Skip to top navigationSkip to shopping bagSkip to main contentSkip to product filtersSkip to footer links

Open & shop with your new Encore Credit Card & get an extra 30% off* your first purchase at Old Navy APPLY NOW

Onesie Rompers

48 items
Textured Swim Romper -- 2.5-inch inseam
fui.swatches.fieldset_name
Textured Swim Romper -- 2.5-inch inseam

$54.99$32.99

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Textured Swim Romper -- 2.5-inch inseam
fui.swatches.fieldset_name
Textured Swim Romper -- 2.5-inch inseam

$54.99$32.99

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Textured Swim Romper -- 2.5-inch inseam
fui.swatches.fieldset_name
Textured Swim Romper -- 2.5-inch inseam

$54.99$32.99

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Textured Swim Romper -- 2.5-inch inseam
fui.swatches.fieldset_name
Textured Swim Romper -- 2.5-inch inseam

$54.99$32.99

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Textured Swim Romper -- 2.5-inch inseam
fui.swatches.fieldset_name
Textured Swim Romper -- 2.5-inch inseam

$54.99$32.99

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Sleeveless Tie-Strap One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Tie-Strap One-Piece Romper for Baby

$16.99$8.49

50% Off

Toddler & Baby Sale!
Sleeveless Tie-Strap One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Tie-Strap One-Piece Romper for Baby

$16.99$8.49

50% Off

Toddler & Baby Sale!
Sleeveless Tie-Strap One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Tie-Strap One-Piece Romper for Baby

$16.99$8.49

50% Off

Toddler & Baby Sale!
Printed Sleeveless Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Sleeveless Henley One-Piece Romper for Baby

$19.99$12

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Printed Sleeveless Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Sleeveless Henley One-Piece Romper for Baby

$19.99$12

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Printed Sleeveless Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Sleeveless Henley One-Piece Romper for Baby

$19.99$12

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Sleeveless Double-Weave Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Double-Weave Henley One-Piece Romper for Baby

$19.99$10

50% Off

Toddler & Baby Sale!
Sleeveless Double-Weave Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Double-Weave Henley One-Piece Romper for Baby

$19.99$10

50% Off

Toddler & Baby Sale!
Sleeveless Double-Weave Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Double-Weave Henley One-Piece Romper for Baby

$19.99$10

50% Off

Toddler & Baby Sale!
Sleeveless Double-Weave Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Double-Weave Henley One-Piece Romper for Baby

$19.99$10

50% Off

Toddler & Baby Sale!
Sleeveless Double-Weave Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Double-Weave Henley One-Piece Romper for Baby

$19.99$10

50% Off

Toddler & Baby Sale!
Tie-Strap Graphic One-Piece Romper for Baby
fui.swatches.fieldset_name
Tie-Strap Graphic One-Piece Romper for Baby

$16.99$8.49

50% Off

Toddler & Baby Sale!
Tie-Strap Graphic One-Piece Romper for Baby
fui.swatches.fieldset_name
Tie-Strap Graphic One-Piece Romper for Baby

$16.99$8.49

50% Off

Toddler & Baby Sale!
Printed Ribbed Henley Pocket One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Ribbed Henley Pocket One-Piece Romper for Baby

$16.99$8

53% Off

Toddler & Baby Sale!
Printed Ribbed Henley Pocket One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Ribbed Henley Pocket One-Piece Romper for Baby

$16.99$8

53% Off

Toddler & Baby Sale!
Printed Ribbed Henley Pocket One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Ribbed Henley Pocket One-Piece Romper for Baby

$16.99$8

53% Off

Toddler & Baby Sale!
Textured Swim Romper -- 2.5-inch inseam
fui.swatches.fieldset_name
Textured Swim Romper -- 2.5-inch inseam

$54.99$32.99

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Printed Zip-Front Rashguard Romper Swimsuit for Toddler & Baby
fui.swatches.fieldset_name
Printed Zip-Front Rashguard Romper Swimsuit for Toddler & Baby

$29.99$17.99

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Printed Zip-Front Rashguard Romper Swimsuit for Toddler & Baby
fui.swatches.fieldset_name
Printed Zip-Front Rashguard Romper Swimsuit for Toddler & Baby

$29.99$17.99

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Short-Sleeve Ribbed Pocket One-Piece Romper 2-Pack for Baby
fui.swatches.fieldset_name
Short-Sleeve Ribbed Pocket One-Piece Romper 2-Pack for Baby

$34.99$20

43% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Short-Sleeve Ribbed Pocket One-Piece Romper 2-Pack for Baby
fui.swatches.fieldset_name
Short-Sleeve Ribbed Pocket One-Piece Romper 2-Pack for Baby

$34.99$20

43% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Short-Sleeve Romper 2-Pack for Girls
fui.swatches.fieldset_name
Short-Sleeve Romper 2-Pack for Girls

$39.99$23.99

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Sleeveless Sweater-Knit Romper for Baby
fui.swatches.fieldset_name
Sleeveless Sweater-Knit Romper for Baby

$29.99$7.49

75% Off

Clearance: Price as marked.
Disney© Dumbo Sweater-Knit One-Piece Romper for Baby
fui.swatches.fieldset_name
Disney© Dumbo Sweater-Knit One-Piece Romper for Baby

