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

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

$54.99$27.49

50% Off

Hot Deal
Textured Swim Romper -- 2.5-inch inseam
fui.swatches.fieldset_name
Textured Swim Romper -- 2.5-inch inseam

$54.99$27.49

50% Off

Hot Deal
Textured Swim Romper -- 2.5-inch inseam
fui.swatches.fieldset_name
Textured Swim Romper -- 2.5-inch inseam

$54.99$27.49

50% Off

Hot Deal
Textured Swim Romper -- 2.5-inch inseam
fui.swatches.fieldset_name
Textured Swim Romper -- 2.5-inch inseam

$54.99$27.49

50% Off

Hot Deal
Textured Swim Romper -- 2.5-inch inseam
fui.swatches.fieldset_name
Textured Swim Romper -- 2.5-inch inseam

$54.99$27.49

50% Off

Hot Deal
Printed Sleeveless Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Sleeveless Henley One-Piece Romper for Baby

$19.99$9.99

50% Off

Hot Deal
Printed Sleeveless Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Sleeveless Henley One-Piece Romper for Baby

$19.99$9.99

50% Off

Hot Deal
Printed Sleeveless Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Sleeveless Henley One-Piece Romper for Baby

$19.99$9.99

50% Off

Hot Deal
Unisex Snug-Fit 2-Way-Zip Printed Pajama One-Piece for Toddler & Baby
fui.swatches.fieldset_name
Unisex Snug-Fit 2-Way-Zip Printed Pajama One-Piece for Toddler & Baby

$16.99$8

53% Off

Hot Deal
Unisex Snug-Fit 2-Way-Zip Printed Pajama One-Piece for Toddler & Baby
fui.swatches.fieldset_name
Unisex Snug-Fit 2-Way-Zip Printed Pajama One-Piece for Toddler & Baby

$16.99$8

53% Off

Hot Deal
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

Hot Deal
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

Hot Deal
Printed Ribbed Henley Pocket One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Ribbed Henley Pocket One-Piece Romper for Baby

$16.99$8.49

50% Off

Hot Deal
Printed Ribbed Henley Pocket One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Ribbed Henley Pocket One-Piece Romper for Baby

$16.99$8.49

50% Off

Hot Deal
Printed Ribbed Henley Pocket One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Ribbed Henley Pocket One-Piece Romper for Baby

$16.99$8.49

50% Off

Hot Deal
Printed Ribbed Henley Pocket One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Ribbed Henley Pocket One-Piece Romper for Baby

$16.99$8.49

50% Off

Hot Deal
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

Hot Deal
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

Hot Deal
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$17.49

50% Off

Hot Deal
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$17.49

50% Off

Hot Deal
Textured Swim Romper -- 2.5-inch inseam
fui.swatches.fieldset_name
Textured Swim Romper -- 2.5-inch inseam

$54.99$27.49

50% Off

Hot Deal
Airy Smocked-Top Jumpsuit
fui.swatches.fieldset_name
Airy Smocked-Top Jumpsuit

$44.99$22.49

50% Off

Hot Deal
Airy Smocked Jumpsuit
fui.swatches.fieldset_name
Airy Smocked Jumpsuit

$44.99$22.49

50% Off

Hot Deal
Long-Sleeve Pointelle Henley Pajama Romper
fui.swatches.fieldset_name
Long-Sleeve Pointelle Henley Pajama Romper

$39.99$9.99

75% Off

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

$19.99$9.99

50% Off

Hot Deal
Sleeveless Double-Weave Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Double-Weave Henley One-Piece Romper for Baby

$19.99$9.99

50% Off

Hot Deal
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

Hot Deal
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

Hot Deal
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.
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.
Sleeveless Double-Weave One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Double-Weave One-Piece Romper for Baby

$26.99$13.49

50% Off

Hot Deal
Sleeveless Embroidered Sweater One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Embroidered Sweater One-Piece Romper for Baby

$29.99$17.99

40% Off

Hot Deal
Embroidered Chambray One-Piece Romper for Baby
fui.swatches.fieldset_name
Embroidered Chambray One-Piece Romper for Baby

$29.99$17.99

40% Off

Hot Deal
Ruffle-Trim Jean One-Piece Romper for Baby
fui.swatches.fieldset_name
Ruffle-Trim Jean One-Piece Romper for Baby

$24.99$14.99

40% Off

Hot Deal
Disney© Dumbo Sweater-Knit Romper for Baby
fui.swatches.fieldset_name
Disney© Dumbo Sweater-Knit Romper for Baby

$39.99

Sleeveless French-Terry Jumpsuit for Baby
fui.swatches.fieldset_name
Sleeveless French-Terry Jumpsuit for Baby

