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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Fuchsia maxi prom dress, front view showing the mermaid silhouette
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Ruched Cut-Out Slit Sweetheart Mermaid Maxi Satin Prom Dress for Prom Night

$102.99$123.99
Blush Pink floor-length prom dress, front view showing the mermaid silhouette
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Blush Pink Corset Embroidered Floral Slit Sweetheart Mermaid Floor-Length Satin Prom Dress for Formal Party

$113.99$140.00
Pale Lemon floor-length prom dress, front view showing the mermaid silhouette
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Pale Lemon Ruched Corset Slit Strapless Mermaid Floor-Length Satin Prom Dress for Hotel Gala

$90.99
Watermelon floor-length prom dress, front view showing the a-line silhouette
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Ruched Side-Slit Slit Sweetheart A-Line Floor-Length Satin Prom Dress for Charity Ball

$104.99$117.00
Floral maxi prom dress, front view showing the mermaid silhouette
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Floral Bow Glitter Floral Slit Strapless Mermaid Maxi Prom Dress for Spring Formal

$101.99$112.00
Dark Blue floor-length prom dress, front view showing the mermaid silhouette
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Corset Bow Slit Sweetheart Mermaid Floor-Length Satin Prom Dress for Senior Prom

$115.99
Pale Lemon floor-length prom dress, front view showing the mermaid silhouette
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Pale Lemon Draped Corset Floral Sweetheart Mermaid Floor-Length Crepe Prom Dress for Red Carpet Event

$98.99$107.00
Lavender floor-length prom dress, front view showing the mermaid silhouette
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Corset Beaded Slit V Neck Mermaid Floor-Length Prom Dress for Awards Dinner

$95.99$112.99
Lavender floor-length prom dress, front view showing the mermaid silhouette
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Draped Corset Slit V Neck Mermaid Floor-Length Satin Prom Dress for Black Tie Event

$109.99
Black floor-length prom dress, front view showing the mermaid silhouette
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Black Draped Beaded One Shoulder Mermaid Floor-Length Tulle Prom Dress for Gala

$106.99$138.99
Red floor-length prom dress, front view showing the mermaid silhouette
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Red Draped Backless V Neck Mermaid Floor-Length Stretch Satin Prom Dress for Special Occasion

$100.99$118.99
Sage Green floor-length prom dress, front view showing the mermaid silhouette
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Corset Beaded Strapless Mermaid Floor-Length Tulle Prom Dress for Formal Party

$114.99$147.99
Hot Pink floor-length prom dress, front view showing the mermaid silhouette
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Ruched Sweetheart Mermaid Floor-Length Satin Prom Dress for Celebration Dinner

$111.99$139.99
Red floor-length prom dress, front view showing the mermaid silhouette
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Ruched Draped Strapless Mermaid Floor-Length Chiffon Prom Dress for Evening Ceremony

$94.99
Rose Gold floor-length prom dress, front view showing the mermaid silhouette
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Rose Gold Corset Floral Slit Sweetheart Mermaid Floor-Length Tulle Prom Dress for Formal Reception

$108.99
Light Blue floor-length prom dress, front view showing the mermaid silhouette
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Light Blue Beaded Sequin Plunging Neckline Mermaid Floor-Length Tulle Prom Dress for Charity Ball

$105.99$116.99
Teal floor-length prom dress, front view showing the mermaid silhouette
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Teal Ruched Draped Slit Sweetheart Mermaid Floor-Length Satin Prom Dress for Awards Dinner

$96.99
Black floor-length prom dress, front view showing the sheath silhouette
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Black Corset Rhinestone Sweetheart Sheath Floor-Length Satin Prom Dress for Black Tie Event

$110.99
Red floor-length prom dress, front view showing the mermaid silhouette
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Red Ruched Draped Slit Strapless Mermaid Floor-Length Satin Prom Dress for Gala

$107.99$126.99
Royal Blue floor-length prom dress, front view showing the mermaid silhouette
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Flower-Applique Sequin Floral Slit V Neck Mermaid Floor-Length Tulle Prom Dress for Formal Dance

$90.99$101.99
Red floor-length prom dress, front view showing the mermaid silhouette
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Red Sequin Slit One Shoulder Mermaid Floor-Length Prom Dress for Evening Event

$118.99$135.00
Red floor-length prom dress, front view showing the mermaid silhouette
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Red Cut-Out Sequin Floral Slit V Neck Mermaid Floor-Length Prom Dress for Special Occasion

$101.99
Lavender floor-length prom dress, front view showing the mermaid silhouette
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Lavender Corset Sequin Floral V Neck Mermaid Floor-Length Tulle Prom Dress for Ballroom Event

$98.99$114.99
Black maxi prom dress, front view showing the mermaid silhouette
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Black Draped Corset Slit Strapless Mermaid Maxi Satin Prom Dress for Celebration Dinner

$112.99$132.00

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