$39.99$19.99

50% Off

Toddler & Baby Sale!
Disney© Dumbo Sweater-Knit Romper for Baby
fui.swatches.fieldset_name
Disney© Dumbo Sweater-Knit Romper for Baby

$39.99$19.99

50% Off

Toddler & Baby Sale!
Sleeveless Embroidered Sweater One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Embroidered Sweater One-Piece Romper for Baby

$29.99$7.49

75% Off

Clearance: Price as marked.
Sleeveless Double-Weave One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Double-Weave One-Piece Romper for Baby

$26.99$7.99

70% Off

Clearance: Price as marked.
Embroidered Chambray One-Piece Romper for Baby
fui.swatches.fieldset_name
Embroidered Chambray One-Piece Romper for Baby

$29.99$8.99

70% Off

Clearance: Price as marked.
Ruffle-Trim Jean One-Piece Romper for Baby
fui.swatches.fieldset_name
Ruffle-Trim Jean One-Piece Romper for Baby

$24.99$15

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Long-Sleeve Critter Velvet One-Piece Romper for Baby
fui.swatches.fieldset_name
Long-Sleeve Critter Velvet One-Piece Romper for Baby

$32.99$4.97

85% Off

Clearance: Final sale. No returns or exchanges.
Collared Denim One-Piece Romper for Baby
fui.swatches.fieldset_name
Collared Denim One-Piece Romper for Baby

$29.99

Card Perk! 50% Off Original Price with Code: FIFTY
Collared Plaid One-Piece Romper for Baby
fui.swatches.fieldset_name
Collared Plaid One-Piece Romper for Baby

$26.99

Card Perk! 50% Off Original Price with Code: FIFTY
Sleeveless Sweater-Knit One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Sweater-Knit One-Piece Romper for Baby

$32.99

Today Only! 50% Off Original Price at Checkout
Star Wars™ Hooded Grogu Fleece One-Piece Romper for Baby
fui.swatches.fieldset_name
Star Wars™ Hooded Grogu Fleece One-Piece Romper for Baby

$39.99

Card Perk! 50% Off Original Price with Code: FIFTY
Sleeveless French-Terry Jumpsuit for Baby
fui.swatches.fieldset_name
Sleeveless French-Terry Jumpsuit for Baby

$24.99$6.49

74% Off

Clearance: Price as marked.
Star Wars™ Grogu Sleeveless Sweater-Knit One-Piece Romper for Baby
fui.swatches.fieldset_name
Star Wars™ Grogu Sleeveless Sweater-Knit One-Piece Romper for Baby

$39.99

Card Perk! 50% Off Original Price with Code: FIFTY
Short-Sleeve Sweater-Knit One-Piece Romper for Baby
fui.swatches.fieldset_name
Short-Sleeve Sweater-Knit One-Piece Romper for Baby

$34.99$18

49% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Disney© Dumbo Unisex Sleeveless Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Disney© Dumbo Unisex Sleeveless Henley One-Piece Romper for Baby

$24.99$12.49

50% Off

Toddler & Baby Sale!
Unisex Holiday Tree Costume Hooded One-Piece Romper for Baby
fui.swatches.fieldset_name
Unisex Holiday Tree Costume Hooded One-Piece Romper for Baby

$32.99$4.97

85% Off

Clearance: Final sale. No returns or exchanges.
Short-Sleeve Ribbed Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Short-Sleeve Ribbed Henley One-Piece Romper for Baby

$16.99$8

53% Off

Toddler & Baby Sale!
Disney© Dumbo Sleeveless Romper for Baby
fui.swatches.fieldset_name
Disney© Dumbo Sleeveless Romper for Baby

$24.99$12.49

50% Off

Toddler & Baby Sale!
Long-Sleeve Fleece One-Piece Romper for Baby
fui.swatches.fieldset_name
Long-Sleeve Fleece One-Piece Romper for Baby

$16.99$4.47

74% Off

Clearance: Price as marked.
Long-Sleeve Pointelle Henley Pajama Romper
fui.swatches.fieldset_name
Long-Sleeve Pointelle Henley Pajama Romper

$39.99$9.97

75% Off

Clearance: Price as marked.

48 of 48 items

ONESIE ROMPERS


Discover the ultimate in comfort and style with our collection of onesie rompers, designed for effortless wear and playful versatility. Perfect for lounging at home or stepping out for casual outings, these all-in-one garments combine the ease of a romper with the cozy feel of a onesie. Crafted from soft, breathable fabrics, they provide all-day comfort while ensuring you look chic and put-together.


Our onesie rompers feature a variety of styles, including short and long sleeves, allowing you to choose the perfect fit for any season. With thoughtful design elements such as adjustable straps, elastic waistbands, and convenient pockets, these rompers are as functional as they are fashionable. Available in a range of colors and patterns, you can easily express your personal style while enjoying the comfort of this versatile piece.


Whether you're dressing up for a casual brunch or lounging around the house, onesie rompers offer endless styling possibilities. Pair them with sneakers for a laid-back look, or dress them up with accessories for a fun night out. Their easy-to-wear design makes them a go-to choice for busy days, ensuring you stay comfortable without sacrificing style.


Embrace the playful spirit of onesie rompers and elevate your wardrobe with this must-have staple. Ideal for layering or wearing solo, they transition seamlessly from day to night. Explore our collection to find the perfect onesie romper that fits your lifestyle, and enjoy the blend of comfort and style that makes every day feel special.