1 - 20 of 1,016 Works in Harry Potter Has a Twin
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Inora Eupemia Potter finally gets to go to Hogwarts. She is excited to make new friends and possibly build a relationship with her long lost brother. A chance encounter with a boy in Diagon Alley may very well be the start of her dreams come true.
________________In which Harry has a twin sister and their magic does some weird shit leading to a couple of problems and a few revelations throughout their first year.
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Some truths refuse to stay buried.
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What starts as a simple “Harry is a Malfoy” twist explodes into the story of Castor Malfoy—a creature-loving, rule-defying wizard making waves in the Triwizard Tournament and beyond. With a family he’s only just met, friends both human and not, a stack of jobs, and more secrets than he knows what to do with, Castor’s life is anything but ordinary. But in a world where lies travel faster than the truth and even a Dark Lord can’t decide whether to fear him or use him, one thing is certain: history will remember both his names.
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Mostly canon until the Goblet of Fire, aside from the whole kidnapping thing.
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The "What-If" Harry Potter had a twin sister called Cyrus Potter.
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Everyone knew Lucius and Narcissa's daughter went missing when she was less than two months old. Most assumed she was dead. Her mother, though, always hoped that her little Star, her Lyra, would come home to her.
Harriet Lily Potter was about to begin her fifth year at Hogwarts. She was still angry and hurt over what transpired the year before, watching Cedric die. That man's chilling voice still rang through her head like a mantra; kill the spare. No one wrote back to her, no one kept her informed. Harri was alone.
After dementors tried to kiss herself and her cousin, Dudley, Harri gets notified of her expulsion from Hogwarts for the use of underage magic in front of muggles. After explaining what happened, they decided to revoke the expulsion, but Harri was considered a new student again. She had to be sorted again.
Everyone, including Harri, are surprised when she gets sorted into Slytherin. Well, it was always what the hat wanted. She doesn't even make it a week before she has to do a mandatory screening with Madam Pomfrey. Secrets come to light, secrets that a certain headmaster hoped would stay buried.
Buried with the real Harriet Lily Potter.
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Hermione knew leaving Harry alone after fourth year was a big mistake. She knew what his relatives were like. When she can't seem to get help from the adults in her life she takes matters into her own hands and goes to get him for herself. How would she know that in doing so it would change all of their lives.
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Everyone knows Harry Potter, the Boy Who Lived—but history forgot his twin. Violet Potter survived Voldemort’s attack, saved by a magical couple and reborn as Mira Silverthorne, scarred and forgotten. Harry grows up celebrated, unaware of his sister’s existence, while Mira trains in secret, determined to reform the Wizarding World from within. Slytherin-born, strategic, and morally fierce, she wields power not for revenge but to challenge prejudice, fear, and stagnation. Love, loyalty, and secrets weave around her—especially Draco Malfoy, her unexpected ally and partner in ambition. The world may have chosen the wrong twin, but Mira intends to reshape it entirely.
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Heather Potter and The Sorcerer's Stone by romance_isamystery
Fandoms: Harry Potter - J. K. Rowling
28 Feb 2026
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They all knew Harry Potter, the boy who lived. But what if he had a twin sister?
Heather Lily Potter lived at Number Four, Privet Drive alongside her brother and The Dursleys. The Dursleys did not like them whatsoever. They reminded Harry how much of a freak he was and how his sister Heather was a spitting image of their mother; something that Petunia and Vernon did not like.
But when strange things start to happen, Heather hopes that their life will change for the better.
Series
- Part 1 of The Heather Potter Series
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The Undisclosed Files of the Hidden Potter by loverandadreamer
Fandoms: Hogwarts Legacy (Video Game), Harry Potter - J. K. Rowling
28 Feb 2026
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You’ve heard of the famous boy-who-lived, Harry Potter. His rise to fame, the prophecy and his fate tied to You-Know-Who. But did you know about his other half? Harry’s undisclosed twin sister? Hidden in the shadow of her brother, a secret in the making. A light in the dark with powers she doesn’t understand, friends she wouldn’t expect and someone from the other side who sees more than what she wants to show. This is the Undisclosed Files of the Hidden Potter.
