25 Adorable Knitted Baby Onesies & Rompers to Make (2024)

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By amanda

What better way to welcome a new baby into the world than with one of these knitted baby onesies or rompers. There’s nothing quite so gratifying as seeing a baby wear your completed project. If you have never knit a baby onesie before, then you really owe it to yourself to try.

Do you know how to knit a baby onesie? Even if you have never made any knitted baby onesies or rompers before, I bet that there are a few patterns in this curated list that will be right up your alley. Keep an eye out for our beginner friendly patterns that use basic stitches like garter and stockinette.

If you are up for a challenge, we have free patterns for knitted baby onesies and rompers for you too. Try your hand at lacework, cablework, and colorwork to create a knitted baby onesie that is sure to impress.

Whatever kind of knitted baby onesies and rompers you are searching for, you are bound to find them here! We have short sleeve ones and long sleeve ones and some that just have little overall straps. There are some with hoods and some with attached socks. You can even practice your stranded colorwork skills with a couple designs inspired by animals.

The one thing that all of these knitted baby onesies and rompers have in common is that they are so stinking cute. The best part is that many of the designers have photos of their onesies being modeled. So not only will you get to see so many adorable onesie designs, but you will also get to see a virtual parade of cute babies too! Start scrolling and you will soon see what I mean.

In this article...

Mustard Baby Romper

25 Adorable Knitted Baby Onesies & Rompers to Make (1)

Mustard yellow is such a popular color right now and I think it’s absolutely perfect for a bold and modern baby romper. This free knitting pattern contains many helpful step by step photos that will make knitting this baby romper a breeze. The design is made using garter stitch and there’s also some ribbing along the edges.

Designer: Creativa Atelier

Yarn: Garnstudio DROPS Cotton Merino (DK Weight #3)

Click here for the free knitting pattern!

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Afternoon Playdate

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This handsome fellow is looking especially dapper in his new duds. I love the sweet simplicity of his pretty blue romper. The pattern is knit using a nice thin yarn that really allows the fabric of the work to drape well and move with the baby. It is knit with stockinette stitch for the main body and rib stitch on the bib and fold up leg cuffs.

Designer: DROPS Design

Yarn: Garnstudio DROPS Flora (Light Fingering Weight #0)

Click here for the free knitting pattern!

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Pepita

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Sure, knit socks for babies are adorable, there’s no question about it. But wiggly babies are experts at losing them. That’s where the Pepita baby onesie comes in! The stretchy ribbed socks are attached to the rest of the stockinette stitch romper so there’s no chance of them falling off.

Designer: Strickmich!

Yarn: Rohrspatz & Wollmeise Pure 100% Merino Superwash (Fingering Weight #1)

Click here for the free knitting pattern!

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Babbity Baby Romper

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A basic raglan style yoke is the starting point for this dapper baby onesie in a bright and bubbly shade of blue. The stockinette stitch body is accented along the yoke, button band, and leg holes with textured garter stitch. It would be easy to add length on to the arms and legs if you would prefer a long sleeve version.

Designer: Marianna’s Lazy Daisy Days

Yarn: (DK Weight #3)

Click here for the free knitting pattern!

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Little Blue Dream

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The baby pictured above couldn’t be cozier than in this adorable button up baby onesie complete with a snuggly rib stitch hood. He even has a little crochet friend to keep him company! My favorite part of this design is the fold up cuffs on the arms and legs because you can unfold them as the baby grows and get more wears out of it!

Designer: DROPS Design

Yarn: Garnstudio DROPS Merino Extra Fine (DK Weight #3)

Click here for the free knitting pattern!

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Baby Fox Onesie

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A bit of stranded colorwork makes a big splash on this rusty orange baby romper. All of the colorwork is on the kangaroo pocket that is attached to the front of the romper. I really like this aspect of the design because it keeps the rest of the knitting simple. It would also be easy to adapt to make other adorable animals.

Designer: DROPS Design

Yarn: Garnstudio DROPS Alpaca (Sport Weight #2)

Click here for the free knitting pattern!

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Truly Wooly

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I love seeing all of these adorable knitted baby onesies & rompers being modeled by all of these impossibly cute babies. Even though this model looks like he may have woken up on the wrong side of the crib, he is still so precious. The textured stitch pattern of his fashionable onesie is created using just knit and purl stitches.

Designer: DROPS Design

Yarn: Garnstudio DROPS Merino Extra Fine (DK Weight #3)

Click here for the free knitting pattern!

