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Harry Potter and the Prisoner of Time by HarmonyOfTheSpheres
Fandoms: Harry Potter - J. K. Rowling, Merlin (TV)
11 Jul 2025
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Merlin has returned to Hogwarts for his second year as the History of Magic professor, and this time he is determined to find a way to destroy the horcrux within Harry before it's too late. It's not exactly a simple task, however, especially with an escaped convict on the loose and dementors lurking around Hogwarts' grounds. So when Merlin finally gets a chance to change Harry's fate, he takes it.
A bit of time travel is surely worth the risk if it will save Harry's life—isn't it?
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- Part 2 of Secrets of Emrys
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In which Arthur and Merlin are soulmates.
In which Prince Arthur Pendragon of the British Monarchy and Magical History Professor Merlin Ambrosius of Avalon University are soulmates.
In which an overzealous fan causes the reveal of Prince Arthur's soulmark, and a different overzealous fan recognizes the soulmark of his pseudo mentor/professor.
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Merlin's curse lasts into the modern age, and the Goddess still won't let him see peace. Merlin returns to Ealdor and works at the local university, final settling into his new life. And then the Goddess decides to fuck his life up all over again.
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Where a Lot of People Team Up and Try to Destroy One Another (A BBC Merlin and Harry Potter crossover) by StupefymeWholly
Fandoms: Merlin (TV), Harry Potter - J. K. Rowling
08 Jun 2025
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Just months after the fall of Voldemort, as the magical world struggles to heal, Merlin receives a letter from Hecate bearing a prophecy — one that speaks of the return of long-lost friends... and long-forgotten enemies.
He and Leon race back to England and quietly join the Hogwarts faculty under the Headmistress’s protection, waiting for Samhain, when the veil will thin and the lake of Avalon will stir. Arthur and his knights are fated to rise again — but so is a darkness that once tore their world apart.
Old allies must forge new swords with dragonfire. Morgana must choose between blood and redemption. And across the shadowed moors, a sister threatens to raise an army of the dead.
As magic’s fate teeters on the edge, the line between kin and foe blurs once more.
The once and future king returns — but will the world survive this war? -
One More Time by orphan_account
Fandoms: Harry Potter - J. K. Rowling, Merlin (TV), Percy Jackson and the Olympians - Rick Riordan
07 Jun 2025
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Merlin and Leon have been off the grid, researching rare herbs across the Atlantic—until a cryptic prophecy from Hecate sends them rushing back to England. Hogwarts is still recovering from the scars of war, but some things never rest. As Arthur and his knights return from Avalon’s depths at Samhain, old friends and foes alike find themselves caught in a web of magic, dragons, and destinies rewritten. Morgana’s making unexpected choices, while Maurelle summons shadows best left alone. With swords reforged by dragonfire, and an army rising from the dead, can they face what’s coming… one more time?
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Of Bards and Dragon Tales by saturnAlphenn
Fandoms: Merlin (TV), Harry Potter - J. K. Rowling
02 Jun 2025
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Merlin is bored - being on earth for 1500 years does, apparently, come with it's problems. So, naturally, he applies for a teaching position at Hogwarts, only to be absorbed into the chaos that's got the boy with the lightning scar's face plastered all over it.
Oh, and there’s a dragon. A suspiciously human-shaped dragon.
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How you came to be. by Doctor_JohnEmrys
Fandoms: Merlin (TV), Harry Potter - J. K. Rowling
30 Apr 2025
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The story of how Methur became the favourite professor at Hogwarts.
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Merlin and the Last Truth by mysticxy
Fandoms: Harry Potter - J. K. Rowling, Merlin (TV)
12 Apr 2025
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With Voldemort now back and poised to return Morgana to the land of the living, Merlin has much to prepare for what is to come, especially in regards to Harry, the one who seemed to be the person who could fulfill Merlin's hopes of making the world a better place. However, unbeknownst to Merlin, the Prophecy of the Once and Future King is not what it seems, a secret only known to Kilgharrah, but he has other things to concern himself about, especially as the Ministry is divided between supporters of Voldemort and the side of the Order of Phoenix. As things escalate, truths shall be revealed, both to the Wizarding World AND to Merlin.
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Merlin and Regulus have a talk and Merlin remembers some people.
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It was time to go home, if home was still there. It was time for Merlin to go back to Hogwarts.
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When a pair of hands silently wrapped around his chest from behind, the young History of Magic professor merely chuckled softly and grumbled. "As the Head of Gryffindor, does it seem like a good idea to break curfew and wander the castle late at night?"
