The very first birthday of your little one is truly a momentous occasion! After a whole year of love, laughter (and a few sleepless nights), it’s time to celebrate reaching this important milestone. Whether you’re planning on hosting an intimate get-together at home or a bigger event in a venue, deciding on the ideal theme for their first birthday celebration is the first step. To help you come up with some ideas, we’re sharing top trending 1st birthday party themes that other parents are currently obsessed with!
From smart, pun-ny party themes to cute and classic choices, there’s something to suit everybody’s tastes. Continue reading to discover 2025’s most popular first birthday themes, complete with recommendations for invitations, gift wrap, decorations, and tableware, all of which you can customize right here on our site!
Oneasaurus
With this rawr-some party theme idea, you can transport your guests all the way back to the age of dinosaurs! Although, some of our dinosaurs are more adorable than they are fearsome.
Wild One
There’s no denying that your little is a wild one, especially now that they’ve been growing for a full year! Capture this wholesome moment in time with a cute theme inspired by wild animals in the jungle.
One Happy Dude
Your baby’s first year has undoubtedly been full of smiles, giggles and happy memories! This lighthearted theme idea will be sure to bring lots of fun to your celebration.
The Big One
The first birthday is always going to be a big one! Ride the wave of their very first year in style with and go all-out with this theme idea!
Fancy One
If you’d love nothing more than to design a fanciful first birthday party full of glittery accents, big bows, pretty florals, and stunning drapery, this could be the ideal theme idea for you!
Hole in One
This is a wonderful theme idea for any golf-obsessed parents or families! Turn your venue into a golf course and get ready to par-tee!
One Happy Camper
Who wants some s’mores? Whether you opt for an outdoor party or recreate that same vibe inside, this theme will help you curate a super cozy experience packed with all the fun that camping brings.
Fast One
Time flies when you’re having fun, and after a joyous first year with your new baby, you might be wondering how it went so fast. This race car theme is a lovely way to convey this precious yet fast-paced time!
One Rocks
This rock star-themed birthday party idea will have your attendees hyped! Your little one rocks, so they deserve the best celebration with their number one fans.
1st Fiesta
Throw a bright and colorful fiesta-themed party for your one-year-old if you’d like to bring a little extra flavor to the event. Nothing says ‘celebrate’ quite like the immaculate vibes of a fiesta!
First Year Down
For football fanatics, this party theme is sure to be a touchdown! Why not celebrate their very first birthday with a cheerful, football-themed get-together?
Berry First Birthday
This adorable theme idea is as sweet as it is clever! Whether your favorite berries are strawberries, raspberries, or blueberries, your party will be simply bursting with love.
One Silly Goose
This humorous first birthday party theme is guaranteed to garner some giggles! Take a vintage approach to your party set-up with this classic kid-friendly motif.
1st Trip Around the Sun
Your little bundle of joy is a total ray of sunshine (most of the time)! So what better theme to pick than this gorgeous one?
One-der the Sea
Prepare your finest mermaid costumes for this beautiful birthday theme idea! Take your guests on a trip to the ocean floor and celebrate with all of the cutest sea creatures.
1st Rodeo
Yeehaw! Round up your loved ones, and put on a cowboy hat to sing happy birthday to your little one with this trendy theme choice.
One Lucky Duck
Feeling like a lucky duck to have such a precious little baby in your life? Then this timeless kid’s birthday theme idea is a total winner!
A Onederful World
Your world has definitely gotten a lot more wonderful since welcoming your little one. Picking this theme will allow you to convey your gratitude far and wide!
We hope this guide has offered you some inspiration on how to pick an extra-special first birthday theme! If you have any other adorable theme ideas suitable for first birthday parties, feel free to share them in the comments under this article.
Ella is a content specialist from Cork, Ireland. Her passions include spending time with her two energetic dogs, fashion, photography, and trying new vegan food!
