1 - 20 of 1,772 Works in Harry Potter Has a Sibling
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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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After the downfall of the Dark Lord Voldemort, Rose Potter is proclaimed as the saviour of the Wizarding World and her sister, Ivy, is sent to live with her mother’s relatives for the greater good. Albus Dumbledore, so sure of his plans, doesn’t realise that Ivy is never taken in by the Dursleys, and is instead taken by a man from another time to a world of magic lost to History.
Ivy returns ten years later, raised by some of the greatest witches and wizards to ever live, trained in extensive magicks, and not the girl anyone expected, least of all Dumbledore himself.
Ivy Potter will take the world by storm.
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Follow Ivy through her time in the past and then through her first three years attending Hogwarts School of Witchcraft and Wizardry and getting to know the family that lost her. She knows magic lost to time, what she must do to restore the forgotten traditions that will shape the future of the world, and holds a powerful secret that no one can discover. Especially Rose.Will she make it out alive?
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Updates every other Friday between 18:00 and 22:00 GMT.
Series
- Part 1 of The Heir of Magic
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Too much trust can cause cracks in a relationship.
Too little trust can also cause cracks in a relationship.
And adding lying to the mix?
You might as well use a sledge hammer to shatter everything.
Series
- Part 7 of The Costume Series
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Before light bore a name,
before shadows found their form,
two presences were etched into the silence.The first shall walk without face or fate,
and its step shall make the boundaries of the world shudder.The second shall come in later ages,
born of a night where light and darkness brush against one another,
and by her mere existence, what once slept shall awaken.Neither heir nor child of chance,
she shall be what the living cannot comprehend
and what the dead cannot ignore.When her breath rises,
the prophets shall turn away their eyes,
unable to tell whether she heralds the end or the dawn.She shall not stand alone,
for the silence will recognize its echo,
and the shadows will whisper her name before it is ever spoken.When her power stirs,
the living shall tremble,
the ancients shall fall silent,
and the world itself shall fracture.Thus shall come the Second Presence,
foretold before words and before worlds,
and no being of flesh shall turn aside its course. -
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Magnolia Potter is the lesser known twin sister of the famous Harry Potter. Everyone knows about Harry but somehow on the day their parents were killed, memories of Magnolia vanished and things only get stranger when the twins get to Hogwarts. Will they find out why Magnolia was forgotten on that fateful night, why Voldemort let her live? Or will romance get in their way? DMxOCxGW
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Beauxbatons arrives at Hogwarts with a student who shouldn’t exist — or at least, shouldn’t look like Lily Potter. As the Triwizard Tournament tightens its grip, Harry finds himself drawn down a path set long before he was born, where choices feel less like freedom and more like inevitability.
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After the unfortunate events during the summer before Harry's third year, Harry ends up spending some time in Diagon Alley. When he ventures into Gringotts unaccompanied he learns many secrets about himself that he hadn't known before. Faced with questions about the true nature behind the light side of the war, and his own magic, Harry begins to question the motives and machinations of one Albus Percival Wulfric Brian Dumbledore.
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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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Harry Potter's younger sister is the local menace to society in Little Whinging before finding a letter for her brother in the post; after a long adventure ending at the house on the rock, she meets a giant who says she's allowed to go to a magical boarding school with Harry. After arriving at Hogwarts, she works as a Teacher's Assistant while taking stock of the castle and getting into more trouble.
A/N: Most relationships in the tags are background as of Philosophers Stone. This fic will be long and drawn out as it is my first, I'm not well at updating because I'm still in school but I'll try my best.
I don't in any way support JKR's views, if you do this is not your fic.
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Las crónicas de un padre desesperado by Fire_Storm-Ball (DarkLordWolf)
Fandoms: Harry Potter - J. K. Rowling
03 Jan 2026
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Cuando Severus Snape se convierte inesperadamente en padre de Harry, un bebé travieso con magia propia, su vida solitaria se transforma en un caos absoluto. Entre vecinos chismosos, emergencias mágicas y travesuras sin fin, Severus deberá aprender a sobrevivir a la paternidad… y quizás, descubrir que incluso el hombre más cínico puede encontrar ternura en medio del desorden.
Series
- Part 1 of Las Crónicas de Castor Prince
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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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Everyone knows the story of the Boy Who Lived. They know about the night Voldemort fell, the sacrifice of Lily Potter, and the scar that changed the wizarding world forever.
But history is written by the survivors, and some secrets are buried deeper than graves.
On that fateful Halloween night in Godric’s Hollow, there wasn't just one in the nursery. There was a girl-Harry’s twin, born from a dark anomaly that even the Potters couldn't fully comprehend. While the name ''Rose Potter'' is written on a tiny grave, a new identity started to grow in the dungeons.
