1 - 20 of 1,777 Works in Harry Potter Has a Sibling
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When Harry Potter's abuse at the hands of the Dursley's reaches new heights, his volatile magic reaches its breaking point — unleashing devastating destruction upon the only home he's ever known. As his world delves into confusion and darkness, an unlikely family takes him in. A family who raise him to be decidedly different, to be considerably More, than anyone could expect.
When the time comes for him to rejoin wizarding society, the boy-who-lived never makes his highly anticipated reappearance. Instead a young girl, with a curious name, strikingly wild curls, and forlorn, cloudy green eyes, walks into the mess of deceit and layers of manipulation that have taken over the wizarding world.
Ara Dahlia Black leaves the entirety of known wizard-kind burning in hellfire in her wake.
Or
What if Lily Evans delved into darker arts than anyone expected of one of the shining Paragons of Light, and saved her son's life not with the power of Love, but with the desperation that can only be accomplished by sacrificing everything she is, or ever could be — and all in the name of the ever-watchful Powers-That-Be.
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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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A human. It was a real, living, breathing human. When was the last time he saw a human? It had to have been just before Earth’s destruction. Trillions—no, quintillions—of years had passed since Earth was consumed by the Sun, and yet here was a human, alive and well. A human, standing there before him under a soft, blue sky.
Earth. He was back on Earth.
The Master of Death couldn't help it. He laughed.
OR
Left in darkness at the end of time, the Master of Death had been waiting for Death to finally reap his old soul. That is, at least, until he fell through a black hole's event horizon and woke up in Petunia Dursley's garden.
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The Stark Singularity by Ria219
Fandoms: Harry Potter - J. K. Rowling, Iron Man (Movies), The Avengers (Marvel Movies)
24 Jan 2026
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Tony Stark loved James and Lily.
For one brilliant summer, they were his. And then they vanished—no explanation, no warning.
He thought they left him behind.
He thought he ruined it.
Years later, two brilliant, secretive teens crash into his life with sharp eyes, fake names, and a medical mystery Tony can’t ignore.
What he does know?
They’re his.
Born of magic and shaped by pain, Harry and Dorea have survived the worst of both worlds—wand and weapon. They’ve learned to hide in plain sight. But with Avalon stirring and old powers reawakening, hiding isn’t enough anymore.
The Wizarding World doesn’t know the Infinity Stones are real.
SHIELD doesn’t know Avalon ever existed.
And Tony Stark is about to discover that the most important thing he ever built… wasn’t a suit.
Series
- Part 1 of Singularities
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After the Battle of Hogwarts, Hari and her friends received an offer from the gods. They were told that magic was dying in their realm, and nothing could be done to fix it. However, another realm was facing a similar fate, but at an earlier point in its history. The group was given the chance to travel to this other realm and to its past, in order to establish a magical school. After agreeing, they journeyed to this new world, arriving in the year 1525.
In 1980, in the original realm, Lily and James Potter gave birth to twins. On Halloween one year later, the Potters survived an attack, but Dumbledore incorrectly proclaimed Oliver Potter the Boy Who Lived and convinced the Potters to disown Harry. Sirius, disagreeing with their decision, ended his friendship with the Potters, adopted Harry, and raised him as his own son.
When Harry Potter, now known as Hadrian Black, reached school age, he received an invitation to attend the Celestial Academy of Magic—the same school that Hari and her friends, as transmigrators, had founded centuries earlier in the new realm. While attending, he made friends, found love, and eventually formed his own Court.
Series
- Part 1 of A court forged in Starlight
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Harry Potter was the second son of the Potter's, a half-blood, and quite unremarkable. His older brother and younger sister were both admired lions, but he was the black sheep of the family, sorted into Slytherin and forgotten. He had no friends at Hogwarts, and his only ambition was to learn magic, so it was surprise to no one that he befriended a mysterious diary when it showed up in his luggage.
