30 Best Harry Potter Costume Ideas That Will Make You Want to Binge the Movies

For most people, Halloween is a time for candy and costume parties. For Potterheads, it's the one day – well, fine a full week – a year that you can pull off dressing up like your favorite Harry Potter character and not get weird looks from strangers on the street.

Now, you've probably already dressed as Harry, Ron, and/or Hermione for at least one Halloween celebration, so it's time to really up your fandom game. As a lifelong Potterhead and Seventeen's official HP expert, I am uniquely qualified to help you on this magical Halloween-related journey.

So, to help you pick out a killer DIY costume (and partially because I just really like falling into nerd wormholes) I sifted through a bunch of Halloween hashtags to find the most unique, obscure Harry Potter costume ideas only die-hard fans will get.

Ahead, epic costumes inspired by the best characters, Patronuses, fantastic beasts, ghosts from the movies and books.

Hermione (Post-Polyjuice Potion)

Recreate one of the most iconic moments in Harry Potter history: the time Hermione drank Polyjuice Potion and accidentally turned into a cat.

What you'll need: Wolf Ear Headband, $10 SHOP NOW

Peter Pettigrew

If you're trying to channel a creepy vibe this Halloween, go as the wizarding world's creepiest resident: Peter Pettigrew. He makes for a pretty terrifying costume.

What you'll need: Gray Mouse Tail, $7 SHOP NOW

Lavender Brown

Pay tribute to the most annoying character in Harry Potter history (you know it's true) with ringlet curls and a pastel bandana.

What you'll need: Bandana, $7 SHOP NOW

The Marauders

Messrs Moony, Wormtail, Padfoot, and Prongs are proud to present: your Halloween costume. All you need a classic Hogwarts robe to pull this group costume off.

What you'll need: Harry Potter Deluxe Costume, $37 SHOP NOW

The Golden Snitch

Speaking from experience, (yep, that's me!) no one will get this costume. But your Instagram followers will love it.

What you'll need: Gold Angel Wings, $19 SHOP NOW

Madame Maxime

If your Halloween costume requirements include the phrase "badass," Madam Maxime is a solid choice.

What you'll need: Sequin Maxi Dress, $51 SHOP NOW

Fleur Delacour and Victor Krum

If you're looking for a four-person group 'stume with a little added wizarding flare, add Harry Potter and Cedric Diggory (RIP, luv u) to this costume idea.

What you'll need: A-Line Skirt, $21 SHOP NOW

A Howler

"RONALD WEASLEY, HOW DARE YOU STEAL THAT CAR –", yep, this will be you on Halloween dressed up at Mrs. Weasley's howler (or, for book fans, Dumbledore's howler).

What you'll need: Black Mary Janes, $34 SHOP NOW

Professor Quirrell

You're one purple sweater and a head wrap away from being Voldemort's most trusted ally. Turn this into a two-person costume, by dressing your bff up as the Dark Lord himself.

What you'll need: Purple Scarf, $10 SHOP NOW

Mandrake

The Mandrake's cry is fatal to anyone who hears it, which makes it the perfect spooky Halloween costume.

What you'll need: Artificial Ivy Leaves, $14 SHOP NOW

Boggart Snape

Remember when Neville went up against a boggart and his greatest fear (Snape) stepped out of the wardrobe dressed in his grandmother's clothes? Well, it makes for a pretty epic costume idea.

What you'll need: Stuffed Vulture, $20 SHOP NOW

The Trolley Witch

This DIY costume comes with snacks included. Honestly, what more could you ask for?

What you'll need: Chocolate Frog, $14 SHOP NOW

Voldemort, Tonks, Professor Umbridge

Any of these essential HP characters would make for a fantastic Halloween costume idea.

What you'll need: Stuffed Python, $40 SHOP NOW

Nearly Headless Nick, Severus Snape, Professor Quirrell, Neville Longbottom

One trip to dad's closet and a little fake blood is all you need to recreate Neville's iconic Battle of Hogwarts look. This picture is just packed full of good ideas.

