Mermaid Prom Dresses

Shop mermaid prom dresses at ONTOEFY for a dramatic, hourglass silhouette. A fitted bodice hugs the waist and hips before flaring at the knee, creating a red-carpet look for prom photos.

Our collection includes satin and chiffon mermaid gowns with corset bodices, draped details, high slits, and lace-up backs. Choose black, red, burgundy, navy, emerald, and sage. Sizes 2-28, with custom sizing on selected styles.

Explore all prom dresses, corset prom dresses, or ball gown prom dresses.

Compare silhouettes in our mermaid vs ball gown guide.


I’m absolutely in love with my hoco dress! The quality is amazing, the fabric is soft and comfortable, and the fit is perfect. It’s stylish, flattering, and looked stunning at the dance. I got so many compliments all night long. Shipping was fast, and it’s totally worth the price. Highly recommend!
—— Mia S.

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Black floor-length prom dress, front view showing the mermaid silhouette
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Ruched Draped Slit Cowl Neck Mermaid Floor-Length Prom Dress for Awards Dinner

$93.99
Emerald Green floor-length prom dress, front view showing the mermaid silhouette
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Ruched Pleated Draped One Shoulder Mermaid Floor-Length Satin Prom Dress for Pageant

$107.99
Grey floor-length prom dress, front view showing the mermaid silhouette
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Draped Layered V Neck Mermaid Floor-Length Prom Dress for Gala

$90.99
Caribbean floor-length prom dress, front view showing the mermaid silhouette
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Beaded Halter Neck Mermaid Floor-Length Satin Prom Dress for Formal Dance

$104.99
Dark Green floor-length prom dress, front view showing the mermaid silhouette
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Sequin Slit Strapless Mermaid Floor-Length Prom Dress for Evening Event

$101.99
Yellow floor-length prom dress, front view showing the a-line silhouette
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Flower-Applique Floral Slit V Neck A-Line Floor-Length Satin Prom Dress for Special Occasion

$115.99
Mauve floor-length prom dress, front view showing the a-line silhouette
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Beaded V Neck A-Line Floor-Length Satin Prom Dress for Formal Party

$98.99
Olive Green floor-length prom dress, front view showing the mermaid silhouette
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Corset Slit Sweetheart Mermaid Floor-Length Velvet Prom Dress for Winter Formal

$103.99
Blush Pink floor-length prom dress, front view showing the mermaid silhouette
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Corset Flower-Applique Floral Slit Sweetheart Mermaid Floor-Length Jersey Prom Dress for Spring Formal

$117.99$129.99
Royal Blue floor-length prom dress, front view showing the mermaid silhouette
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Ruched Beaded Slit Sweetheart Mermaid Floor-Length Satin Prom Dress for Red Carpet Event

$114.99
Mauve floor-length prom dress, front view showing the mermaid silhouette
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Corset Flower-Applique Floral Slit Illusion Neck Mermaid Floor-Length Satin Prom Dress for Evening Banquet

$97.99
Moss floor-length prom dress, front view showing the mermaid silhouette
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Ruched Glitter Slit V Neck Mermaid Floor-Length Prom Dress for Black Tie Event

$94.99$109.00
Black floor-length prom dress, front view showing the mermaid silhouette
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Cut-Out Glitter Slit One Shoulder Mermaid Floor-Length Prom Dress for Pageant

$108.99
Black floor-length prom dress, front view showing the mermaid silhouette
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Ruched Corset Slit Halter Neck Mermaid Floor-Length Prom Dress for Gala

$91.99
Royal Blue floor-length prom dress, front view showing the mermaid silhouette
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Ruched Draped Slit Sweetheart Mermaid Floor-Length Satin Prom Dress for Formal Dance

$105.99
Dark Green floor-length prom dress, front view showing the mermaid silhouette
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Ruched Draped Slit One Shoulder Mermaid Floor-Length Satin Prom Dress for Prom Night

$119.99$151.99
Magenta floor-length prom dress, front view showing the a-line silhouette
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Draped Corset Ruffled Slit Sweetheart A-Line Floor-Length Tulle Prom Dress for Evening Event

$102.99
Pink floor-length prom dress, front view showing the mermaid silhouette
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Pink Draped Corset Floral Sweetheart Mermaid Floor-Length Prom Dress for Special Occasion

$116.99
Champagne floor-length prom dress, front view showing the mermaid silhouette
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Champagne Ruched Sequin Slit Sweetheart Mermaid Floor-Length Prom Dress for Ballroom Event

$113.99
Dusty Sage floor-length prom dress, front view showing the mermaid silhouette
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Floral Beaded Slit Strapless Mermaid Floor-Length Tulle Prom Dress for Hotel Gala

$107.99
Burgundy floor-length prom dress, front view showing the mermaid silhouette
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Sequin Backless Off Shoulder Mermaid Floor-Length Tulle Prom Dress for Charity Ball

$90.99
Emerald Green floor-length prom dress, front view showing the mermaid silhouette
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Ruched Slit Strapless Mermaid Floor-Length Prom Dress for Winter Formal

$104.99
Lilac maxi prom dress, front view showing the mermaid silhouette
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Lilac Ruched Corset Slit Strapless Mermaid Maxi Prom Dress for Awards Dinner

$112.99
Royal Blue floor-length prom dress, front view showing the mermaid silhouette
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Beaded V Neck Mermaid Floor-Length Prom Dress for Prom Night

$89.99

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