Mermaid Halloween Costumes

Ghosts, goblins, pumpkins, and bats! Mermaid Halloween costumes are the perfect adornment for trick or treating, parties, or anytime it just makes sense to become a mermaid!

Not just mermaids, mind you. We've got costumes for all merfolk — merbabies, merkids, mermen, and merpets, too! 

Cute, creepy, sexy and silly, there's something here for everyone!

Infant Mermaid Halloween Costumes

Infant Mini Mermaid Costume (paid link)

Is there anything more adorable than babes dressed as mermaids? These tiny mermaid Halloween costumes bring "too cute" to a whole new level! Think of all the photos you can take! Great for matching themes with Mom or Dad or siblings, too.

Infant Girls Mermaid Costume (paid link)

Kids

Whether it's Ariel from The Little Mermaid, a sea witch like Ursula, a mermaid skeleton, or even a mermaid orca whale (is there such a thing?!), one of these delightful kids' costumes are perfect for Halloween fun!

Girls Mysterious Mermaid Costume (paid link)

Girls Mermaid Costume (paid link)

Child Bubbly Mermaid Costume (paid link)

Child Mermaid Costume (paid link)

Sweet Mermaid Child Costume (paid link)

Child Magical Mermaid Costume (paid link)

Girl's Skeleton Mermaid Costume (paid link)

Girl's Sea Siren Costume (paid link)

Girl's Dark Skeleton Mermaid Costume (paid link)

Blushing Beauty Mermaid Girl's Costume (paid link)

Darkest Siren Costume for Girls (paid link)

Girl's Sea Witch Costume (paid link)

Girls Sparkling Mermaid Costume (paid link)

Orca Girls Mermaid Costume (paid link)

Girl's Sea Witch Costume (paid link)

Women

Alluring, devilish, sweet, sexy, adorable, stylish — take your pick with these spectacular siren of the sea costumes in all shapes and sizes!

Women's Shell-a-brate Mermaid Costume (paid link)

Disney Little Mermaid Prestige Womens Ursula Costume (paid link)

Womens Pink Mermaid Costume (paid link)

Disney Little Mermaid Ariel Deluxe Women's Costume (paid link)

Adult Women's Mythic Mermaid Costume (paid link)

Women's Black Mermaid Costume (paid link)

Under the Sea Mermaid for Women (paid link)

Women's Undersea Mermaid Costume (paid link)

Under the Sea Mermaid Women's Costume (paid link)

Glamour Skeleton Mermaid Women's Costume (paid link)

Women's Deep Sea Siren Costume (paid link)

Womens Siren of the Sea Costume (paid link)

Sea Siren Women's Costume (paid link)

Elite Mermaid Costume (paid link)

Adult Sweet Mermaid Costume (paid link)

Skeleton Mermaid Costume for Women (paid link)

Plus Size

Women's Plus Size Blushing Beauty Mermaid Costume (paid link)

Plus Size Women's Shell-a-brate Mermaid Costume (paid link)

Plus Size Women's Undersea Mermaid Costume (paid link)

Women's Sea Siren Plus Size Costume (paid link)

Women's Plus Size Sultry Sea Witch Costume (paid link)

Women's Plus Size Alluring Sea Siren Mermaid Costume (paid link)

Women's Plus Size Little Mermaid Ursula Prestige Costume (paid link)

Men

Okay gents, you too can be a mermaid! Show off all that work you do at the gym in salty sea style! Or if your companion plans to dress as Ariel, of course you must become the handsome Prince Eric! And if those don't suit you, well, there's always the Mermaid Mafia!

Men's Salty Merman Costume (paid link)

Disney Prince Eric Deluxe Men's Costume (paid link)

Men's Mermaid Mafia Costume (paid link)

And Let's Not Forget...

Pet Costume Ariel (paid link)

Mermaids > Mermaid Cake > Mermaid Halloween Costumes

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What's New?

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