It’s no surprise that there is a vast number of Harry Potter and Avengers crossover fanfictions. After all, both fandoms have their own legions of devoted fans, and the two universes share a lot in common. From Magic to Superpowers, from Quidditch to battles against evil super-villains, it’s not hard to see why these franchises would mix together so well. However, just because they’re popular doesn’t mean they’re all good. In fact, many of them are terrible! But don’t worry; we’ve done the work for you and scoured the internet for the best of these stories, so you don’t have to waste your time on bad ones. Keep reading for our list of five top Harry Potter and Avengers crossover fanfictions.

Harry Potter Avengers Crossover Fanfiction

What is Harry Potter and Avengers Crossover Fanfiction?

Harry Potter and Avengers Crossover Fanfiction is a type of fanfiction in which the characters from both fictional universes are brought together. This is done by having the characters meet and interact in some way, but it can also be done by having them exist in the same universe. For example, fans may want to explore the relationship between Harry and Doctor Strange or Hagrid and the Hulk – one thing we know is that these stories are hugely entertaining.

Why Read Harry Potter and Avengers Crossovers?

As with any piece of writing, what makes a good crossover fanfiction is subjective to the reader. However, there are certain things that most people look for when reading crossover fanfiction, such as character development and seeing their favorite characters from different universes interact with each other. Fans love how the different worlds collide and what new things are introduced as a result. Finally, crossovers can be used to explore different possible scenarios and storylines that wouldn’t be possible in the original works.

Note: If you prefer to read about the Avengers, we have picked out our Best 11 fanfics for you.

What to Expect From Harry Potter and Avengers Crossover Fanfics

Crossover fanfiction can be of all different lengths and genres. As such, it’s impossible to generalize what you might expect from a Harry Potter and Avengers crossover fanfiction. However, most of them will probably have elements of action, adventure, humor, and romance. The tone can also vary greatly, with some stories being dark and serious while others are light-hearted and humorous. One thing that is common with the best crossover fanfictions, is that they can be extremely fun. This is likely because the authors must not only be familiar with both universes but also be able to juggle the characters and plotlines from both.

Note: If you like Harry Potter, here are some fanfictions that are good enough to be canon.

8 Best Harry Potter and Avengers Crossover Fanfiction

Okay, so here goes. We have searched and found the best Harry Potter and Avengers fanfics, so you don’t have to. Hopefully, this list will be a good starting point for fans of one or both of these series. Enjoy!

Note: Some of the below stories are incomplete but are updated by the author when new chapters are written.

1. Mirror Mirror

Author: Sythe

Chapters: 9

Words: 53,461

Story: Step into a world of magic and mayhem with Mirror Mirror. This unique crossover novel blends the worlds of Harry Potter and the Avengers, creating an unforgettable story that will keep you glued to the page. When Harry makes a wish in front of the mirror of Erised, he never expects it to come true and one day, Bruce Banner wakes up naked in his apartment, with no idea how he got there. It is not too long before SHIELD discovers human magic and tries to weaponize it, throwing the world into chaos. Can Harry and Bruce put a stop to it before things get too out of control? Widely hailed as the very best Harry Potter Avengers crossover ever written, Mirror Mirror will not fail to entertain!

2. Enharmonic Interval

Author: Locked Owle

Chapters: 6

Words: 56,889

Story: This fan-favorite tale is set after Goblet of Fire and before the first Avengers movie and follows Harry as he joins SHIELD and embarks on a whole new adventure. If you’re looking for a story that meshes the Harry Potter and Avengers universes together perfectly, look no further than Enharmonic Interval. With exciting plot twists and lovable characters, this story is sure to keep you entertained from beginning to end. So, what are you waiting for? Read today!

3. Crestfallen

Author: Lionna

Chapters: 31

Words: 65,278

Story: Crestfallen is a brilliantly written, fast-paced adventure that will leave you breathless. When Harry lands on Asgard, he must quickly adapt to the strange and dangerous world he finds himself in. With gods and wolves immediately after him, Harry has his work cut out, but luckily, he’s always been the adaptable sort. Crestfallen is a fantastical mashup story that is so good, you will want to devour the whole thing in one sitting. So, strap in and enjoy the ride!

