20 Most Popular Harry Potter Crossover Fanfiction Stories in 2024

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Looking for the best Harry Potter crossover fanfiction? You’re in the right place!

Harry Potter is a series of books and movies that follow the life of a young wizard boy. 

There are seven books in the series, along with eight films, many spinoff novels and movies, video games, toys, and so much more!

This is a massive franchise that is hugely popular around the world. 

It makes sense, then, that there would be a massive amount of Harry Potter fanfiction out there, as the fan base for this franchise is so large. 

Though there are a lot of fanfiction stories that focus on the world of Harry Potter, there are plenty that incorporate characters from other realms, as well. 

Harry Potter crossover fanfiction is one of the most popular genres of fanfiction. 

This article will explore some of the best Harry Potter crossover fanfiction stories and merch like this:

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Keep reading to learn more!

1. Holly Potter and the Midlife Crisis

In a world where superheroes save the day, a lesser-known hero tackles a different kind of challenge — cleaning up after the Avengers. 

The protagonist Holly Potter is a seasoned wizarding savior, who deals with the chaotic aftermath of the Avengers’ adventures.

Our hero is undeterred as she navigates pranks, bird corpses, and unidentified slime.

Accustomed to cleaning up after Death Eaters, she approaches the task with resilience and determination.

However, someone among the Avengers has turned the clean-up into a game, making her mission more challenging than ever.

Will she be able to maintain order amid superhero chaos, or will the mess prove too much for even the Savior of the Wizarding World?

2. Harry Potter and the Lack of Lamb Sauce

This Harry Potter crossover fanfiction is a unique crossover with the reality cooking shows Hell’s Kitchen and Master Chef.

This story takes place in Harry’s sixth year at Hogwarts.

This is the year Professor Snape finally achieves his dream of being the Defense Against the Dark Arts teacher, so the position of Potions master is available.

The teacher who comes to fill the position is not at all who any of the students are expecting.

The new Potions master is none other than Gordon Ramsey.

As you can imagine, this makes for some exciting lessons and a new take on the Potions course.

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3. On Punching Gods and Absentee Dads

In this Harry Potter crossover fanfiction, we get to enter the Marvel Cinematic Universe, specifically focusing on Thor.

This story opens with Harry learning that his father is alive and that he has been hiding since he was a child.

Instead of being thrilled and excited by this news, Harry is furious and wants revenge on his father.

Harry sets out to find his father, with his powers growing more robust and uncontrollable by the day.

This story is dramatic and angsty, but it also contains a lot of great moments of friendship and love. 

Without giving too much away, this story has a pleasing ending and is not one to miss!

4. Snipers Solve 99% of All Problems

Next up is a Harry Potter crossover fanfiction that incorporates the world of Full Metal Alchemist. 

This story focuses on Ed Elric from Fullmetal Alchemist but still has plenty Harry Potter content. 

In this story, Ed is thrown into the Wizarding World. 

He is not happy about dealing with wizards and witches, and he finds them to be a bit nonsensical and loony.

Nonetheless, he must help them rectify a situation, all while managing to deal with their magic and powers that he does not particularly care for.

This is a great story that is full of humor and a bit of adult content.

If you are looking for a story that glorifies the world of Harry Potter, this may not be the one for you, as it calls out many plot holes and mistakes in the series.

5. He’s a Killer Queen, Sunflower, Guillotine

Up next is another Harry Potter crossover fanfiction with Fullmetal Alchemist. 

This story takes place at Hogwarts, and a new student has just arrived to shake things up. 

This new student, Edward Elric, is sorted into the Hufflepuff house, where he quickly finds that he does not quite fit in. 

The other Hufflepuffs are wary of him, and he does not exactly go out of his way to make friends or charm anyone. 

This story has some original characters alongside the existing characters that we know and love.

The author has done a great job of making the fun interactions between characters feel authentic to the Harry Potter world. 

6. Padfoot and Hound

Next up is a Naruto and Harry Potter crossover fanfiction. 

This story focuses primarily on Sirius Black. 

In this story, the ANBU Hound wakes up in England in 1993, where he finds a half-starved dog. 

Sirius wants to find his godson and avoid getting captured, while Kakashi intends to return to his country. 

The two team up to achieve their goals for a unique pairing you won’t find anywhere else. 