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[PODFIC] The wizard, the goddess and the philosopher's stone - By: Fantasticoncer by Fanfic_Snake for Fantasticoncer
Fandoms: Harry Potter - J. K. Rowling, Norse Religion & Lore
23 Jan 2026
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Harry Potter learns the truth during his first visit at Gringotts. Now, with his twin sister Helena, their father and several new friends, they have to survive their first year at Hogwarts and watch out for Dumbledore's schemes.
Series
- Part 1 of All By Fantasticoncer
- Language:
- English
- Words:
- 0
- Chapters:
- 1/1
- Hits:
- 100
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Harry and Willow Potter are desperate to return to Hogwarts, determined that this year will be better than last. They have each other, their friends, and none of the professors will be trying to murder them, so what could go wrong? Apparently everything. The mysterious Heir of Slytherin is attacking students and turning them into stone. With only a handful of clues as to who it might be, the twins must rely on each other and their friends to solve the mystery before the worst happens - a student dies and Hogwarts is shut down, forever.
This is the second book in a total rewrite of the Harry Potter series, imagining the world if Harry Potter had a twin sister! I've already completed Philosopher's Stone, so I highly recommend reading home is behind (the world ahead) before jumping into this.
Series
- Part 4 of The Children Who Lived
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Charlus Potter's Continuous Spiral by Hope_Moves_Forward
Fandoms: Harry Potter - J. K. Rowling
23 Jan 2026
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Charlus Potter returns home one Halloween Night to discover he is an orphan, and now a single child.
His home? Vanished, not even a trace of magic left in the aftermath.
His parents? Gone with the home, leaving their older son behind.
His brother Harry? It's as if he never even existed.But, in spite of that, the world keeps on turning endlessly. No matter what it is, trolls, resurrected dark lords, cults that worship Charlus' name, this spiral will continue, and Charlus can only hope he'll reach the end soon.
Book #1: Hermione Granger's Infinite Sadness [ongoing]
Book #2: R██ W██████'s Indivi███████ A█████████ [upcoming] -
The pirate's gold shadow by Goldthorn_Stormrose
Fandoms: Once Upon a Time (TV), Harry Potter - J. K. Rowling, Merlin (TV)
23 Jan 2026
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After waiting years for Lily and James to produce an hair Albus decides to "produce" one for them himself, and everything goes great until Harry is born and the siblings grow to destroy his plan together.
Series
- Part 1 of Golden shadow
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not a lot, just forever by peachesandcream (peachesand_cream)
Fandoms: Harry Potter - J. K. Rowling
23 Jan 2026
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Not once did Harry or Rosalie Potter ever think they were a part of the wizarding world, they didn’t even know it existed!
Their world is thrown completely on its side when one Rubeus Hagrid bursts down a door and tells them they’re different from their family, but the same as a lot of other people.
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When Sirius Black falls through the Veil, Harry Potter follows. Rather than death, he is greeted with a chance to start over fresh and live the life he always dreamed of: with a loving family and no scar on his forehead. But trouble always finds a way to disrupt Harry’s goals of peace. (A time-travel/AU fic.)
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Time breaks in quiet ways first.
A ritual misfires. A surviving Death Eater makes a very poor decision. An eighteen-year-old Auror who really should be sleeping is assigned to the case.
When a failed attempt to resurrect Voldemort fractures time itself, Harry Potter and Marigold Vale—an Unspeakable, a Seer, and a magical theorist with entirely the wrong earrings—are thrown backward into the Marauders’ era with no instructions, no exit plan, and far too much responsibility.
Armed with knowledge they shouldn’t have and wounds they haven’t healed, they attempt to fix a broken timeline without breaking themselves in the process. Along the way, Harry discovers family where he never expected it, love he was never meant to find, and a future that doesn’t require him to stand alone.
Time travel fix-it with consequences, snark, found family, and deeply questionable Ministry decisions.