Soon, another mouth covered his, Merlin closed his eyes, slowly savoring the kiss, infused with the mist of Hogwarts at midnight, the sweet aroma of butterbeer from Hogsmeade, and the passion of sweat and adrenaline from the Quidditch pitch.
"Predecessor," the Gryffindor head—well, predecessor—let go of his mouth and playfully bit Merlin's earlobe, "I've graduated, you're getting old and confused, professor." He deliberately emphasized the word 'old.'
"Prat." Merlin pulled away until he could look Arthur fully in the face, "thought you weren't coming tonight. Big star."
Series
- Part 14 of Merthur fic
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Where a Lot of People Team Up and Try to Destroy One Another (A BBC Merlin and Harry Potter crossover) by orphan_account
Fandoms: Merlin (TV), Harry Potter - J. K. Rowling
03 Aug 2024
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Merlin and Leon have been living a peaceful life through out their years of waiting for their King to come back. They liked to go and travel to different countries. A strange encounter with two parrots in a zoo in NYC started a chain reaction to shocking and troublesome events. Meanwhile, after four years of rebuilding, Hogwarts is finally deemed strong enough to house students once again, and to let the past 7th Years continue their education. Although this peaceful time will be interrupted soon, as a growing danger threatens Magical and Muggle Britain. It is up to our chosen ones, their family, and friends to save the world (once again). Join in on their journey? Check the opening notes down below.
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merlin and arthur meet at a burlesque club. but its not the first time they've met.
theyve been secretly dating for a few years now.
a fic wherein merlin and arthur are secretly dating and merlin is accidentally dragged to one of his shows. chaos and love and fluff ensues.
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What if Merlin was best friends with the Marauders but left for an internship just after school ended. What happens when he returns years later and learns what happened to his friends while he was gone.
This is my first fic so it might be a little choppy. For some context all 5 seasons of Merlin are canon in this and this takes place while Merlin is waiting for Arthur to rise from the lake of Avalon. Books one and two of Harry Potter are the same and the story starts off just before book three. -
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What is life, if not to love? And what is love, if not pain?
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Fanfic for the Merlin Tarot fest. I pulled an all nighter for this, y'all better like it -
One Hundred Forty-Three Point Five Degrees by thesongistheriver for TyanataDraven, GuiltyScarl3t, Tari_Sue, LikeAPaperPlane, Cithara, PapySanzo, MayaPleiades
Fandoms: Merlin (TV)
17 Apr 2024
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"You've got to be fucking kidding me," Merlin all but shouted, throwing his satchel onto the desk and glaring at the equation string stretching across the entire whiteboard. "Again?"
“Professor Emrys, sir?" Drea raised her hand tentatively. "Could it be that, well, maybe Professor Pendragon is trying to send you a message?"
"Yeah, a message that he's a complete git," Merlin muttered.
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Literature professor Merlin Emrys absolutely loathes arrogant, condescending Arthur Pendragon, professor of applied mathematics, who claims maths is a universal language ... and lectures right before him in the same hall, always leaving the board a mess.
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Harry Potter and the Secrets of Emrys by HarmonyOfTheSpheres
Fandoms: Harry Potter - J. K. Rowling, Merlin (TV)
10 Mar 2024
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Merlin generally does his best to stay out of magical affairs, or at least, he likes to think he does. But after one chance encounter in Diagon Alley, a seemly incompetent new Defence Against the Dark Arts teacher, and a fight in a bookstore, Merlin finds himself starting a new position as the History of Magic professor at Hogwarts. Unfortunately, he also finds himself under heavy suspicion from both Harry and his friends and members of Hogwarts's staff when the Chamber of Secrets is mysteriously opened once again.
Series
- Part 1 of Secrets of Emrys
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Merlin's been around for a long time. He's been a lot of places, and he's been a lot of people. He's kept an eye on the world, and as magic hid itself, he kept an eye on both worlds, allowing Magic itself to help guide him where he was needed. A few years ago, something pushed him to return to a name and life in he'd established in Britian's Magical Society, and acquire a teaching position at Hogwarts. Now, the ever famous Harry Potter is about to start attending, and as events unfold, Merlin gets the feeling Harry's story is why he was pushed to teach, not the latest reincarnations of his first life.
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Merlin has been around a long time, to pass the time he decides to pick up teaching. As he refuses to teach 'legend' of Arthurian times, he founds Hilda's University and the city Lower Town that grows around it. So, as he waits for Arthur, he teaches... and as Kilgharrah waits he sets Merlin's clothes on fire, preferably when he's wearing them.
Loose connection of scenes, not a traditional story set up
Series
- Part 2 of Meowmix's Merlin Stories