Encourage creativity and imagination, and prepare for trick-or-treating with Costco’s Halloween Costumes collection. Designed for everyday dress-up fun, school parties, and spooky October nights, our selection offers high-quality, comfortable kids' Halloween costumes and toddler Halloween costumes built for all-day play. Shop top-rated Halloween costumes at Costco for premium fabrics, complete multi-piece sets, and member-exclusive wholesale values.

• Classic & Spooky Favorites: Transform your little one into a spooky ghost, witch or vampire, a roaring dinosaur, or colorful butterfly.
• Fairytale & Princess Costumes: Fulfill their fantasy with magical fairy outfits and princess costumes with crowns and wands.
• Heroic Career & Pretend Play: Inspire creative roleplay with hero dress-up sets like firefighter, police officer, and special forces.