Harry Potter Crossovers
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WBW: Hadrian the Emerald, The Gatherer by Lord Vidar Odinsen reviews
Having crossed through the Wood-Between-Worlds, Harry enters the world of Ea welcomed by Eru as a Maiar who will have the task of gathering the hearts of the children and creations of Eru, before the final battle can be fought. Will cover some events of the Silmarillion and the main books(much later).
Crossover - Harry Potter & Silmarillion - Rated: T - English - Chapters: 4 - Words: 7,020 - Reviews: 9 - Favs: 49 - Follows: 68 - Updated: 5/15 - Published: 3/26 - Harry P., Nienna
What do you see when you look in the mirror? by MadHattarProductions reviews
When Sirius went through the veil, Harry followed after him. What he hadn't expected was for them both to end up alive, but changed upon a new world. In this place they didn't have to be what was expected of them nor did they have to be anything but what they now were. It helps that all memories of their previous lives were gone and all they had was the present. Suck at summaries.
Crossover - Harry Potter & Lord of the Rings - Rated: T - English - Chapters: 5 - Words: 15,367 - Reviews: 13 - Favs: 124 - Follows: 205 - Updated: 5/15 - Published: 8/8/2020 - Harry P., Sirius B.
The Rule of Three by LordMythos reviews
What happens when the gods go rogue and try to destroy the multiverse? You unite the strongest trios, of course. The Golden Trio, the Big Three, and whatever the Avengers big three is, oh and mabey DC. CHAPTER ONE REDONE. Multiple Fandoms. Violence and Kinda Graphic.
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: M - English - Adventure/Friendship - Chapters: 1 - Words: 1,428 - Reviews: 1 - Favs: 6 - Follows: 4 - Published: 5/15 - Harry P., Hermione G., Percy J., Thalia G.
In a Land of Myth and a Time of Destiny by cshen.julienne reviews
"He's the most powerful man in the planet Hermione. Does he even need a protector?" Gwaine offered. Hermione frowned. Merlin has Arthur. But Prince Arthur, brave and righteous as he is, doesn't have magic. So then who would protect Merlin? Who would be there to save Camelot's greatest defender should the need arise? Who would be crazy enough to try and protect the most powerful wa
Crossover - Harry Potter & Merlin - Rated: T - English - Adventure/Romance - Chapters: 12 - Words: 28,858 - Reviews: 29 - Favs: 53 - Follows: 84 - Updated: 5/15 - Published: 3/19/2020 - Hermione G., Arthur W., Merlin, Gwaine
WBW: The Grand Mediator by Lord Vidar Odinsen
With each Civilization, the Lord eventually calls both a Savior and Destroyer from among mortals, and they along with the Seven Mortal Sins and Heavenly Virtues of their age, determine whether their civilization will thrive for centuries or fall. Every time except once has the fall happened, and that one time was due to a Mediator, wielding Excalibur bringing both groups together.
Crossover - Harry Potter & Seven Mortal Sins/sin 七つの大罪 - Rated: M - English - Chapters: 3 - Words: 6,318 - Favs: 12 - Follows: 13 - Updated: 5/15 - Published: 4/17 - Harry P., Lucifer, Maria Totsuka
Joining Forces by Peony123 reviews
Chiron gives a mission to three demigods. They must go to Hogwarts to complete a task. There they meet the golden trio. Will they learn to join forces to face a rising enemy?
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: T - English - Chapters: 40 - Words: 53,009 - Reviews: 73 - Favs: 89 - Follows: 113 - Updated: 5/15 - Published: 5/14/2020
The Old Straight Track by ZanyNY reviews
Auror Potter arrives in the USA tired, jaded, and more than a little resentful. Transferred involuntarily to MACUSA, he is tasked with investigating the unusual town of Mystic Falls, a town which is proving nothing but a Statute of Secrecy migraine for US officials. With the layers of local politics the key to unlocking this case, Harry might have bitten off more than he chew.
Crossover - Harry Potter & Vampire Diaries - Rated: M - English - Chapters: 10 - Words: 38,685 - Reviews: 13 - Favs: 91 - Follows: 140 - Updated: 5/15 - Published: 2/22 - [Harry P., Damon S.]
Time is a Valuable Thing by purastella reviews
For so many years her parents had told her that it would always be her choice. But as she stared down at the blood dripping from her fingers, Mia thought that maybe her fate had already been decided long ago. Perhaps she was simply a puppet whose strings had just been cut and all that was left for her to do now was to continue falling and wait for the shatter as she hit the ground.
Crossover - Harry Potter & Avengers - Rated: M - English - Drama/Angst - Chapters: 21 - Words: 126,279 - Reviews: 454 - Favs: 522 - Follows: 904 - Updated: 5/15 - Published: 11/10/2019 - Hermione G.
