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The Prettiest Mermaid Party Ideas Ever!

Inside: Throw an amazing party for your child with these easy mermaid party ideas!

With 2 boys running around my house, it’s clear I won’t have many opportunities to plan birthday parties for girls.

In the past, we’ve had a dinosaur birthday party, a hungry caterpillar birthday party, and a Star Wars party just to name a few.

Every once in a while, I like to throw together my favorite kids party ideas that are perfect for little girls!

The first one I made showcased the coolest unicorn party ideas and today I’m sharing the next one:

A mermaid birthday party that’s perfect for any little girl! 

Read on below to see how simple and fun it is to plan a mermaid party your girl will love.

Mermaid Party Ideas She’ll Love

Mermaid Party Ideas | Plan the best DIY mermaid birthday party with these fun ideas that include decorations, food ideas, invites, games, favors, a cake, activities and more! #mermaidparty #mermaid #kids #kidsparty #kidspartyideas #childrensbirthday #birthday #birthdayparty #partyplanning #partydecor #girlsparty


I always say the invitations set the tone of the party, so you’ll want to be sure you pick the perfect ones!

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Little girls will love the sweet and youthful feel of these invitations.

Older girls may prefer the sophisticated feel of these mermaid invitations.

Whichever invitation you choose, use the color palette for the rest of the party. It’s a simple way to make the whole party feel cohesive without making everything overly matchy matchy.

Party Favors

One of the best parts of planning any party is creating the party favors!

There are just too many great ideas to choose from, so check out a few of the top picks below and create a fabulous party favor your daughter will love.

Mermaid Party Favor Ideas #mermaidparty #birthday #kidsparties

These easy DIY mermaid crayons would be fun to add to a mermaid party favor bag and they’re so simple to make!

Mermaid Party Slime Favor Idea #slime #mermaidparty #girlsparty #kidspartyideas #partyfavor #kids

Kids can’t seem to get enough slime, so why not make this sparkly mermaid slime, package it up in these clear cups and add it to the party favor bag?!

No young girl could resist these sparkly mermaid slap bracelets. They come in a twelve pack and each one has reversible colored sequins!

Does your little girl love to craft? If so, then make these DIY mermaid bath bombs a few days before the party and package them up to hand out to all of the guests.

If you want some candy for your treat bags, use these blue gummy sharks, these Swedish fish or these candy fish to stay with the ocean theme.

Of course, you’ll need something to hold all the fun goodies from the party. These drawstring mermaid party favor bags are perfect for holding a few small treats!


A few well placed decorations can have the party venue looking top notch in no time flat. Check out some of my favorite mermaid party decorations.

A balloon set like this one is great for easy decorating since you’ll have a mixture of mylar and latex balloons to spread out around the party area. If you need more balloons, I’d use these pearlized balloons in lavender and baby blue.

Mermaid party decorations #partyideas #partydecorations #kidsparty

If your little girl wants to help decorate for her big day you can make these mermaid paper chains ahead of time and then hang them on the dessert table or along the birthday girl’s chair.

Grab some of this fish netting and these white starfish to decorate the dessert table for an instant mermaid feel.

Add in some blue, lavender, purple and white decorations like these tassels, poms, and garland to make any space extra festive.

Mermaid Party Supplies

To keep the mermaid theme going, use these mermaid scale paper plates and paper mermaid cups.

Or if you want to have a more subtle ocean theme, try these blue and white ombre plates.

Need a mermaid cake topper? Try these reusable sequin toppers. They’re perfect for cakes or cupcakes and keep the party sparkling!

Games & Activities

collage of mermaid coloring pages

I love having coloring pages ready for the kids as soon as they arrive.

It’s the perfect way to keep the kids occupied while waiting for all the guests. These mermaid coloring pages are so cute and you can even add some sequins to really give them that fish scale look!

Mermaid party activities: Make a diy mermaid sequin notebook. #mermaid #mermaidbirthdayparty #themedbirthdayparties

Older girls will love making these mermaid sequin notebooks. They double as both a fun party activity and a party favor.


Mermaid Party Food | Clam Cookies #mermaid #girlsbirthdayparty

If you’re the DIY type, you can make these simple and adorable clams shell cookies with just a few ingredients and some time.

mermaid party food ideas

Wow the kids with these mermaid fish sticks topped with the prettiest mermaid mayo you’ve ever seen!

Your kids won’t believe this sand pudding recipe is not only edible but super delicious. Make it ahead of time and serve it in some clear plastic cups with a fun little ocean themed pick.

Easy DIY mermaid cake for birthday party #mermaidbirthdayparty #partyideas #kidsparty

Guests will think you spent a ton of money on a custom mermaid cake, but you’ll know this DIY mermaid cake is budget-friendly and easy since you start with a store-bought cake!

Mermaid party food #mermaid #kidspartyideas #kidsparty

Is your little birthday girl not a traditional cake type of person? No problem. Serve these amazing mermaid ice cream shakes instead. None of your guests will even miss the cake!

Mermaid Party Food Idea #mermaidparty #partyfood

Serve these super simple and adorable mini jello fish bowls that go perfectly with the mermaid party theme.

Mermaid Birthday Outfit

Help make the birthday girl feel extra special with these fun mermaid outfit ideas.

These mermaid leggings are too cute to pass up and are perfect for little girls.

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Pair them with a custom birthday shirt, like this one, and your little girl will be the star of her mermaid birthday party.

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For a dressier party, dress your little girl up in this adorable mermaid party dress.

With all the amazing mermaid party ideas out there, I’m sure you’ll be able to throw the perfect party your daughter will love!

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