The Most Popular Halloween Costumes of 2026: Trending & Classic Picks

Each fall Google publishes its list of top-trending Halloween costume searches — the looks rising fastest in the weeks before October 31. The 2026 list is a mix of brand-new pop culture, viral internet characters, and the evergreen classics that never go out of style.

We combined Google's trending data with the costumes that reliably top retail best-seller lists every year (witches, vampires, skeletons, superheroes) so you can pick something on-trend or something timeless — or both.

1. Buddy the Unicorn — The cheerful-but-nightmarish mascot from the 2026 horror film Buddy tops the list. A rainbow unicorn onesie with oversized shoes and an unsettling grin is the base — the costume's charm is in the performance.

2. NeeDoh — The viral squishy stress toy became a costume in 2026. Think bright, bulbous, rounded shapes in candy colors: a rounded tunic, tights, and a matching beanie. It's playful, comfortable, and instantly recognizable to anyone under 16.

3. Nikki from Obsession — The obsessive love interest from the breakout horror hit. The look is deceptively ordinary — a specific sweater, a specific hairstyle, an unsettlingly intense stare — which is what makes it so good for a last-minute group costume.

4. Agamemnon from The Odyssey — Christopher Nolan's Greek epic sent ancient armor back into fashion. A draped tunic, a breastplate (cardboard or craft foam), a sculpted cape, and a helmet or crown of leaves makes a dramatic, photogenic costume.

5. Carl from Dungeon Crawler Carl — A former Coast Guard and his cat Princess Donut navigating a deadly game. Cargo pants, a tool belt, a cat-eared companion, and a knowing smirk carry this cult-hit look.

6. Oliver Tree — The musician's signature bowl cut, oversized sunglasses, and deliberately eccentric layered clothing make a costume that's mostly attitude and thrift-store layering.

7. Disco Scooby-Doo — Scooby pairs with Shaggy for a top couples costume. A brown onesie with a spotted back, a green tee, and a collar tag is the base; add a Shaggy in bell-bottoms and a green tee.

8. Witch — The all-time #1. A pointed hat, black dress, broom, and green or purple accent makeup. Endlessly riffable: cottage-core witch, gothic witch, glam witch.

9. Dinosaur — An inflatable or plush dinosaur suit is a guaranteed laugh and a top seller every October. T-Rex inflatables especially.

10. Harley Quinn — Baseball bat, pigtails, red-and-blue split makeup, and a 'Daddy's Lil Monster' tee. A perennial favorite from the comic and film worlds.

11. Clown — From cute rainbow clown to scary Pennywise-style clown, the category splits into friendly and frightening. Red noses, face paint, and oversized shoes do the work.

12. Angel — White robe or slip dress, a halo headband, and feathered wings. Pair with a devil for a classic couples look.

13. Devil — Red everything, a pair of horns, a tail, and a pitchfork. The easiest high-impact costume in the aisle.

14. Ninja — All black, a face mask, a headband, and a foam sword. Comfortable, warm for outdoor trick-or-treating, and endlessly reusable.

15. Spider-Man — The web-slinger never leaves the top ten. A full bodysuit for kids and adults alike; add a friend as Venom or Gwen Stacy for a group look.

Match the costume to your night. If you're trick-or-treating outdoors with kids, prioritize warmth, visibility (add reflective tape or glow sticks), and a costume you can walk in — the ninja, witch, and devil looks all qualify.

If you're headed to a party, lean into the 2026 trending picks. A Buddy the Unicorn or NeeDoh costume is a conversation starter, and a couples Agamemnon-and-Clytemnestra or Scooby-and-Shaggy pairing photographs beautifully.

On a budget? Most of these are buildable from a closet plus one or two accessories. See our guide to last-minute Halloween costumes from regular clothes for the breakdown, or shop ready-made options on our costumes page.

Ready-made 2026 costumes for adults, women, men, couples, girls, boys, and kids are linked on our Halloween costumes page. As an Amazon Associate, Halloween Countdown earns from qualifying purchases, which keeps the countdown free.

For the trending picks, shop early — Buddy the Unicorn and NeeDoh are selling fast, and the inflatable dinosaur suits always run low the last week of October.