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Ready to Play Romper

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The layering potential of short sleeve rompers is excellent for those days when you’re not sure what the weather will do next. I also like the extra layer of protection between the diaper and the handmade object that took hours and hours to make, ya know, just in case of blow outs. This adorable romper is made using stockinette, rib and seed stitches along with cables.

Designer: DROPS Design

Yarn: Garnstudio DROPS Merino Extra Fine (DK Weight #3)

Click here for the free knitting pattern!

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Rhino Romper

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You know that really colorful variegated yarn that’s been in your stash since the dawn of time because you’re just not sure what to do with it? Here’s the sign you’ve been waiting for: use it to make this bright and cheery baby romper! Only a baby could pull off orange stripes with blue accents so effortlessly.

Designer: Rhino Knits

Yarn: Debbie Bliss Cashmerino Aran (Aran Weight #4)

Click here for the free knitting pattern!

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Rudolph

25 Adorable Knitted Baby Onesies & Rompers to Make (10)

I know that Christmas is over but there’s always next year for this festive Rudolph baby romper! Or you could use this pattern as a jumping off point and choose a different image to be the star of the show. There are many free knitting patterns for dishcloths out there with fun images that would work perfectly.

Designer: Filipa Carneiro

Yarn: Rosários 4 Merino 4 Us (Light Fingering Weight #1)

Click here for the free knitting pattern!

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Happy Days

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I’ve said it before and I’ll say it again. I just love knitted baby onesies & rompers that have folded cuffs. They’re so practical and, honestly, they’re just so cute too. Plus, just look at how happy the adorable baby model in the photo is to be wearing this cozy onesie! The pattern calls for stockinette, garter, and rib stitches.

Designer: DROPS Design

Yarn: Garnstudio DROPS Merino Extra Fine (DK Weight #3)

Click here for the free knitting pattern!

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Simply Sweet

25 Adorable Knitted Baby Onesies & Rompers to Make (12)

A creamy white color and a touch of lacework transforms a basic baby romper into something really fancy and fun. The Simply Sweet onesie is as pretty as a picture and it’s absolutely perfect for special occasions and photo shoots. I especially love the all over ribbing because it is nice and stretchy and it will grow with the baby.

Designer: DROPS Design

Yarn: Garnstudio DROPS Baby Merino (Sport Weight #2)

Click here for the free knitting pattern!

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Knit Cable Baby Romper

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Add a hood and a comically large faux fur pom pom to a baby romper and it almost looks like a snowsuit! The Knit Cable Baby Romper stands out from the crowd with large cable detailing running vertically down the front and a punchy ombre purple color scheme. Aside from the cablework, it’s all garter stitch.

Designer: Annanitato Lolo

Yarn: Red Heart Comfort Sport (DK Weight #3)

Click here for the free knitting pattern!

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Petit Lutin Playsuit

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How precious is this pretty red playsuit? Somehow it gets even cuter when you add the matching bonnet and socks. Free patterns for knitted baby onesies & rompers like this one are the whole package!

Designer: DROPS Design

Yarn: Garnstudio DROPS Cotton Merino (DK Weight #3)

Click here for the free knitting pattern!

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Baby Romper

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This sweetly striped baby romper is looking serene in a soft blue/ green color and a light gray. I especially love all of the buttons! The buttons along the legs are really nice to have when it comes time to change a diaper. You can knit one for the baby (or baby on the way) in your life using stockinette and rib stitches.

Designer: Cygnet Yarns Ltd.

Yarn: Cygnet Baby Pato DK (DK Weight #3)

Click here for the free knitting pattern!

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Baby Pocket Dungarees

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A tiny pocket on the front of the overall style bib in this baby dungaree design is the perfect place to store treasures like small toys and pacifiers. The practical design features a stretchy ribbed front along with stretchy ribbed straps that will grow with the baby. The rest of the onesie is knit in stockinette stitch.

Designer: Sirdar

Yarn: Sirdar Snuggly Cashmere Merino Silk DK (DK Weight #3)

Click here for the free knitting pattern!

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Playdate

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Squishy garter stitch and soft stripes are the hallmarks of the adorable Playdate baby onesie. It is knit double stranded in garter stitch using a soft alpaca sport weight yarn. The addition of the hood really amps up the coziness factor and adds an adorable dash of cuteness as well. Plus it has those rolled cuffs that I love!

Designer: DROPS Design

Yarn: Garnstudio DROPS Alpaca (Sport Weight #2)

Click here for the free knitting pattern!

