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Adult Halloween Costumes

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Costumes aren't just for kids! Our adult costumes will have grown-ups getting excited for Halloween. We have a selection of the best Halloween costumes for men and women of all styles and sizes. Browse through to find plus size costumes, funny adult costumes, and even sexy costumes. Or pair up with your significant other and choose a stunning couples costume look that'll be sure to win any costume contest!
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Stitch Pajama Costume
Sale - 7%
$105.99$98.99
Adult Tiger Kigurumi
Sale - 29%
Adult Green Iguana Kigurumi
Sale - 47%
Adult Blob Fish Costume
Sale - 50% Made By Us
$70.99$35.99-$70.99*
Adult Fox Kigurumi Alt 5
$91.99
Up to 31% off – See low price in cart
Adult Gremlins Gizmo Costume
Sale - 50% Made By Us
$84.99$42.99-$84.99*
Fennec Fox Kigurumi
Clearance  - 57%
$98.99$42.99
Adult Cozy Skeleton Onesie
Made By Us Exclusive
Power Rangers Red Ranger Hooded Union Suit
Sale - 20% Made By Us
Dragon Ball Z Goku Union Suit
Sale - 57%
Macho Man Union Suit
Sale - 80% Made By Us
Adult Hulk Hogan Union Suit
Sale - 70% Made By Us
Adult Spooky Black Cat Kigurumi
Sale - 23%
Wolf Adult Kigurumi
Sale - 17%
Adult 101 Dalmatians Pongo Costume Onesie-2
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Sale - 40% Made By Us
Cozy Skeleton Onesie
Sale - 36% Made By Us
Brown Bear Adult Onesie
Made By Us Exclusive
Sesame Street Elmo Onesie Costume
Made By Us Exclusive
Adult Narwhal Onesie Costume
Made By Us Exclusive
Alien Pajama Costume Front
$112.99
Up to 25% off – See low price in cart
Adult Cheshire Cat Onesie Alt 2
Made By Us Exclusive
Adult Funny Bunny Onesie
Made By Us Exclusive
Adult's Cheer Bear Care Bear Onesie
Made By Us Exclusive
Sesame Street Cookie Monster Onesie
Made By Us Exclusive
Adult Ludo Union Suit Labyrinth Costume
Made By Us Exclusive
Adult Frog Onesie Costume
Made By Us Exclusive
Adults Garfield Onesie Costume
Made By Us Exclusive
Adult Transformers Optimus Prime Union Suit
Made By Us Exclusive
Brown Bear Plus Size Onesie
Made By Us Exclusive
Adult Giraffe Onesie
Made By Us Exclusive
$77.99-$91.99
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Can't decide what you want to be for Halloween? HalloweenCostumes.com has a huge variety of the best Halloween costumes for adults for you to choose from. Ranging in styles from our sexy Princess Leia slave costume to our men's deluxe Darth Vader as well as brand new adult costumes for 2024. We have unique and exclusive adult costumes at the best prices on the web. You'll find our adult costume selection to be a comprehensive list of classic looks combined with the latest trends. Whether scary, funny, or even sexy, we have adult costumes for everyone's style and taste. Celebrate the holiday with an iconic and fashionable adult costume idea and throw your own timeless masquerade party this season.

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