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The Best Mermaid Birthday Party Ideas

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Are you throwing an upcoming Mermaid Birthday Party? I’ve found a few of the cutest ideas from some of my favorite bloggers! Get 20+ of the best Mermaid Party Ideas I have seen, and plan your own magical mermaid party!

Mermaid Birthday Party Ideas

Mermaid Parties are SO popular right now and there are a ton of really cute ideas floating around! From Mermaid Birthday Party Food, Decorations, and Cakes, there is so much inspiration! Year round, Mermaid Birthday Party Invitations are one of my most requested party and stationery themes for the Summer!

Don’t Miss My Other Mermaid Birthday Party Ideas Posts:

There are a TON of cute Mermaid Birthday Party Decorations on Amazon:

Mermaid Birthday Decorations

Amazon is a great place to find party decorations if you don’t have time to DIY everything!

Here are some of my favorite mermaid birthday party ideas:

Mermaid Birthday Party Ideas

This DIY cake topper is one of my favorite Cricut projects I’ve made. There’s glitter that moves in the tail!

Mermaid Cake Topper Easy DIY with Cricut
DIY Mermaid Cake Topper
Download a FREE Mermaid Cake Topper SVG to decorate an EASY DIY Mermaid Cake!

Simple bottles of bubbles make easy DIY mermaid party favors.

Mermaid Party Printables – Spot of Tea Designs
"See how to turn store bought cupcakes and a bottle of bubbles into yummy desserts and fun party favors with the help of mermaid party printables!"

The pastel mermaid details in this party are perfect!

Pastel Mermaid Birthday Party | Kara’s Party Ideas
"Party like a mermaid with the ideas in this Pastel Mermaid Birthday Party at Kara’s Party Ideas. See the deliciously glorious ideas inside!"

Another easy DIY – nilla wafers made into clam shells with pearls!

Mermaid Tea Party Birthday with Clam Shell Cookies – Houseful of Handmade
"The perfect birthday party for a little girl, a mermaid tea party! Lots of great ideas on how to throw a mermaid tea party with free printables."

I love all of the little details in this party!

Mermaid Bash 5th Birthday Party – Pizzazzerie
"Check out how Sofia celebrated her 5th birthday with a MERMAID BASH full of darling details, sweet mermaid treats, and the cutest party touches!"

Blue jellybeans + goldfish in a bag are a genius idea for a mermaid party!

Under the Sea Party – Young House Love
"Lately we’ve been aiming to make our kids’ birthday parties easy, low-stress, but still fun for them and us (did someone say theme?). Here’s how we did it."

Nothing is easier than putting rock candy in a bucket – but look at the little vinyl details on the plastic bin!

Throw a Mermaid Themed Party Cheap – Budget 101
Mermaid themed parties are very popular and it’s easy to see why! Here are some simple mermaid decorations, party favors, party ideas and more…

This is perfect for a mermaid birthday! I love it!

How to Make a Colorful Mermaid Drink – Make Life Lovely
"Make a simple mermaid drink that’s so pretty, tastes amazing, and has only 2 ingredients! Make this magical mermaid punch in under 5 minutes with this simple recipe."

Ocean water is a super simple recipe and looks so pretty!

Mermaid Party Punch | Ocean Water Recipe – We’re the Joneses
"How to make a delicious Mermaid Party Punch (or Ocean Water Punch) for your Under The Sea Themed Birthday Party – Easy 3 Simple Ingredients!"

Chocolate covered pretzels are always an easy DIY.

How to Make Mermaid Tails – Ever After in the Woods
"A special mermaid deserves a special mermaid tails. These chocolate covered pretzels…"

Another easy recipe – mermaid trail mix!

Mermaid Trail Mix – Live Sweet Blog
The sweetest trail mix perfect for mermaids of all ages.

Mermaid sprinkles (you can shop for similar sprinkles on Amazon) makes this dip mermazing!