This story has a lot of angst and turmoil, but there is also some humor and great storytelling.

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7. Yuu and the Power of Magic

In this Harry Potter crossover fanfiction, we experience Twisted Wonderland‘s world

This video game plays on many of the elements of Alice in Wonderland but with some interesting new takes. 

In this story, Yuu is a fifth-year student at Hogwarts. 

On the first day of school, she wakes up in an unfamiliar world called Twisted Wonderland, not at Hogwarts. 

Of course, this is jarring and frightening, but Yuu is charmed by this world and its strange charms. 

Nonetheless, Yuu knows she needs to return to the Wizarding World, but this is not as simple as it seems. 

This lengthy story is still a work in progress, and it follows all of the twists and turns that Yuu faces on her journey back to Hogwarts. 

8. Cupboards and Cryogenics

Up next is another Harry Potter crossover fanfiction with the Marvel Cinematic Universe. 

This story has countless cameos from various Marvel characters but primarily focuses on Captain America and Iron Man. 

This fanfic opens with HYDRA sending The Winter Soldier to retrieve four-year-old Harry Potter. 

The outcome of this mission is not what anyone expected. 

This is an excellent choice if you are looking for an exciting story. 

We get to see many different characters interact with and care for young Harry, and they are delightful to read. 

This story is still a work in progress, but there is plenty of great content for now!

9. Falling Leaves of Evergreen Trees

The next Harry Potter crossover fanfiction we will read is a crossover with the world of Naruto. 

This story does not have as much magic as many other crossovers, but it is just as captivating and enjoyable to read. 

This story has a lot of world-building and character development, and the author is a talented writer. 

Though many have tried, no one has been able to kill Harry Potter, at least not for long. 

Harry seems to keep returning from the dead.

Each time, he is more potent and more challenging to kill. 

This is a fascinating story with a unique plot.

10. Business

The next Harry Potter crossover fanfiction is a fusion with the world of Sherlock Holmes. 

This short story is only 12,000 words, but it is just as captivating as the others on this list. 

We see a different side to Harry in this story: he is dark, cunning, and incredibly confident. 

He is the opposite of the young, inexperienced boy we know him to be. 

These darker traits can be traced back to the Dursleys and how they raised him. 

Everything Harry did while growing up was wrong.

Meanwhile, everything that Dudley did was right. 

Harry’s upbringing has lasting effects on him and the person he grows up to be. 

This is an exciting and well-written story you may want to read repeatedly.

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11. Breathe (Don’t Falter)

This Harry Potter fanfiction is another crossover with the world of Naruto. 

This story deals heavily with mental health and goes into great detail about some common mental health issues. 

This story is unique because, in this story, Harry is reimagined as a girl named Jasmine Potter. 

This small change makes a difference and seeing how it all plays out is fun! 

The author of this story has written a great crossover that flawlessly combines many of the best elements of both Harry Potter and Naruto

It is not easy to write such a captivating and complicated story, but this author is very skilled.

12. Man of Iron, Child of Magic

In the aftermath of the Chitauri invasion, Tony Stark uncovers a startling truth — he’s the father of Harry Potter

Juggling his tech-savvy life with the magical realm, Tony and Harry go on a unique journey of discovery, combining Iron Man’s brilliance with the Wizarding World’s enchantment.

As father and son navigate the challenges of dual worlds, an old foe resurfaces, threatening Muggles and wizards alike. 

Can Tony’s ironclad ingenuity merge with Harry’s magical prowess to save their lives and the fate of the two realms?

Join Tony Stark and Harry Potter as they rewrite the rules of heroism in a universe where the line between magic and machinery is beautifully blurred.

13. Cheap Thrills

If you’re a fan of Harry Potter, anime, movies, and all that good stuff, this fanfiction collection is for you!

It features short stories about The Boy Who Lived in different instances beyond the Wizarding World.

From Game of Thrones to Naruto — the author certainly doesn’t hold back with their crossovers. 

A fun must-read for Potterheads looking for something beyond the magic of Harry Potter.

14. Wands and Arrows

This collection of short stories will have you hooked from start to finish! 

With just five chapters, this quick and compelling read is perfect for revisiting whenever you need a dose of excitement.