$24.99$8.99

64% Off

Clearance: Price as marked.
Disney© Dumbo Sleeveless Romper for Baby
fui.swatches.fieldset_name
Disney© Dumbo Sleeveless Romper for Baby

$24.99

Short-Sleeve Sweater-Knit One-Piece Romper for Baby
fui.swatches.fieldset_name
Short-Sleeve Sweater-Knit One-Piece Romper for Baby

$34.99$20.99

40% Off

Hot Deal
Towel-Terry Collared One-Piece Romper for Baby
fui.swatches.fieldset_name
Towel-Terry Collared One-Piece Romper for Baby

$22.99$13.79

40% Off

Hot Deal
Long-Sleeve Fleece One-Piece Romper for Baby
fui.swatches.fieldset_name
Long-Sleeve Fleece One-Piece Romper for Baby

$16.99$7.99

53% Off

Clearance: Price as marked.
Long-Sleeve Fleece One-Piece Romper for Baby
fui.swatches.fieldset_name
Long-Sleeve Fleece One-Piece Romper for Baby

$16.99$4.49

74% Off

Clearance: Price as marked.
2-Way-Zip Sleep & Play Footed One-Piece 3-Pack for Baby
fui.swatches.fieldset_name
2-Way-Zip Sleep & Play Footed One-Piece 3-Pack for Baby

$44.99$26.99

40% Off

Hot Deal
Unisex Caterpillar Print Sleep & Play 2-Way Zip Footed One-Piece for Baby
fui.swatches.fieldset_name
Unisex Caterpillar Print Sleep & Play 2-Way Zip Footed One-Piece for Baby

$14.99$9

40% Off

Hot Deal
Ribbed 2-Way-Zip Sleep & Play Footed One-Piece for Baby
fui.swatches.fieldset_name
Ribbed 2-Way-Zip Sleep & Play Footed One-Piece for Baby

$14.99$9

40% Off

Hot Deal
Disney© Hooded Fleece One-Piece Romper for Baby
fui.swatches.fieldset_name
Disney© Hooded Fleece One-Piece Romper for Baby

$24.99

Short-Sleeve Ribbed Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Short-Sleeve Ribbed Henley One-Piece Romper for Baby

$16.99$8.49

50% Off

Hot Deal
Button-Front Linen-Blend Cami Jumpsuit
fui.swatches.fieldset_name
Button-Front Linen-Blend Cami Jumpsuit

$49.99$7.47

85% Off

Clearance: Final sale. No returns or exchanges.
Long-Sleeve Fleece One-Piece Romper 2-Pack for Baby
fui.swatches.fieldset_name
Long-Sleeve Fleece One-Piece Romper 2-Pack for Baby

$39.99$9.99

75% Off

Clearance: Price as marked.
SoSoft Ruffled-Shoulder Sweater One-Piece for Baby
fui.swatches.fieldset_name
SoSoft Ruffled-Shoulder Sweater One-Piece for Baby

$34.99$8.99

74% Off

Clearance: Price as marked.
Printed Long-Sleeve Fleece One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Long-Sleeve Fleece One-Piece Romper for Baby

$16.99$8.49

50% Off

Clearance: Price as marked.
Button-Front Linen-Blend Cami Jumpsuit
fui.swatches.fieldset_name
Button-Front Linen-Blend Cami Jumpsuit

$49.99$7.47

85% Off

Clearance: Final sale. No returns or exchanges.

54 of 54 items

ONESIE ROMPERS


Discover the ultimate in comfort and style with our collection of onesie rompers, designed for effortless wear and versatility. Perfect for lounging at home or stepping out for casual outings, these all-in-one garments combine the ease of a dress with the practicality of shorts. Crafted from soft, breathable fabrics, onesie rompers provide a cozy fit that moves with you, making them a go-to choice for any occasion.


Our onesie rompers feature a variety of styles, including short sleeves, sleeveless options, and adjustable straps, allowing you to find the perfect fit for any season. With a range of colors and patterns, these rompers can easily be dressed up or down, making them a versatile addition to your wardrobe. Whether you prefer bold prints or classic solids, there's a romper to match your personal style.


Designed with convenience in mind, many onesie rompers come with functional details such as pockets and easy closures, ensuring you stay comfortable and stylish throughout the day. The relaxed fit allows for easy movement, making them ideal for everything from running errands to enjoying a weekend getaway. Pair them with sandals for a laid-back look or dress them up with accessories for a night out.


Embrace the effortless chic of onesie rompers and elevate your casual wardrobe. These versatile pieces are perfect for layering with jackets or cardigans during cooler months, while still being lightweight enough for warm weather. With their unique blend of comfort and style, onesie rompers are a must-have for anyone looking to simplify their outfit choices without sacrificing fashion.