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This is a story of a search for a boy, because all that's left is a monster with his face.
This is a story of a coin. People say it has two faces, but sometimes it also lands on its side.
This is a story of the past and the future. Neither is as simple as it seems, neither is the same without the other. They wear the same face.
This is a story of the moon, stars and sun, but it's far more than it looks. What is the sun, if not just another star? What is the moon if not the master of water, of life, same as the Sun?
This is a story of ghosts. There are more of them than you might think.
This is a story, where I know the ending, know the beginning and the middle pages are all torn and stained. As I manage to put things back together I don't know anything.
This is a story of a watcher. One that has been complacent for too long.
Investigation #0537[REDACTED]
Lead investigator: Unspeakable Maat
Subject of investigation: Hari Hyacinth, née Ewanowicz-Potter
Purpose: We've received numerous claims that Hari Hyacinth is some sort of cosmic lynchpin. That he has the potential to change things. This is us trying to understand, who or what he is and what drives him. -
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Harry Potter never stood a chance. Severus Snape was straight as a wand, still pining after Lily, and completely unattainable. That was the story - until Death tried to help.
Now, Harry wakes in another universe… as Hades Potter, twin brother to the so-called Savior. His parents are alive, the Marauders are just as insufferable, and the other Harry is a pompous show-off possibly dating Ginny Weasley. But Hades? He has one mission: win over this world’s Severus Snape.
Armed with memories from a life of war, a much darker kind of magic, and a dangerous secret prophecy, Hades navigates a fractured Hogwarts, makes unlikely friends, and unearths a future he never dared to imagine - if he can survive long enough to claim it.
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Flames of Old Valyria by rawanar
Fandoms: Harry Potter - J. K. Rowling, House of the Dragon (TV), Fire and Blood - George R. R. Martin
26 Feb 2026
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After falling in a final battle against the Dark Lord, Harry Potter's death wasn't the end as he thought it was. Death wove him back together, casting him into a world far different from his own. There, he was reborn as the second son of King Viserys and Queen Emma, and the younger twin of Princess Rhaenyra. But his old identity didn't disappear; the memories, knowledge, and power he gained in his previous life still haunted his soul. Between prophecies of fire and blood, and dragons roaming the skies, he must find his new place and decide: will he live only as a Targaryen prince? Or as the wizard who once defeated death?
Series
- Part 1 of Fragments of Eternity
- Part 1 of A Song of Magic and Thrones
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La estrella más brillante de la noche by DarkLordWolf
Fandoms: Harry Potter - J. K. Rowling
26 Feb 2026
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Harry Potter, el hermano gemelo olvidado del "Niño que sobrevivió", fue golpeado hasta la muerte por sus abusivos parientes Muggles. Sin embargo, su magia se negó a morir tan pronto; hurgó en lo más profundo de su alma y trajo consigo algo que le permitiría sobrevivir. ¿Quién será aquel que lo arrebate de su cruel y marcado destino?
Por otro lado, Tom Sorvolo Ryddle, alias Lord Voldemort, ha caído en los abismos más profundos debido a su adicción a las Artes Oscuras. Pero cuando su enemigo mortal y "igual" según la profecía —quien además resulta ser el guardián de un fragmento de su alma— acude en su ayuda, todo cambia. Harry le ofrece una segunda oportunidad para recuperarse de la locura y llenar el vacío creado por un destino despiadado. ¿Podrá Voldemort rechazar al pequeño generador de caos de ojos verdes que lo ha reclamado como su padre en todo, menos en la sangre?
Finalmente está James "Jim" Potter, el Niño que sobrevivió y la celebridad infantil del mundo mágico. Pero esa no es la vida que él desea. Hay algo que anhela con todo su corazón; algo por lo cual cambiaría toda su fama y gloria en un instante. ¿Qué es aquello que más desea en el mundo?