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Aurora Baby Girl Romper Suit

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If your little fashionista will only dress in the best, then she absolutely needs one of these Aurora Baby Girl Romper Suits. The all over lace design adds just the right amount of fanciness. Two tiny pockets adorn the front of the legs and two little ties on the bottom of the legs help keep the pants from riding up.

Designer: Gynka Knitwear

Yarn: Garnstudio DROPS Muskat (DK Weight #3)

Click here for the free knitting pattern!

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Green Leaf

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I love all these pictures of happy babies in their knitted baby onesies & rompers, especially the ones that are accompanied by little handmade friends. This practical romper is perfect for adventurous babies who love to crawl. It has plenty of room in the knees and button closures on the shoulders that make it easy to put on and take off.

Designer: DROPS Design

Yarn: Garnstudio DROPS Alpaca (Sport Weight #2)

Click here for the free knitting pattern!

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Royal Knit Onesie

25 Adorable Knitted Baby Onesies & Rompers to Make (20)

If you are shopping for yarn online, then you can’t feel if it is going to be soft or not. But you know with a name that includes both the words “baby” and “soft” that the recommended yarn for this project is bound to be a winner. Don’t take it from me. Take it from the happy and cozy baby model!

Designer: Lorna Miser

Yarn: Red Heart Soft Baby Steps (Worsted Weight #4)

Click here for the free knitting pattern!

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Cloud Baby Suit

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These free patterns for knitted baby onesies and rompers are the perfect project for your wildest and most colorful skeins of yarn. Case in point: the stunning Cloud Baby Suit. The pattern calls for stockinette stitch along with rib stitch for the fitted cuffs. It is uniquely constructed to really show off self striping yarns.

Designer: Knitter’s Kitchen Designs

Yarn: Lang Yarns Cloud (Aran Weight #4)

Click here for the free knitting pattern!

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Wilson Onesie

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How precious is this Wilson Onesie from we are knitters? I absolutely love the way that the straps cross in the back. Everything is knit flat in one piece except for the straps which are knit separately and then sewn on. The pattern calls for the pretty and textured moss stitch along with rib stitch for the edges.

Designer: we are knitters

Yarn: we are knitters The Petite Wool (Aran Weight #4)

Click here for the free knitting pattern!

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Baby Giraffe Onesie

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Raise your hand if you love stranded colorwork. If your hand is in the air, then this is the pattern for you! The Baby Giraffe Onesie uses yellow and orange yarn to perfectly replicate the unique spots of a giraffe. It is such a whimsical and playful design that’s perfectly complemented by the matching knitted giraffe stuffed animals.

Designer: Mad Monkey Knits

Yarn: Sublime Yarns Baby Cashmere Merino Silk DK (DK Weight #3)

Click here for the free knitting pattern!

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Baby Bloomers

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I can’t decide what’s cuter: this pretty pale pink romper by itself or the combination with the frilly white undershirt. However you decide to style it, this precious onesie is sure to impress. I especially love the cablework detailing on the front and the ribbing along the leg holes. Other than those two elements, it is knit entirely in stockinette stitch.

Designer: Bergère de France

Yarn: Bergère de France Calinou (Fingering Weight #1)

Click here for the free knitting pattern!

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First Impression

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Make a good first impression with this impossibly sweet baby onesie. You can see from the lines of stitchwork along the sleeves that this unique onesie is constructed sideways. There is also a very handy button front that gives you quick and easy access for diaper changes. It is knit in garter stitch along with a delicate scalloped trim.

Designer: DROPS Design

Yarn: Garnstudio DROPS Baby Merino (Sport Weight #2)

Click here for the free knitting pattern!

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Knit Soft Baby ROMPER / Onesie / Jumpsuit

Cuteness overload! Did you find the knitted baby onesies and rompers you have been searching for? We would love to hear from you in the comments. Let us know which of these designs was your favorite!

Don’t forget, sharing is caring! Send this free knitting pattern round-up to all your knitting friends so they can join in on the fun too! Bookmark this page or save the link to your Pinterest board for amazing knitting patterns.

I’ll see you next week for another free knitting pattern round-up. Make sure to follow the blog so you never miss a post. <3

Happy Knitting!
Amanda

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Bloggers: Seeking designs for your upcoming roundup? I’d love for you to feature my work! You have my permission to use one photo in your roundup post as long as a link is provided back to the associated pattern page. Please let me know when your post is published so I can share it on my social media, too. Thank you!

25 Adorable Knitted Baby Onesies & Rompers to Make (2024)
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