10 Knit Baby Onesie Patterns

Onesies are one-piece outfits that are perfect for babies. Knit baby onesie patterns usually have buttons for easy removal. These outfits make it easier to dress the baby and change them quickly. They are typically loose-fitting and have plenty of room for the diaper.

Knit Baby Onesie Patterns

Below is a list of 10 super cute baby onesie knitting patterns. We have included patterns for beginners and advanced knitters. And some patterns can even be made for toddlers.

1. Maple Baby Romper Knitting Pattern by Agasalhosbugalhos

Use this knit baby onesie pattern to make countless baby overalls. You will use this pattern again and again. The onesie makes a great baby shower gift.

This advanced-beginner knitting pattern includes step-by-step instructions. The onesie is worked with raglan increases from the top down. It is knitted flat to the crotch.

You can choose if you want to knit the sleeves and legs flat or in the round. This knitting tutorial includes sizes: 0 through 24 months.

Maple Baby Romper Knitting Pattern by Agasalhosbugalhos

Find the Pattern by agasalhosbugalhos HERE

2. Red Heart Royal Knit Baby Onesie Pattern from Yarnspirations

Knit this striped onesie for your baby girl or boy. Have fun and make a few of these in different colours.

This free knit baby onesie pattern is for size 0-3 months. There are buttons down the front to make it easier for quick changes.

Red Heart Royal Knit Baby Onesie Pattern from Yarnspirations

Find the Pattern from Yarnspirations HERE

3. Ribbed Baby Onesie Knitting Pattern by miniKnitting

This baby onesie pattern has a simple, classic feel. You can use this pattern for a boy or a girl. And if you are not sure what the gender is going to be, make it a soft neutral colour. This way, you cannot go wrong.

We would recommend this pattern for an advanced beginner. It is knitted from the top down. You get to choose if you want to put the neckline closure on the front or the back. It includes instructions for sizes newborn to 3T.

Ribbed Baby Onesie Knitting Pattern by miniKnitting

Find the Pattern by miniKnitting HERE

4. Baby Romper Knitting Pattern by MekaruDesigns

Both boys and girls will look adorable wearing this cosy onesie. The outfit is worked from the top down. The pattern includes an optional hood that turns this onesie into the perfect winter jumper.

The pattern includes full step-by-step instructions. There are also videos that will help you through the project. This pattern includes sizes 0-1 month, 1-3 months, 3-6 months, 6-9 months, 9-12 months, 1-1 1/2 years, 1 1/2-2 years, 2-3 years, and 3-4 years.

Baby Romper Knitting Pattern by MekaruDesigns

Find the Pattern by MekaruDesigns HERE

5. Baby Girls Knitted Onesie Pattern by mimiKnitting

If you are looking for a girly onesie pattern, this one is beautiful. The romper has a lot of intricate details and a ruffle.

This downloadable knitting pattern includes a lot of photos and video instructions. There are sizes from newborn to 2T.

Baby Girls Knitted Onesie Pattern by mimiKnitting

Find the Pattern by mimiKnitting HERE

6. Baby Romper Knitting Pattern by FleetingandFinite

The Wesley Romper knit baby onesie pattern is beginner-friendly. This cute one-piece outfit would work great for a boy or a girl. It has contrasting hems, slip-stitch sleeve details, and easy access buttons

Included with this pattern is a photo tutorial for the purl ridge hemming. The pattern is for sizes newborn, 3 months, 6 months, 9 months, 12 months and 18 months.

Baby Romper Knitting Pattern by FleetingandFinite

Find the Pattern by FleetingandFinite HERE

7. Knitted Onesie Pattern from Creativa Atelier

You can use this free knit baby onesie pattern to make a cute, comfortable outfit for winter. This onesie makes it easy to get your baby in and out of the romper.

To knit this onesie you will need 3 balls of yarn, 4 mm needles and 8 wood buttons. The pattern is for a newborn.

Knitted Onesie Pattern from Creativa Atelier

Find the Pattern from Creativa Atelier HERE

8. Spring Duo Baby Onesie Knitting Pattern by Agasalhosbugalhos

The Spring Duo knit baby onesie pattern comes in two versions. You get both the gender-neutral version and a cute baby girl version with ruffles

The romper is worked flat in two pieces. It uses a combination of a stocking stitch and a decorative rice/seed stitch. It incorporates a ribbed stitch in the back waist and leg openings. The pattern includes sizes 0-1 months, 1-3 months, 3-6 months, 6-9 months, 9-12 months, 12-18 months, and 18-24 months.

Spring Duo Baby Onesie Knitting Pattern by Agasalhosbugalhos

Find the Pattern by agasalhosbugalhos HERE

9. Onesie Baby Romper Knitting Pattern by SimplySycamore

Here is an adorable baby onesie that can be completed by an advanced beginner. This cute outfit proves that a great pattern does not have to be difficult to make.

Included are sizes newborn, sitter, little movers (9-12 months), and the adventurer (18 months – toddler). The knit baby onesie pattern is worked in the round with increases and decreases.

Onesie Baby Romper Knitting Pattern by SimplySycamore

Find the Pattern by SimplySycamore HERE

10. Tiriltunge Newborn Knitted Onesie Pattern by Shja

This lovely knit baby onesie pattern has a lot of detail. The onesie was designed to keep a baby warm and comfortable. Make one onesie for the summer months using a silk/alpaca blend and one for winter using warm merino.

Since this pattern is very detailed, we would recommend it for an intermediate to advanced knitter. The pattern includes a chart, clear instructions, and photos. It is knit in one piece from the top down using ragland increase.

The sleeves are knit on double pointed needles. It includes sizes premature, 0-3 months, 3-6 months, 9-12 months and 18-24 months.

Tiriltunge Newborn Knitted Onesie Pattern by Shja

Find the Pattern by Shja HERE

IF YOU HAVE A BABY ON THE WAY OR KNOW SOMEONE THAT IS EXPECTING. MAKE ONE OF THESE KNIT BABY ONESIE PATTERNS. 

Babies are precious and fun to be around. But they can be difficult to dress. If you are looking for outfits that are cute and quick to change, a onesie may be the answer.

For more baby item patterns, you may also check Newborn Baby Cardigan Knitting Pattern, Princess Crown Knitting Pattern, Crochet Baby Booties and Crochet Diaper covers.

All babies look cute in onesies. There is no exception. That is what makes the knit baby onesie pattern the perfect baby shower gift.