & Fullmetal Alchemist - Rated: T - English - Chapters: 10 - Words: 21,808 - Reviews: 17 - Favs: 29 - Follows: 39 - Updated: 11/2 - Published: 10/2 - Harry P., Hermione G., Draco M., Edward E.
Torbellino klaus mikaelson y Aledis bythesea by lupispeke9 reviews
Después de la guerra y de haber derrotado a lord voldemort Es momento de tomarse un descanso del mundo mágico y sus responsabilidades. Un encuentro inesperado y un fallido intento de una vida tranquila y "normal" la llevan a conocer al Híbrido Original y terminar envuelta en una nueva aventura ESTA ES UNA HISTORIA OC X KLAUS MIKAELSON Esta historia es parcialmente conectada a otra
Crossover - Vampire Diaries & Harry Potter - Rated: K+ - Spanish - Romance/Adventure - Chapters: 1 - Words: 1,560 - Reviews: 1 - Favs: 1 - Follows: 2 - Published: 11/2 - Harry P., Klaus, OC
Queen Potter by DarkPhoenixLady reviews
Magic is a strange and wonderous thing, it allows people to change into animals of all shapes and sizes. It can protect, nurture, and destroy. It is also rare. Only a fraction of all the planets that give rise to sentient and sapient life have magic. The other thing that's strange, though far less wonderous is that alien abductions are real.
Crossover - Aliens/Predator & Harry Potter - Rated: T - English - Sci-Fi - Chapters: 29 - Words: 91,739 - Reviews: 42 - Favs: 318 - Follows: 414 - Updated: 11/2 - Published: 4/5 - Predator/Yautja, Harry P., Hermione G.
The Blue Wizard and the Prisoner of Azkaban by CSIalchemist reviews
Rin and Yukio Okumura are getting ready to return to Hogwarts for their third year when they hear that mass murderer Sirius Black escaped Azkaban prison. Everyone thinks he's after Harry Potter. While everyone at school is keeping their eyes peeled for the escaped convict, the Okumura twins can't help but feel like they heard Black's name from somewhere.
Crossover - Harry Potter & Blue Exorcist/青の祓魔師 - Rated: T - English - Fantasy/Mystery - Chapters: 8 - Words: 20,713 - Reviews: 57 - Favs: 26 - Follows: 27 - Updated: 11/2 - Published: 4/10
The Defensive Space Force Ship Requirement by tkepner reviews
Harry Potter, and the rest of Dumbledore's Army in his fifth year, use the Room of Requirement to get themselves a spaceship! The problems of a tiny island on Earth don't seem so important, anymore. Wizards in Space! What could possibly go wrong with that? Eventually, this will be a crossover with Stargate SG-1.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Fantasy/Sci-Fi - Chapters: 46 - Words: 284,754 - Reviews: 1978 - Favs: 2,290 - Follows: 3,032 - Updated: 11/2 - Published: 12/11/2021 - Gen. Hammond, Harry P., Hermione G., Lee J.
Even Royals Fear Death by Gambito reviews
Harry took the Draught of Living Death in an effort to follow his family and friends into death. He didn't expect to wake up in a completely different world where magical creatures were now known as Wesen and where people fight over the ownership of seven familiar keys that may or may not lead to a now empty vault that he once woke up in.
Crossover - Harry Potter & Grimm - Rated: M - English - Romance/Humor - Chapters: 11 - Words: 22,867 - Reviews: 30 - Favs: 144 - Follows: 201 - Updated: 11/2 - Published: 8/7 - [Harry P., Nick B., Captain Renard]
The Dread Lord of Essos by Dasteiza reviews
Harry, as a being of great power decides to take a vacation on a new world. Building a new empire won't be easy, but it will sure be fun. Westeros and Essos better watch out for the Dread Lord Harry/Multi
Crossover - Harry Potter & Game of Thrones - Rated: M - English - Fantasy/Adventure - Chapters: 18 - Words: 70,865 - Reviews: 486 - Favs: 3,184 - Follows: 3,920 - Updated: 11/2 - Published: 10/22/2020 - Harry P., Daenerys T., Cersei L., Melisandre
Darth Vader as Severus Snape by Shadow7Blue reviews
What if 16 year old Severus Snape had been influenced by more than the dark arts and the loss of Lily. If Severus had been reached by a being from a galaxy far, far away. What if Anakin Skywalker or rather, Darth Vader had died when he was left burning by Obi-Wan. (Harry Potter and Star Wars)
Crossover - Star Wars & Harry Potter - Rated: M - English - Adventure/Romance - Chapters: 24 - Words: 121,863 - Reviews: 104 - Favs: 215 - Follows: 268 - Updated: 11/2 - Published: 9/8 - Darth Vader, Hermione G., Lily Evans P., Severus S.
Shinobi between wizards and witches by Dallas Sasaki reviews
"hem hem!" Dolores interrupted the director, saying her monologue about how the Ministry of Magic wanted to interfere with Hogwarts without directly admitting it. "thank you for the illuminating words Professor Umbridge. Now to finish with any announcements so you can go to your dorms... I want to announce that I got a unique opportunity for Hogwarts students, so it's..."
