Twilight has has a ton of love in the fanfic department for obvious reasons. Have another 32 awesome stories to read in her honor! If your favorite isn't in here, it might have been in a previous year. Start at last year's post and go down the rabbit hole!
And thanks again to Whisper Key for scouting them out for us!
Go read Twilight stuff below.
Slice of Life
Endless Forms Most Beautiful by Undome Tinwe
https://www.fimfiction.net/
In the distant future, Princess Twilight Sparkle and Spike enjoy Hearth's Warming with an old friend.
Tell My Wife I Said "Hello!" by Silent Whisper
https://www.fimfiction.net/
Being kidnapped is the least of Twilight's concerns.
Thy Words... by Lady Grey
https://www.fimfiction.net/
Dear Princess Dear
Celestia,
Today I learned that sometimes how you say something can be just as important as what you have to say. It's easy to forget the true strength of words and all the subtle ways they can bring us closer together or push us apart. It doesn't matter if you're a filly in Ponyville or an Alicorn Princess in Canterlot, words are powerful.
There's still so much to learn about friendship. But I think I'm ready to start.
Your Faithful Student,
Your Friend,
Twilight Sparkle
All Good Things by Coronet the lesser
https://www.fimfiction.net/
Princess Twilight Sparkle has overseen peace and prosperity throughout Equestria for as long as ponies can remember. During a quiet evening, Twilight tells the tale of her many adventures to her latest student and how she remembers her friends long passed.
But she can't tarry too long, for she has a long-overdue meeting to attend.
Comedy
Progress by DrakeyC
https://www.fimfiction.net/
Twilight comes up with an idea to revolutionize Equestrian society.
Equestrian society does not approve of her idea.
Twilight Opens a Door by Golden Tassel
https://www.fimfiction.net/
Twilight Sparkle is very organized. She has it down to a science.
"A place for everything, and every thing in its place" are words to live by.
It's a completely normal day in Ponyville, and Twilight Sparkle has absolutely nothing to worry about.
This is, of course, a serious problem.
Lavender Screen of Death by Irrespective
https://www.fimfiction.net/
Your Twilight Sparkle ran into a problem and needs to restart. We’re just collecting some error info, and then we’ll restart for you.
Her Lips Tasted Like Cherry Cola by MagnetBolt
https://www.fimfiction.net/
Fizzlepop Berrytwist was a little girl, and Twilight Sparkle's best friend. Her death left Twilight traumatized.
Fizzlepop Berrytwist was a little foal, with a bright future ahead of her. Her trauma gave birth to Tempest Shadow.
When someone is gone, it's the duty of the ones left behind to remember them, and to avenge them.
War in the Pocket by King of Beggars
https://www.fimfiction.net/
An ancient race of warriors was sealed away by the princesses long ago. After countless generations of peace, they rise once again to wage war with the newest of Equestria's princesses: Twilight Sparkle.
A story about revenge, love, cookies, mecha, and bipeds.
What is the dark secret the alicorn sisters are hiding? What's with the new baker at Sugarcube Corner? What exactly are squatter's rights? Can two crazy kids find each other through the smoke and the fog of a battlefield? And why is Celestia so horny?
This is the story of siege of the Ponyville Library: The War in the Pocket.
Love Countdown by Glimglam
https://www.fimfiction.net/
Twilight has always wondered what it was like to be in love. Madly in love. She might just get the answer she desires in the form of the Love Countdown; a spell that, for one hour, sets the caster in a state of hopeless infatuation towards the first pony she sees.
But what she didn't read, was that the Countdown isn't specific to just one pony...
Sad/Dark
The First Edict by The Red Parade
https://www.fimfiction.net/
I, Princess Twilight Sparkle of Equestria, do hereby sign the Equestrian Heritage Act, approving its clauses and motions, effective immediately.
Good Intentions by Just Horsing Around
https://www.fimfiction.net/
When things start to go missing around Ponyville, suspicion quickly falls on the two new ponies in town.
Twilight Sparkle, however, knows better. This isn't just somepony with sticky hooves, but possibly the start of something much worse. Sworn to secrecy by the princesses and with only her friends to help her, Twilight must unravel the mystery before the angry villagers take matters into their own hooves - and before it ends in tragedy.
For Princess Celestia has revealed a chilling state secret; something has been hunting ponies across Equestria for centuries. And now, it may be hungry again.
From Endless Snow... by Between Lines
https://www.fimfiction.net/
For years, I have waited.
I have watched the skies, ever clouded by the windigos since the time of Platinum the Traitor.
At long last, with the coming of the one called Twilight Sparkle, I will set the world right.
Those Weaker Ripples by Seer
https://www.fimfiction.net/
Twilight is taking tea, just like she used to with the princess. She's the princess' faithful student actually. Did you know that?
Stained Glass by Palm Palette
https://www.fimfiction.net/
Twilight is a young crystal pony who has a serious problem. Unlike the other ponies whose coats are brilliant and translucent, Twilight is bland and dull.
The upcoming Crystal Heart ceremony is her last chance to shine. She'd better not fail, because if she does...
Well, let's just say that there's a reason why ponies like her disappear.
Returning Home by garatheauthor
https://www.fimfiction.net/
Centuries ago an apocalypse ravaged Equestria, scorching the lands, boiling the seas, and burning away the air. In that fateful moment, the embers of life were snuffed and the planet left a husk.
However, I survived, immune to the desolate environment I was unfortunate enough to inhabit. With nothing left to do, I began to walk, scouring what remains of Equestria in search of anything to give my life meaning.
It was only a matter of time before I returned to Ponyville.
Not an Adult by Sapidus3
https://www.fimfiction.net/
Twilight Sparkle has been living a lie. Everypony told her what a beautiful and accomplished mare she was. Everypony thought she was a responsible adult. They were wrong. She was still just a filly trying to stumble her way through life.
