Yesterday we shared our super cute gift wrap ideas for a mermaid party. So today is all about the birthday card! If the birthday kiddo loves mermaids, then you will definitely need a mermaid birthday card. Especially one that tells them to have a mer-mazing birthday!

As a member, you can simply print the card, trim to size, and fold it in half. Also, as a fun bonus, we have designed envelope liners to match your mermaid-themed party. It just adds a little something special, we think! You can find them in the PDF below, separate from our mermaid birthday card.

Fishing You a Mermazing Birthday!

You know we can’t resist a good pun. Or cute illustrations. And our mermaid birthday card has both! As you may know, we love to design printable birthday cards for a themed party. And right now, we’re all about the mermaids.

Along with our mermaid birthday card, we designed some mermaid wrapping paper and mermaid cake decor for you to make at home. You can also cut out some seashells from this post, which you can use to make your own paper garland. Or just scatter them on your party table for some fun “under the sea” decor.

We will be posting more mermaid party ideas over the next few days, so stay tuned!


Simply download the PDF below and print your mermaid birthday card onto white cardstock. Write your birthday wishes inside and enclose in a matching envelope. We recommend using this pretty pink metallic A7 envelope. Or you could also use this fun metallic green envelope.

This content uses links from which we may earn a commission. Disclosure.

mermaid birthday card

Get Crafty with Us!

Want more ideas? Browse our kid’s parties page. Or find more simple printables here.!

For daily craft inspiration, join us on InstagramPinterest, and Facebook. Or browse our DIY craft tutorials on YouTube.

To start crafting with us, become a member today! Choose from two membership options that empower you to become a brilliant crafter and make projects you love.