Crossover - Harry Potter & Naruto - Rated: K+ - English - Adventure/Drama - Chapters: 2 - Words: 2,638 - Reviews: 9 - Favs: 58 - Follows: 94 - Updated: 11/2 - Published: 5/6 - Harry P., Anko M., Naruto U., Kakashi H.
The Last Energybender: Earth by MistressOfDeath09 reviews
Following the events of the Northern Water Tribe, the gang is now on their way to the Earth Kingdom to look for an Earthbending teacher for Aang. The war planning takes a few extra turns, especially by the appearance of another royal, hell-bent on capturing their arses.
Crossover - Harry Potter & Avatar: Last Airbender - Rated: T - English - Adventure/Friendship - Chapters: 21 - Words: 119,419 - Reviews: 178 - Favs: 548 - Follows: 652 - Updated: 11/2 - Published: 1/24/2021 - Harry P., Aang, Sokka, Katara
Caged Instincts by MistressOfDeath09 reviews
Rose was looking for a nice vacation time before returning to her regular life. Only to have a few bombs dropped on her head- Fury is assassinated, SHIELD is HYDRA, and Steve ad Nat become wanted fugitives. As if things couldn't worse, buried truths are unburied and Rose is forced to make a hard decision between her friend and her revenge. Fem! Harry. Sequel to Consequences
Crossover - Harry Potter & Avengers - Rated: T - English - Drama/Adventure - Chapters: 46 - Words: 252,030 - Reviews: 273 - Favs: 292 - Follows: 360 - Updated: 11/2 - Published: 2/5/2021 - Harry P., Black Widow/Natasha R., Captain America/Steve R., Hawkeye/Clint B.
Alea iacta est by MistressOfDeath09 reviews
Usually, people's lives change after a phone call. But not in Tony Stark's case. His life changed after the lack of a phone call. That quickly led to a turn of events he hadn't expected, namely in the form of a daughter. How can Tony raise a magical daughter when he wasn't sure he could take care of himself? Fem!Harry. Prequel to the Rose Stark Series. Can be a standalone read.
Crossover - Harry Potter & Avengers - Rated: T - English - Adventure/Family - Chapters: 8 - Words: 27,141 - Reviews: 80 - Favs: 338 - Follows: 458 - Updated: 11/2 - Published: 10/15/2021 - Harry P., Iron Man/Tony S., War Machine/James R.
Harry Potter and the Vampires Kiss by Arkronicus reviews
Harry sneaks out one night to clear his head and meets a girl in the park. Rated M for language later on. Some Dumbledore and Weasley bashing
Crossover - Harry Potter & Hotel Transylvania - Rated: M - English - Fantasy/Romance - Chapters: 5 - Words: 5,615 - Reviews: 29 - Favs: 248 - Follows: 331 - Updated: 11/2 - Published: 2/16 - Harry P., Mavis
The War of Titans by PerseusPeverell092 reviews
Torn from his Universe, Harry Potter arrives into one filled with Aliens, Mutants, Super-soldiers, Armored suits, Assassins, and Eldritch beings of unimaginable power. What will he do in a place where men like him are seemingly present at every corner, where he isn't the most powerful being anymore, especially when all he wants is to get revenge.
Crossover - Harry Potter & Marvel - Rated: M - English - Adventure/Supernatural - Chapters: 19 - Words: 113,153 - Reviews: 497 - Favs: 2,591 - Follows: 3,376 - Updated: 11/2 - Published: 1/31/2021 - [Harry P., C. Danvers/Ms. Marvel/Captain Marvel, J. Grey/Marvel Girl/Phoenix, Wanda/Scarlet Witch]
Harry Peverell, Lord of Harrenhal by AlexL61 reviews
Dark Lord Harry Potter is transported to an unknown land and must learn how to navigate this new world. He reunites with his family and friends and decides he can run Westeros better than these petty Lords. Very AU Harry/Astoria, Neville/Susan. Dark!Harry Magical Harry in a very non-magical world.
Crossover - Harry Potter & Game of Thrones - Rated: M - English - Adventure/Fantasy - Chapters: 4 - Words: 23,083 - Reviews: 60 - Favs: 576 - Follows: 800 - Updated: 11/2 - Published: 9/15 - [Harry P., Astoria G.] [Neville L., Susan B.]
Wands and Claws by JustBored21 reviews
Harry Potter is the 'boy-who-lived', is that all? No, because he and his sister are mutants as well. One day Harry and his sister find themselves rescued from experimentation and taken to live with the X-Men and Grandpa Wolverine. How would Hogwarts handle a mutant and proud pair of Potter's? Select character bashing, crossover story.
