25 Trio Halloween Costume Ideas for Friends, Siblings & More

Halloween is always more fun with friends—and if you're rolling three-deep this spooky season, it's time to coordinate your costumes! Whether you're heading to a party, snapping photos, or trick-or-treating, trio Halloween costumes offer the perfect chance to showcase creativity, humor, and team spirit.

Classic trios like the Powerpuff Girls, Alvin and the Chipmunks, or The Sanderson Sisters never go out of style. Pop culture fans can transform into characters from Harry Potter, Stranger Things, or Barbie, Ken & Weird Barbie. Prefer something punny or unexpected? Try a traffic light, rock-paper-scissors, or three blind mice!

You can mix and match by personality—one spooky, one cute, and one funny. Or go totally themed with a story-based set like The Wizard of Oz (Dorothy, Scarecrow, Tin Man). Group costumes are also a great way to include different styles—DIY or store-bought, it’s all about having fun together.

So grab your besties, siblings, or coworkers and show up as an unforgettable trio. These costume ideas are triple the fun and guaranteed to turn heads this Halloween!

Epic Trio Halloween Costumes You’ll All Agree On

25. WANDA, COSMO, AND TIMMY

24. SHREK, DONKEY, AND PUSS IN BOOTS

23. NINJA TURTLES

22. JESSIE, BUZZ, AND WOODY

21. HARLEY QUINN, JOKER, AND BATWOMAN

20. TOY STORY ALIENS

19. POWERPUFF GIRLS

18. IN-N-OUT SERVERS

17. KISS, MARRY, KILL

16. WINNIE, TIGER, AND PIGLET

15. 3 BLIND MICE

14. VICTORIA’S SECRET ANGELS

13. BOXERS

12. MEAN GIRLS COSTUME

11. MINIONS

10. The CHIPETTES

9. CHEETAH GIRLS

8. BALLERINAS

7. GATORADE

6. CONSTRUCTION WORKERS

5. BRATZ DOLLS

4. STARBUCKS DRINKS

3. REFEREES

2. BELLE, TIANA, AND RAPUNZEL

1. FOOTBALL PLAYERS

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