The Element of Surprise by Trick Question
https://www.fimfiction.net/
After a tragic accident claims the lives of Fluttershy and Big Macintosh, Twilight Sparkle begins to grow distant from her remaining friends. She locks herself in her castle and spends her life working on a cure for aging in the hopes her remaining friends can be saved.
Meanwhile, Pinkie Pie comes up with an idea for the best surprise ever. For three years she works in secret on a surprise for Twilight Sparkle. But Twilight's gift won't be revealed until the last of her friends has passed away.
What kind of surprise could possibly make up for the loss of your best friends?
Shipping
Amo Ergo Sum by DrakeyC
https://www.fimfiction.net/
By the year 2238, two-thirds of humanity have become "ponies', living in an online virtual reality paradise where everything they could ask for is theirs to have at a moment's notice. It is a world of freedom, where all biological needs are eliminated and you can live forever doing whatever it is that pleases you.
But for some, Equestria can seem less a paradise and more a prison, an artificial and manufactured place where nothing is real and everything is a simulated lie to make you feel comfortable. Perhaps, even the feelings of the mare sitting next to you holding your hoof. How could you ever be sure even your own feelings are truly yours if you're just a program stored on a server?
Does living in Equestria mean Twilight Sparkle has to choose between her heart and her soul?
The Clarity of Darkness by Trick Question
https://www.fimfiction.net/
Applejack and Twilight Sparkle are on a mission in the deep sky, far from the comforting ground of Equestria, when disaster strikes. Together the two ponies fall into something from which there is no escape.
On an unrelated note, this story features a black hole.
Simulations by Monochromatic
https://www.fimfiction.net/
Twilight Sparkle regrets botching her romantic confession to Rarity. As a joke, Rarity proposes a simple and elegant solution: break up and try it again.
She just wasn't prepared for Twilight to agree to it.
In and Out of Phase by Grand_Moff_Pony
https://www.fimfiction.net/
They say a life remembered is a life well-lived, and Twilight and I lived a very good life. But when there's more years behind you than there are in front, memories are all you have. Lose those and what do you have left?
That I can answer that question at all breaks my heart all over again.
Inferno by DrakeyC
https://www.fimfiction.net/
Twilight won't settle for anything less than a perfect gift for her girlfriend.
They have very different ideas about what that entails.
Cool Jazz by Owlor
https://www.fimfiction.net/
Twilight Sparkle, like many progressively minded ponies, is drawn to the newly emerging equestrian jazz scene, where she's seduced by the music and the atmosphere. But as a mare more at home in a library than among ponies, she's not exactly well-equipped to deal with the finer point of social interaction in this environment.
Crimson Lips by Monochromatic
https://www.fimfiction.net/
Amidst the beautiful and unforgiving city of Canterlot, where prejudice is rampant and passion even more so, two women forge an unlikely bond and explore the answer to a simple question: is selling your body the same as selling yourself?
Drama
A Bottle of Red by AFanaticRabbit
https://www.fimfiction.net/
It started with doubt, and despite their struggles and best efforts, Twilight and Rarity were forced to make a difficult decision. Months later, they have to confront the fallout, and maybe rebuild bridges that were broken.
The Alicorn Problem by TheTimeSword
https://www.fimfiction.net/
The Society of Secret Sorcery. A domain of magic bent on helping Equestria in the shadows, or so its members believe. After causing terror in several cities, Twilight Sparkle takes charge in finding the culprits. The good news is Twilight doesn't have to deal with the society alone. Moondancer and Sunset Shimmer, one a former member, the other an infiltrator, are more than willing to help. Working together, they must find out the identity of the mysterious leader and put an end to the society.
Familiar by Trick Question
https://www.fimfiction.net/
Twilight Sparkle is a creature of habit. To her, perfection is found in the familiar: best friends, comfort food, and wholesome, everyday fun.
Unfortunately, even the simplest equation has unexpected perturbations. Can Twilight ever regain the lost familiarity of her daily routine?
Adventure
The Distant Princess by GMBlackjack
https://www.fimfiction.net/
The world saw the purple comet, and very few knew what it was. Twilight Sparkle was one of those who had no idea, so she decided she was going on a trip to get some answers. With her friends at her side, she sets her sights on the Candy Kingdom, believing she is prepared for anything.
But evil brews in the Candy Kingdom, and she is far from the only individual to have seen the comet. Ancient secrets are about to be unearthed and mysteries from very distant lands will rear their ugly heads. Meanwhile, a ragtag group of misfits is going to go on an adventure. Because what else do you do in a world like this?
Seven separate cartoon worlds have been fused together into one to create this story.
Twilight Sparkle and the Master Thief by DungeonMiner
https://www.fimfiction.net/
On a peaceful night, High Princess Twilight Sparkle discovers a thief in her quarters, and while dealing with him, discovers that he is actually in her employ. She insists that he has no place in her Kingdom, and the thief, Night Silk, disagrees. Now, with his job on the line, Night strives to prove that he is exactly who she needs to work the underworld.
After all, he's not just a thief.
He is a Master Thief.
Here Comes the Rain Again by A Hoof-ful of Dust
https://www.fimfiction.net/
Her coronation over, Twilight has some doubts about stepping into the horseshoes of a princess. Little does she know a greater challenge is rushing to meet her, building like a storm on the horizon, bringing with it an endless night.
Majija: Under the Weather by Plonq
https://www.fimfiction.net/
When a strange, unexpected storm settles over Ponyville, Twillight Sparkle investigates. She discovers that not only is the storm the fault of the weather ponies, but only the weakest flyer in Ponyville can stop it.