Blood in the Water by purastella reviews
When Gideon pointed out that the current Hermione Granger would be neither welcome to his presence or their cause and that it might be a better idea to travel back and retrieve her at a different point in time, Rip just smiled. "No, Gideon. I don't need Wizarding Britain's Hero for this endeavor- I need their villain. This Hermione Granger is exactly who I'm looking for."
Crossover - Harry Potter & Legends of Tomorrow - Rated: M - English - Adventure/Romance - Chapters: 8 - Words: 72,593 - Reviews: 65 - Favs: 82 - Follows: 136 - Updated: 5/15 - Published: 8/8/2020 - [Hermione G., Leonard Snart / Captain Cold]
Widow's Vengeance by JustBored21 reviews
Natasha Romonaoff and Hawkeye found themselves teleported into another world, only they were now babies. As they grew up they discovered their magic, they knew about magic before, 'how' you might ask. Simple, they had known thanks to Natasha's dead husband who had actually travelled to their world from his own, his name was Harry Potter. And guess what, he's alive and young now.
Crossover - Harry Potter & Avengers - Rated: M - English - Romance/Adventure - Chapters: 15 - Words: 40,490 - Reviews: 633 - Favs: 1,985 - Follows: 2,667 - Updated: 5/15 - Published: 1/15
Demigods, supernaturals, wizards and Pure, pure chaos by Fanfic 09 reviews
Canon ships include Theyna and Frazeleo regular ships. Might add Kc and/or MCGA later
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: T - English - Chapters: 16 - Words: 7,892 - Reviews: 45 - Favs: 5 - Follows: 2 - Updated: 5/15 - Published: 6/1/2020
The Witcher: Death's Coming by spradleythomas41 reviews
After her world is destroyed Helena Perevell is offered a second chance by Death. How will the story of the White Wolf and Swallow change when they meet The Master of Death. (Hiatus)
Crossover - Witcher & Harry Potter - Rated: M - English - Adventure/Fantasy - Chapters: 3 - Words: 6,270 - Reviews: 22 - Favs: 113 - Follows: 157 - Updated: 5/15 - Published: 12/14/2020
Warmth of the southern sun by TheWickedRainbow reviews
A oneshot crossover, with focus on Susan before and after her family dies, and how she gains knowledge of the magic world in her own world, and ho she changes things for Harry. NO SLASH.
Crossover - Harry Potter & Chronicles of Narnia - Rated: T - English - Hurt/Comfort/Spiritual - Chapters: 1 - Words: 1,666 - Reviews: 1 - Favs: 8 - Follows: 5 - Published: 5/15 - Harry P., Susan Pevensie - Complete
The Hatchling by Ms Kitty Black reviews
When arms dealer Anton Baclovitch murders a seemingly insignificant MI6 agent, and the Avengers are drafted to assist in the investigation, one team member will be unexpectedly reunited with their past. Can they overlook their history for the benefit of the investigation or will their emotions cloud their judgment? WARNING SPOILERS. Post Age of Ultron.
Crossover - Harry Potter & Avengers - Rated: T - English - Family/Drama - Chapters: 25 - Words: 37,217 - Reviews: 173 - Favs: 516 - Follows: 766 - Updated: 5/15 - Published: 5/31/2015 - Harry P., Hawkeye/Clint B.
La Chronique du Savant by Sakka-Sensei reviews
Bonjour lectrices, lecteurs et très chers auteurs. Cette chronique a pour but de faire découvrir des FanFictions et des Auteurs talentueux. Je vous laisse découvrir ce projet avec la page de présentation ! Soyez nombreux à venir jeter un coup d'œil !
Crossover - Naruto & Harry Potter - Rated: T - French - Chapters: 40 - Words: 190,935 - Reviews: 50 - Favs: 18 - Follows: 35 - Updated: 5/15 - Published: 2/24/2018
The Roman General In Modern Britain by MariousPluton reviews
Harry potter is sent back in time to the Roman Republic before it became the Roman empire. But after he becomes a seasoned general he is returned. Will the modern wizards be able to handle him?
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: T - English - Adventure/Suspense - Chapters: 6 - Words: 6,069 - Reviews: 42 - Favs: 152 - Follows: 207 - Updated: 5/15 - Published: 7/8/2018 - Harry P., James P., Lily Evans P., OC
Professor Gandalf the Grey by Time Lord Consultant reviews
Gandalf the Grey, long before the events of the Hobbit, finds himself in a strange new world. He soon meets Dumbledore, and quickly earns a job. How did he get here? Why is he here? Was this the will of the Valar, or the will of evil? And how will he get back to the world he knows and loves? I seem to be on hiatus. Sorry.
