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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Burgundy floor-length prom dress, front view showing the mermaid silhouette
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Sequin Slit Square Neck Mermaid Floor-Length Satin Prom Dress for Evening Ceremony

$113.99
Dusty Blue floor-length prom dress, front view showing the mermaid silhouette
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Beaded Embroidered Sweetheart Mermaid Floor-Length Tulle Prom Dress for Formal Reception

$96.99
Blue floor-length prom dress, front view showing the mermaid silhouette
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Backless V Neck Mermaid Floor-Length Satin Prom Dress for Hotel Gala

$110.99
Champagne floor-length prom dress, front view showing the mermaid silhouette
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Embroidered Sequin Slit V Neck Mermaid Floor-Length Prom Dress for Charity Ball

$93.99$117.99
Fuchsia floor-length prom dress, front view showing the mermaid silhouette
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Beaded Slit Sweetheart Mermaid Floor-Length Satin Prom Dress for Winter Formal

$107.99
Black floor-length prom dress, front view showing the mermaid silhouette
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Cut-Out Slit Sweetheart Mermaid Floor-Length Jersey Prom Dress for Senior Prom

$104.99$122.99
Black floor-length prom dress, front view showing the mermaid silhouette
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Draped Sequin Off Shoulder Mermaid Floor-Length Prom Dress for Red Carpet Event

$118.99
Champagne floor-length prom dress, front view showing the mermaid silhouette
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Draped Sequin Slit Square Neck Mermaid Floor-Length Satin Prom Dress for Evening Banquet

$101.99
Steel Blue floor-length prom dress, front view showing the mermaid silhouette
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Ruched Slit V Neck Mermaid Floor-Length Satin Prom Dress for Awards Dinner

$115.99
Navy Blue floor-length prom dress, front view showing the mermaid silhouette
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Slit Sweetheart Mermaid Floor-Length Velvet Prom Dress for Black Tie Event

$98.99
Dusty Blue floor-length prom dress, front view showing the mermaid silhouette
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Sequin Sweetheart Mermaid Floor-Length Prom Dress for Gala

$95.99
Champagne floor-length prom dress, front view showing the a-line silhouette
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Flower-Applique Floral Sweetheart A-Line Floor-Length Satin Prom Dress for Formal Dance

$109.99
Burgundy floor-length prom dress, front view showing the mermaid silhouette
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Ruched Sequin Slit Sweetheart Mermaid Floor-Length Prom Dress for Evening Event

$106.99
Dusty Blue floor-length prom dress, front view showing the mermaid silhouette
US 2US 4US 6US 8US 10US 12US 14US 16WUS 18WUS 20WUS 22WUS 24WUS 26WUS 28W

Sequin Illusion Neck Mermaid Floor-Length Tulle Prom Dress for Special Occasion

$89.99$110.99
Lilac floor-length prom dress, front view showing the mermaid silhouette
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Corset Sequin V Neck Mermaid Floor-Length Tulle Prom Dress for Ballroom Event

$117.99$141.00
Moss floor-length prom dress, front view showing the mermaid silhouette
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Corset Beaded Sweetheart Mermaid Floor-Length Tulle Prom Dress for Ballroom Event

$100.99
Black floor-length prom dress, front view showing the mermaid silhouette
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Black Cut-Out Sequin Slit Plunging Neckline Mermaid Floor-Length Prom Dress for Evening Ceremony

$114.99
Black 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 Reception

$97.99
Lavender 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 Hotel Gala

$111.99$121.99
Moss floor-length prom dress, front view showing the mermaid silhouette
US 2US 4US 6US 8US 10US 12US 14US 16WUS 18WUS 20WUS 22WUS 24WUS 26WUS 28W

Cut-Out Sequin Slit Halter Neck Mermaid Floor-Length Prom Dress for Charity Ball

$94.99
Magenta 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 Winter Formal

$108.99
Blue floor-length prom dress, front view showing the mermaid silhouette
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Draped Flower-Applique Floral Sweetheart Mermaid Floor-Length Tulle Prom Dress for Spring Formal

$91.99
Lavender 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 Senior Prom

$105.99
Dusty Rose floor-length prom dress, front view showing the mermaid silhouette
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Ruched Draped V Neck Mermaid Floor-Length Satin Prom Dress for Red Carpet Event

$119.99$130.00

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