Explore unique tales about the dynamic relationships between Draco Malfoy and Harry Potter, unraveling mysteries in the enchanting Wizarding World

Alongside, witness the captivating stories of Clint Barton and Natasha Romanov, adding an extra layer of intrigue to this well-crafted collection.

Don’t miss out on this riveting and skillfully written assortment — it’s a literary journey worth taking!

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15. How Harry Became an Avenger

Harry donned a healer’s robes post-war, working for seven years at St. Mungo’s. 

But the daily grind has gotten old, and he’s itching for a change

His chosen destination is a catalyst for more than just a shift in scenery — cue intriguing consequences and a neighborhood brimming with mysteries.

How did he become an Avenger anyway?

16. Misunderstandings and An Alien Invasion

Once, Harry single-handedly thwarted an alien invasion, inadvertently earning himself the title of a supreme being, gifted with limitless cosmic might. 

Extraterrestrial forces are on the brink of conquering Earth, and chaos reigns supreme. 

But amid the uproar, Harry steps up, defying the odds. 

His actions save the day and convince the entire universe that he is a powerhouse of incomprehensible cosmic prowess

It was a case of mistaken identity, but for a moment, Harry became the unwitting hero mistaken for a deity.

17. Gringotts’ Lesser-known Branch

The Wizarding World remains clueless about the intricate workings of the Goblin Nation and its corporate ambassador, Gringott’s Bank.

Little do they grasp how far these Goblins will go to safeguard their investments.

It’s a secret realm, a financial fortress, and those who think they’ve figured it out might be in for a rude awakening.

The Goblins play hard, guarding their interests with a ferocity that rivals a dragon’s protective instincts.

In the shadows of Gringott’s, a silent power play unfolds, and those who underestimate the cunning of the Goblin Nation are in for a magical rollercoaster of surprises.

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18. Smaller Than Expected, but Still Terrifying

The next Harry Potter crossover fanfiction is another one with everyone’s favorite Iron Man — Tony Stark.

Tony finds himself stranded in the desolate wilderness, his mind trapped by an otherworldly scepter. 

The impending clash with his former team looms, the entire day becoming an absolute disaster with no silver lining.

But just when things can’t get any worse, his soulmate swoops in.

His soulmate, named — Harry Potter.

19. A Lesson in Superiority

In a surprising turn of events, young Damian Wayne, the latest Robin in Gotham, discovers that he is not only the biological son of Talia al Ghul but also a wizard with ties to magical Britain. 

Unveiling a past shrouded in secrecy, Talia’s attempt to shield Damian from Ra’s al Ghul’s influence leads to tragedy.

A decade later, Damian must navigate the complexities of being a wizard, a Hogwarts student, Heir Potter, Slytherin, a Wayne heir, and the vigilant Robin. 

Damian Wayne, alias Harry Potter, embarks on an extraordinary journey, juggling magical legacies and crime-fighting duties in a tale that combines the mystique of the Wizarding World with the grit of Gotham City.

20. The Lost and Forgotten

Albus Dumbledore’s bold decision to drop a five-year-old in a distant alleyway across the ocean unknowingly sets the stage for an extraordinary life. 

Little does he know, he’s just handed Jade Black the ultimate shot at a thrilling existence.

Get ready to dive into the rollercoaster of Jade’s life, where she blossoms alongside an expanding family of superheroes. 

From that alleyway to the heart of adventure, follow her journey as she embraces a life filled with courage, strength, and an ever-growing legacy of extraordinary feats.

As much as people bash Dumbledore, his influence is undeniable, so why not show off your support by sporting this cute sweatshirt?

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Harry Potter Crossover Fanfiction: Conclusion

I hope this article has helped you find some great Harry Potter crossover fanfiction!

These are just a tiny sample of all the fantastic stories.

So, you may want to look at the other fanfics with this tag and find your favorite among them.

If you have questions about this topic, please leave a message in the comments below!

Lastly, if you want to read more top fanfiction posts on this blog, then check out:

Before you go, you may want to get this epic Harry Potter journal, perfect for listing your favorite fanfics or, better, writing your own!

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Harry Potter Crossover Fanart Extras

Here are some of the extra Harry Potter crossover fanfiction fan art we’ve made over the years!

Hogwarts fantasy castle
Hogwarts Fanart
Black Widow Fanart
Bucky Barnes and Young Harry Potter Fanart
Naruto Fanart
Sherlock Holmes Fanart

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