Crossover - Harry Potter & Lord of the Rings - Rated: T - English - Adventure/Friendship - Chapters: 9 - Words: 41,535 - Reviews: 63 - Favs: 126 - Follows: 177 - Updated: 5/15 - Published: 5/28/2019 - Harry P., Severus S., Albus D., Gandalf
La Chronique des OS du Savant by Sakka-Sensei reviews
Bonjour lectrices, lecteurs et très chers auteurs. Cette chronique a pour but de faire découvrir des One-Shot et des Auteurs talentueux. Je vous laisse découvrir ce projet avec la page de présentation ! Soyez nombreux à venir jeter un coup d'œil !
Crossover - Naruto & Harry Potter - Rated: T - French - Chapters: 30 - Words: 98,121 - Reviews: 21 - Favs: 3 - Follows: 15 - Updated: 5/15 - Published: 11/16/2018
Metagaming? by Noodlehammer reviews
Third in series, read prequels or be confused. Harry had spent his whole life wishing for magic to be more abundant, and that was precisely what he got. He wasn't even particularly upset about the many serious dangers inherent in such a thing, for what was life without challenge? The irony of ending up in Azeroth after all the references was a bit on the nose, though.
Crossover - Harry Potter & Warcraft - Rated: M - English - Chapters: 10 - Words: 157,263 - Reviews: 2459 - Favs: 5,860 - Follows: 6,711 - Updated: 5/14 - Published: 9/20/2020
Harry Potter and the Original Family by Fantasy Writer '92 reviews
Harry thought he'd never get away from the Dursleys. Professor Dumbledore sent him back EVERY year. Finally when he goes too far with accidently blowing up "Aunt" Marge. A surprising new Family member steps in to protect him from Vernon. Soon Harry will discover he has more "Family" then he knows...
Crossover - Harry Potter & Vampire Diaries - Rated: T - English - Hurt/Comfort/Drama - Chapters: 23 - Words: 66,366 - Reviews: 396 - Favs: 1,312 - Follows: 1,554 - Updated: 5/14 - Published: 3/15/2019 - Harry P., Caroline F., Klaus
Top Harry Drabbles by uoduck reviews
What it says on the tin. A collection of drabbles devoted to top Harry. Most chapters will contain sex.
Crossover - X-overs & Harry Potter - Rated: M - English - Fantasy/Romance - Chapters: 89 - Words: 229,411 - Reviews: 786 - Favs: 715 - Follows: 759 - Updated: 5/14 - Published: 2/5/2017 - Harry P.
The War of Titans by PerseusPeverell092 reviews
The battle of New York, A god with an army vs the defenders of Earth. Their courage and powers against his powers and an endless stream of enemies. Tired and angry, when all seems like a continuous circle, Harry Potter appears and fights. Stranded in a world of humans, enhanced, mutants ,villains ,Gods and Titans, what will become of the Wizard destined for something much greater?
Crossover - Harry Potter & Marvel - Rated: M - English - Adventure/Supernatural - Chapters: 5 - Words: 35,500 - Reviews: 119 - Favs: 659 - Follows: 1,035 - Updated: 5/14 - Published: 1/31 - [Harry P., C. Danvers/Ms. Marvel/Captain Marvel, J. Grey/Marvel Girl/Phoenix]
Death's Deal: the Beginning by Arsao Tome reviews
I was asked to write my version of how 'Death's Deal' would be like. Chapter 10 is up.
Crossover - Harry Potter & High School DxD/ハイスクールD×D - Rated: M - English - Fantasy - Chapters: 13 - Words: 18,077 - Reviews: 94 - Favs: 467 - Follows: 527 - Updated: 5/14 - Published: 11/8/2017 - [Harry P., Rias G.]
Demigods and Wizards by Saplinggirl
A collection of Riordanverse and Wizarding world crossover headcanons.
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: K - English - Fantasy/Family - Chapters: 1 - Words: 207 - Favs: 2 - Follows: 1 - Published: 5/14 - Molly W., Dean T., Rachel D.
Supernatural Magics by AnnieArson reviews
Harriet "Harry" Potter has lived with the Dursleys since her parents were killed. Over the years she had learned to hate them, but not as much as they hated her. When a "camping trip" turns out to be the Dursleys getting rid of her, and she is left on the ground injured and alone, Harry gets introduced to the world of the Supernatural.
Crossover - Harry Potter & Supernatural - Rated: T - English - Adventure/Supernatural - Chapters: 23 - Words: 170,284 - Reviews: 389 - Favs: 1,103 - Follows: 1,503 - Updated: 5/14 - Published: 6/5/2020 - Harry P., Sam W., Dean W., Bobby S.
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