Crossover - X-Men & Harry Potter - Rated: M - English - Adventure/Romance - Chapters: 25 - Words: 71,347 - Reviews: 2011 - Favs: 4,620 - Follows: 5,573 - Updated: 11/2 - Published: 10/6/2020 - [Harry P., Emma F./White Queen, Jean-Grey S./Phoenix] James H./Wolverine/Logan
Harry Potter got trained by Driver1985 reviews
On the night Harry would have been dropped off by his Aunt, Dumbledore had someone else in mind. What if Harry was taken in by other strong people and they even decided to train him? Trained to be a Warrior by Wolves and the UNSC, he will change the world. OP, smart, trained Harry, small harem double cross with witcher and halo
Crossover - Harry Potter & Halo - Rated: T - English - Fantasy/Sci-Fi - Chapters: 58 - Words: 267,355 - Reviews: 112 - Favs: 447 - Follows: 537 - Updated: 11/2 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
She Venom by XenoBlaze reviews
After the death of Sirius Black and learning a few horrible truths, Harriet Potter's rage and anguish attracts a parasitic alien lifeform. Bonding with this symbiote, Harriet returns to magical Britain for payback. But Harriet soon discovers that there are others interested in her and her new special friend.
Crossover - Harry Potter & Marvel - Rated: M - English - Adventure/Fantasy - Chapters: 2 - Words: 10,530 - Reviews: 18 - Favs: 106 - Follows: 137 - Updated: 11/2 - Published: 10/16 - [Harry P., Luna L.]
Harry and Kelly: Fortius Quo Fidelius by Ijustwanttobeme reviews
While on Vacation with his relatives in Washington D.C. Harry watched the car crash that killed Shannon Gibbs and the agent in charge of protection. Harry saves 8 year old Kelly and together they find safety, family, and maybe more. Watch as Harry gains more purpose and guidance, a family he has always wanted, and a strict moral code taught by none other than US Marine Scout Sniper
Crossover - Harry Potter & NCIS - Rated: T - English - Family/Hurt/Comfort - Chapters: 10 - Words: 14,438 - Reviews: 103 - Favs: 259 - Follows: 385 - Updated: 11/2 - Published: 10/20 - Harry P., Leroy Jethro Gibbs, Kelly G., Jackson Gibbs
The Wonderful Wizard Of Awesome by SrA JDB reviews
A Harry Potter/Warcraft crossover piece. Jaina Proudmoore falls asleep while studying one night, and wakes up in Diagon Alley the next morning. She quickly befriends the similarly studious Hermione Granger, who encourages her to go with her to Hogwarts to study magic together. Despite her homesickness, she gradually grows quite fond of her new world.
Crossover - Warcraft & Harry Potter - Rated: T - English - Fantasy/Friendship - Chapters: 4 - Words: 15,097 - Reviews: 2 - Favs: 12 - Follows: 15 - Updated: 11/2 - Published: 10/20 - Hermione G., Jaina Proudmoore - Complete
Out of Time: 1942 by Spirit of the Night Owl reviews
In a prom dress and a black leather jacket—toting a crossbow—Buffy goes underground to face the Master. Then a bite and a mucky puddle sends her to elsewhere—where she's found by the boy who made all the wrong choices. Can he be saved or will they run out of time?
Crossover - Buffy: The Vampire Slayer & Harry Potter - Rated: M - English - Romance/Fantasy - Chapters: 36 - Words: 123,519 - Reviews: 113 - Favs: 42 - Follows: 54 - Updated: 11/2 - Published: 8/10/2021 - Buffy S., OC, Tom R. Jr., OC
An Opus Alchymicum Vol 1: The Experimental Theologian's Apprentice by Th3Alchemist reviews
Hermione Granger and her dæmon, Papageno, live content in Oxford, until a meeting with a woman named Lyra changes everything. Drawn to the aid of Harry Potter - a boy she's never met, but is destined to love - Hermione's adventure will take her on a perilous trek to the frozen North, to bears, witches and painful sacrifice, all to save the life of a lover promised by Dust itself.
Crossover - Harry Potter & His Dark Materials - Rated: K - English - Adventure/Mystery - Chapters: 25 - Words: 89,378 - Reviews: 7 - Favs: 30 - Follows: 36 - Updated: 11/2 - Published: 7/14 - [Harry P., Hermione G.] Sirius B., Lyra B./S./Lizzy B. - Complete
Where do twenty questions lead? Death may know! by eyeseemore reviews
Harry meets Merle on a rooftop in Atlanta. After twenty questions, he finds himself enthralled with the ruff man and decides to follow him and his brother (and maybe their group). Or maybe, Death feels that Harry deserves a second – albeit fucked up – chance at life. Throw in a George, Ron, Draco, Daryl, and Merle and see what you will get. Also posted on AO3 (same user name)
Crossover - Harry Potter & Walking Dead - Rated: T - English - Adventure/Romance - Chapters: 18 - Words: 120,233 - Reviews: 85 - Favs: 511 - Follows: 667 - Updated: 11/2 - Published: 3/4/2021 - Harry P., Luna L., Daryl D., Merle D.
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