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Once Unrestrained: A Tale of a Forgotten Heiress and a Heavily Underestimated Heir by XxLunatixPixelxX
Fandoms: Harry Potter - J. K. Rowling
26 Feb 2026
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Evelyn's summer after 4th year takes an unexpected turn when Gellert Grindelwald shows up at her dingy orphanage claiming to be her grandfather, and a goblin from Gringotts casually mentions a twin brother she didn't know she had, someone whose magic has been blocked, unbeknownst to him, and is set to die before their seventeenth birthday.
Harry's summer after 4th year hasn't been great. Being told to trust the adults while being shut in Privet Drive has done it for him. He's got no information, and no reason to think anyone even cares about him except his supportive godfather, so he's done playing puppet, and meeting an odd grandfather-granddaughter pair at Diagon Alley changes everything.
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Heather Potter lived a miserable life that pushed her past her breaking point and beyond… And then she evolved into Amara Black, thrust into a world that wasn’t ready for the rise of another Dark Witch. But she was here all the same. Smut / Lemons. Harry Potter / DCU Crossover.
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Dahlia Potter was never one for hoping. She had learned, repeatedly, that getting your hopes up will only lead to painful reunion with the ground below. Then Hogwarts came along, and she was tempted down the halls of magic, family legacies and so much more. But even as second year is approaching, Dahlia uses every ounce of will power she possesses to keep her hopes from rising alongside the stakes
!!AUTHOR DOES NOT SUPPORT JK ROWLING AND HER VIEWS!!
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The Potter Girl (Rewrite and Repost) by SugarSkullDoll
Fandoms: Harry Potter - J. K. Rowling
24 Feb 2026
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Violet Potter is not the Girl Who Lived, but her brother is. All her life, she's just been that Potter girl and Hogwarts doesn't seem like it would change that unless she chooses her own path.
Or
Harry Potter has a twin in Slytherin, determined to be her own amoral self, while trying to protect her brother and not lose him in the process.
Rating and warnings for future chapters. Though nothing too graphic. Also future Snape/Violet Potter.
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Something is wrong in the wizarding world.
Harry feels it. Hermione knows it.
And Dumbledore... well, Dumbledore always knows more than he should. And probably had written a hundred and twenty pages plan about it.Buried secrets begin to stir, twisted truths surface, and an ancient magic awakens, hungry.
When the pieces on the board fall... one by one, no one is safe... not even those who thought they controlled the game.
And in the end, every path leads to one place: CHAOS, and thy name is Riddle.Disclaimer:
All characters and the Harry Potter universe belong to J.K. Rowling.
This is a non-profit fan work.I do not support or condone the original author's personal views.
This work celebrates diversity, inclusion, and the right of all people to exist as they are. -
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Root Fire (n.)
A fire that spreads underground, burning quietly through the roots of trees and shrubbery, often at a high temperatures. It can be brought back to surface when the ground is aggravated or it collapses.
Harry Potter had been left at the doorstep of Privet Drive number 5 the day Voldemort fell.
He had been told his parents died, that no one else wanted him... Yet the day before his eleventh birthday, a man showed up on the doorstep claiming to be James Potter, his long dead father.Harry hated them. From hate stems desire for revenge and right there is the start of the world shattering into pieces.
ADDITIONAL RELATIONSHIPS AND TAGS ADDED AS I GO
Series
- Part 2 of Tough As Dragon Scales
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Harry Potter has walked a thousand worlds, each a gauntlet of loss and fire, chasing a reality he’d tear existence apart to claim. He’s found the world he sought; now he battles to keep it.
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- Part 1 of Heart with Wings
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James immediately stood up and pulled Lily up with him. They moved towards their sons crib but to their surprise in it wasn't their son - not exactly.
In the crib they found two babies staring back at them. One with a scar and the other without.
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or: an AU where Voldemort put a little too much magic in his spell and it merges with Harry's. What in the world could possibly happen? In the Magical world apparently a lot.