Now, in fourth year at Hogwarts, as the Triwizard Tournament starts, Adhara Snape lives as the cold daughter of the Potion’s Master. She hates Harry Potter and everything he stands for. Yet, every time their eyes meet, she hears a haunting scream and sees a flash of green light that doesn't belong to her memories.
They shared a womb. They shared a night of tragedy. And soon, they will learn they shared a prophecy. -
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Albus Dumbledore, plagued by the memories of another orphan boy decades ago, decides to pay the famous Boy Who Lived a visit after a concerning letter from Arabella Figg, and it changes everything.
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The Stark Singularity by Ria219
Fandoms: Harry Potter - J. K. Rowling, Iron Man (Movies), The Avengers (Marvel Movies)
02 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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“You’re clinging to a corpse, Violet,” Draco said softly. “The Order’s dying and here you are, still bleeding in the dark for a side that doesn’t even realise you exist. How many more pieces of yourself are you willing to give before there’s nothing left?”
“I have no other choice but to fight, Draco.”
The wind tugged at his cloak, still draped over her shoulders. It smelt like him, clove and firewhisky.
“You never did know when to walk away from a lost cause.” He sighed. “Not then. Not now.”
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Violet Potter couldn’t be more different from her famous brother. Scarred by cruelty at the Dursleys, she learned early that survival had a cost.
Three years after Dumbledore’s death, the Order of the Phoenix is crumbling. To most, she’s just the potions master, hidden in Grimmauld Place. To Mad-Eye, she’s the order’s most valuable weapon.
When a mission goes wrong and she is captured, with a dragon egg in her grasp, Violet is forced into a blood bond with the Dark Watcher, Voldemort’s feared enforcer. Caught in a web of propaganda and lies, Violet must decide who she’s willing to become. She was never meant to be a hero and heroes don’t survive this war… monsters do🕷️
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Familiar Blood I Hold Alone by lucky_katebishop
Fandoms: Harry Potter - J. K. Rowling, Marvel Cinematic Universe
02 Jan 2026
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“I don’t understand,” Harry said as he looked at the parchment laying on the table in front of him. An intricate and ancient looking dagger sat beside it, the hilt’s gems glinting in the candlelight. A speck of blood rested on the tip of the metal and Harry wanted to wipe it away to hide the evidence of the great betrayal that was revealed to him in only a few words.
Maybe if he hadn’t stolen a dragon right out of the goblins' noses less than a week before, Griphook would be more understanding. Maybe if Harry actually had any business being in this bank right now, Griphook wouldn’t look at him like he was complete and utter dirt. But Harry didn’t have business with Gringotts. Because he didn’t have a fortune or a family will. Because James Potter was not his father. No, that was reserved for one Anthony Stark.
// Wrong boy who lived AU in which Harry is Tony Stark's biological son. He needs cash fast so what does he do? He flies to New York to swindle Iron Man!
Series
- Part 2 of FTGG AUs
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If James and Lily had given birth to twins, the older brother, Anders Potter, was treated as The-Boy-Who-Lived. While Harry Potter, the real The-Boy-Who-Lived, Voldemort's Horcrux, and Anders's little brother, is ignored by all. What will happen to his character when he is sent to live with the Dursleys, only to be abused by them? Will he still be as innocent and sweet as he was as a child?
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English is not my native language. If there are any mistakes, please let me know in the comment. -
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When Fred Weasley is called to a college party to assist his younger brother with his beat-up car, he does not expect to find a fallen angel ruining the tires of a nice Nissan Sentra.
Or Elliot is seeking revenge on his ex-boyfriend on Halloween, and Fred falls in love with the petty, pretty boy wearing fake wings and a crooked halo.
Series
- Part 4 of LOST AND FOUND
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Hadrian potter is not the only potter child, he's a twin! After voldemort comes in trying to get rid of the child prophesied to defeat him and it doesn't go as planned, it's believed Hadrian potter's twin is the one who defeated the dark lord. Hadrian is given to the Dursleys to be raised, after he gets his letter to hogwarts he learns about what really happened the night he was given to the dursleys.
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The Hogwarts years are rewritten and the Battle of Hogwarts never comes. The war drags on into adulthood, leaving the wizarding world fractured and afraid.
Draco Snape, son of Severus and heir to secrets no one else knows, was raised in isolation and trained from childhood to replace his father as the Order’s hidden weapon. He is a master of potions, legilimency, and spycraft, surviving in the Dark Lord’s inner circle while feeding intelligence to the resistance.
When the Dark Lord discovers his betrayal, Draco's escape route hurls him straight into Grimmauld Place and into the hands of the very people he has spent years protecting from afar. With Snape’s memories stitched together in a single vial, long buried truths threaten to rewrite everything the Order believes about him and about the war itself.
The world is burning. The Order is breaking. What remains may depend on who Draco Snape chooses to become and who dares to believe in him.