Author: Whispering Darkness

Chapters: 1

Words: 3,262

Story: Following the war, Harry takes a vacation but where Harry goes, trouble is sure to follow. Incredulously, this time it is aliens that are causing mayhem and destruction. This is an amazing and hilarious Harry Potter Avengers crossover that will have you laughing out loud. If you’re looking for a great read that’s light and entertaining, look no further than Legal Alien! This one-shot is finely written and imaginative and well worth the 5 minutes it will take to read.

5. The Orphanage

Author: CakeTops

Chapters: 4

Words: 6,236

Story: This story is truly a unique concept that will leave you wanting more. I will not give any spoilers for this except, this is an incredibly fun story that unfortunately seems to have been abandoned by the author after just 4 chapters. If you want to read an incredibly brilliant intro to a story with endless possibilities, this crossover is for you. Who knows, this may give you the inspiration to pick up where this author left off and create something amazing. Although the story is incomplete, I implore you to read these 4 chapters, you will not be disappointed.

6. Unchanging

Author: Z fire

Chapters: 1

Words: 4,585

Story: This story has left all that have read it begging for more. It is unclear from the author if this was intended as a one-shot or if the story was abandoned after just one chapter. With Harry going to work for Tony Stark, what could go wrong? Funny, witty and page-turning excitement, this story leaves you mesmerized until the very end and wanting more! So, if you’re looking for an excellent Harry Potter Avengers crossover, look no further than Unchanging!

7. Mischief Managed | Loki

Author: CaptainScuddles

Chapters: 24

Read Time: 4h 23m

Story: Move into Stark Tower with your favorite Avengers characters! This Avengers fanfiction takes the characters to unexpected places and shows you sides of them you’ve never seen before. The Avengers save the world, but Tony Stark finds out that the aftermath is hard on everyone, he assembles the team and moves them into Stark Tower so they can all heal. Along the way, they learn some things about themselves and each other. With action, heart, and plenty of feels, Assembles We Are Strong is not to be missed!

8. Thunder Arrives | Harry Potter

Author: Redwings_birdss

Chapters: 72

Read Time: 4h 6m

Story: An excellent story following Thor’s daughter on her journey through her first 3 years at Hogwarts. The bonus is that this in fact 3 stories in one and this story also has a sequel written by the same author so you can immerse yourself in this Harry Potter Avengers crossover. With exciting plot twists around every corner, Thunder Arrives will keep you entertained from start to finish. So, crack on and enjoy the read!


This article has given you 8 of the best Harry Potter Avengers fanfiction stories out there. If this sounds up your alley, be sure to read them all! They are well worth it and will give you hours of entertainment. We hope that our list helps narrow down your search for a good crossover story so you can get back to reading instead of searching for stories to read.

Did You Know?

“Thunder Arrives was written by a young lady from Holland when she was just 14! – Talented Much!”

“Marvel and Harry Potter are 2 of the most popular universes that can be combined into a single story!”

“Many fanfictions go unfinished or are abandoned because the comments and feedback are mean and abusive instead of genuinely constructive – people need to realize that the authors are doing this out of love and not for profit!”


What characters are in Harry Potter Avenger crossover stories?

The beauty of this genre of fanfiction is that any characters from either universe can be used. I have seen stories with Loki, Thor, Harry and Hermione and others with Harry, The Hulk and Iron man. The possibilities are endless.

Why do people read Harry Potter Avenger crossovers?

The Harry Potter Avengers crossover genre is incredibly popular because it offers something new. It takes two stories that people love and mashes them together to see what happens. It’s like a meet-up of all your favorite people!

Can I write a Harry Potter Avengers crossover?

Yes, anyone can write fanfiction stories and make them as diverse as they like. Crossover stories are the ultimate fantasy within a fantasy. If you have the desire and the time, you can write too.

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