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El sueño de Sirius Black by Fire_Storm-Ball (DarkLordWolf)
Fandoms: Harry Potter - J. K. Rowling
22 Jan 2026
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Básicamente, esta historia es un ¿qué habría pasado si…?: si Sirius nunca se hubiera acostado con Remus el 25 de diciembre de 1979 y, por lo tanto, jamás hubiera terminado su relación con Severus.
Series
- Part 3 of Las Crónicas de Castor Prince
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After the events of the triwizard tournament, Harry James Potter returns to number 4 privet drive filled to the brim with anger. it's no surprise it doesnt take long to snap. after a bloody fight with Vernon leaves harry with an even bigger scar than before, he packs his bag and flees without a word. Days on the run find him in the highlands of Scotland, not far from Hogwarts. It's there that he settles in an abandoned old house for the summer. it is there where he makes a new and unexpected friend, where he learns new skills, where he has realisations that change everything, and may just turn the war in a direction no-one expected. When Harry James Potter returns to Hogwarts for 5th year, he is not the same, and both Voldemort and Dumbledore have no idea what's coming for them.
DISCLAIMER: I do not agree with JKR or her views, however all these characters belong to her. I can only make them all as gay as possible to spite her.
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The Pandora Project by Lyradiorfeo (LyraDiOrfeo), wolfstarschild1980 (LyraDiOrfeo)
Fandoms: Harry Potter - J. K. Rowling
22 Jan 2026
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Two children vanish on the Spring Equinox of 1992.
Seven months later, on Samhain, an explosion tears open the earth and returns them—alive, broken and forever changed.Taken from the guardians who abandoned them and placed with the families who searched for them, the twins begin to heal.
But the truth waits beyond the veil. The night they were found was no accident, and Death itself has been watching ever since. -
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Adelaide ya no podía decir que era la hija del profesor de Pociones ni la amiga del niño que vivió. Después de todo lo que había descubierto en su segundo curso en Hogwarts, era imposible que en su vida aparecieran más desventajas…, ¿cierto?
Pero, en realidad, sí era posible. Porque cuando su tercer año en Hogwarts comienza y ella espera tener un curso tranquilo, común y corriente, el Torneo de los Tres Magos da inicio y el nombre de Harry Potter aparece en el Cáliz de Fuego. Y, por si fuera el colmo, el colegio entero parece flotar en una nube de amoríos de los que ella lucha por escapar…, ¿o no?
Una cosa tenía por seguro: seguía siendo igual de rebelde y prepotente que siempre, metiendo las narices donde nunca la llamaban. Pero eso sólo ocasionaba aventuras inolvidables que ahora recordaba con una sonrisa… Qué lástima que las cosas no siempre son como uno espera y una costumbre puede convertirse en un grave error.
Series
- Part 4 of Adelaide Snape (ESPAÑOL)
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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
22 Jan 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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The summer before Harry's 4th year another house elf appears in his aunt and uncle's house at number 4 Privet Drive giving him some news that will change his entire life. Follow Harry as he begins to discover and understand these changes as well as struggling through the newest challenges his 4th year at Hogwarts will provide.
(Bashing of AD/MW/RW/GW)
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Monty Potter sat at the edge of the Astronomy Tower, gazing up at the starry midnight sky that seemed to stretch endlessly. Looking at the closely entwined stars and constellations, Monty made a declaration. "I'm going to find him," he said to the empty space.
"By 'him', do you mean your missing twin? The one you've been tragically mourning?" a sarcastic voice answered from the black leather diary placed beside the Hogwarts student.
"Who else?" Monty twisted the fraying thread bracelet that snugly wrapped around his wrist. He never took it off, not since Harry went missing. Monty was certain his so-called uncle had done something to Harry, and he was determined to find out the truth. "We made a deal, Tom, and I expect you to fulfill it."
"I still can't believe you're not in Slytherin. But yes, why would I ever pass up the opportunity to take down Albus Dumbledore with his own pawn?" Tom replied. Pause. "You do know your twin might not be alive."
"Of course I know, Tom. I'm not stupid. I just want to tell him... something and bury him in peace."