Mermaid Dip – Easy Cheesecake Dip! – Kids Activity Zone
"Delicious cheesecake marshmallow dip with festive colors! Mermaid Dip is the perfect dessert dip to dunk vanilla wafers and so much more."

A Little Mermaid birthday party is a very popular request!

Little Mermaid Themed Birthday Party – Kara’s Party Ideas
"Swimming the ocean looking for a Little Mermaid themed birthday party? At Kara’s Party Ideas we’ve got the starfish, tridents, and mermaid wishes for you!"

Dinglehoppers! Enough said about this mermaid party!

Little Mermaid Party: Under the Sea Adventure – Hostess with the Mostess®
"The Little Mermaid Under the Sea Birthday Party with netting and starfish backdrop, pearl and coral decor, ariel and plush characters, jellyfish lanterns, clam macarons and more…"

I love the glitter around the rim of the glass in this take on ocean water.

How to Make Magical Mermaid Lemonade – Easy Colorful Mocktail
"This mermaid lemonade recipe is bright, colorful, and perfect for your child’s mermaid themed birthday party! Check out this mermaid mocktail now!"

Adorable little treasure chests!

Under the Sea Mermaid Party – Chic Home & Styled Parties
"Planning an under the sea mermaid theme party? Well, look no further for the most unique and fun ideas. Check out this party reveal and shop the look."

This mermaid themed balloon display is PERFECT. I love everything about it!

Shell-ebrate! Della’s 1st Birthday – McKenna Bleu
The balloon shell is incredible and so are the rest of the party details…

This take on dirt dessert is perfect for a beach, luau, or mermaid party.

Sand Pudding Cups – Lil’Luna
"Crumbly and creamy sand pudding cups are a tasty beach inspired treat. Enjoy a quick and easy sandy escape perfect for sharing!!"

Mermaid cupcakes are too hard to make with fondant molds and graham cracker sand!

DIY Beach Cupcakes — Eat Cake Be Merry
"Bring the beach to your kitchen any day with these DIY cupcakes! These sweet treats are as fun as the beach itself and will transport you to the sunny shores of Fort Myers and Sanibel…"

This boho mermaid birthday party is unique and so pretty. I love the colors!

Boho Mermaid Birthday Party – This Modern Farmhouse
"Sophie has been looking forward to her birthday party since the day school got out! She’s a summer baby, so her parties always include water of some kind, even thought we’ve never had a…"
Mermaid Party Favor Ideas - Kimspired DIY
Mermaid Party Favor Ideas – Kimspired DIY
Throwing a mermaid party and looking for the best mermaid party favors? Find the coolest party favor ideas for a mermaid theme party.

Latest Posts:

If you have a little girl and you’re looking to expand on the Mermaid Birthday Party Ideas above, I also have a great tutorial for a Mermaid Birthday Party Outfit using your Cricut machine–this shirt reminds you to Always Be a Mermaid!

Always be a Mermaid Birthday Outfit by Pineapple Paper Co.

More Party Ideas from Pineapple Paper Co:

Magical Unicorn Birthday Party with Martha Stewart, Cricut, and Michaels

Paw Patrol Birthday Party Ideas

Summer Peach Party with Martha Stewart, Cricut, and Michaels

Flamingo and Pineapple First Birthday Party Ideas

Dinosaur Birthday Party with Martha Stewart, Cricut, and Michaels

Fall Birthday Party Ideas

American Girl Birthday Party Ideas

mermaid party ideas for an under the sea party
Mermaid Birthday Party Ideas

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about charynn


Hi, y’all! I’m Charynn, the owner and designer of Pineapple Paper Co. I’m a mom of four kids (two girls and two boys) living in Pittsburgh. I love hand lettering, anything southern, cocktails, and of course, pineapples! I am excited to share my SVG files, printables, and craft projects with you! The pineapple is a symbol of hospitality, and I welcome y’all to my little corner of the internet. Read more…

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