What you'll need: Sword, $12 SHOP NOW

Rowena and Helena Ravenclaw

Reuse last year's prom dress for an epic recreation of the Grey Lady.

What you'll need: Long Sleeve Dress, $28 SHOP NOW

The Weasley Family

Red hair and a hand-knitted sweater? You must be a Weasley.

What you'll need: Personalized Sweater, $71 SHOP NOW

Dementor

If you're feeling really lazy, a black sheet with two holes cut in it will due just fine.

What you'll need: Black Hooded Robe, $13 SHOP NOW

Ginny Weasley

Rep the baddest Weasley of them all in Gryffindor House Quidditch robes.

What you'll need: Quidditch Goggles, $13 SHOP NOW

Moaning Myrtle

Just throw a toilet seat around your neck and scream at everyone the whole night. Sounds like fun, amiright?!

What you'll need: Ravenclaw House Robe, $48 SHOP NOW

Dobby, Hedwig, and Crookshanks

[instagram ]https://instagram.com/p/xr-NaagxsN/&hidecaption=true[/instagram]

Some of the best characters in the series didn’t even speak a word, but we still loved them anyway – except for Scabbers. Eff you, Scabbers.

What you'll need: White Feathers, $7 SHOP NOW

Cat Ears, $9, SHOP NOW

Rita Skeeter

[instagram ]https://www.instagram.com/p/BLY3LemBT_5/&hidecaption=true[/instagram]

Puncture any reputation with your trusty Quick Quotes Quill.

What you'll need: Glasses, $9 SHOP NOW

Feather Boa, $15 SHOP NOW

A Patronus

Be your own protector against Dementors with this adorable costume.

What you'll need: Silver Lipstick, $20 SHOP NOW

Antlers, $16 SHOP NOW

Tonks

Just make sure no one calls you Nymphadora in this outfit.

What you'll need: Pig Nose, $4, SHOP NOW

Professor Trelawney

You may not be a Seer, but Professor Trelawney isn't either, so you're fine.

What you'll need: Glasses, $4, SHOP NOW

Fabric Head Scarf, $11, SHOP NOW

Luna Lovegood

Keep an eye out for Wrackspurts this Halloween, dressed as everyone's favorite Ravenclaw.

What you'll need: Spectrespecs, $10, SHOP NOW

Quibbler, $35, SHOP NOW

Wand, $33, SHOP NOW

Fawks the Phoenix

[instagram ]https://instagram.com/p/7Ts4VtKIGS/&hidecaption=true[/instagram]

Fawks is number two on a very long list of people who have saved Harry Potter's life (Hermione being number one, obvs). Rep him on Halloween with a fiery costume all your own.

What you'll need: Red Feathers, $9, SHOP NOW

Red Tulle, $9, SHOP NOW

Orange Tulle, $8, SHOP NOW

Dobby and Harry Potter

[instagram ]https://www.instagram.com/p/9hsOrfnaaM/&hidecaption=true[/instagram]

Thanks to Harry, Dobby is now a free elf.

What you'll need: Elf Ears, $7, SHOP NOW

Gryffindor Tie, $6, SHOP NOW

Harry, Ron, and Hermione

Okay, so this may not be the most obscure HP-inspired costume, but that doesn't take away the fact that it's simply iconic. Grab your best friends and go as your favorite Gryffindors.

What you'll need: Hogwarts color block crewneck, $49 SHOP NOW

Bellatrix Lestrange

If you're looking to dress as this Pure Blood, it's time to tease your hair and practice your crazy eyes. Don't forget your wand!

What you'll need: Long sleeve V-neck maxi dress, $35 SHOP NOW

Rep your house

One of the best parts of the Harry Potter universe is the different Hogwarts houses. Whether you're brave like a Gryffindor or a Hufflepuff at heart, throw on the colors of your house's seal for a simple costume.

What you'll need: Hogwarts robe, $41 SHOP NOW

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