thredUP LogothredUP | The Largest Online Consignment & Thrift StorethredUP
Magnifying glassZoom on item
HeartHeart icon
AccountLink to the thredUP account details
0
CartLink to your thredUP cart
Check out

Boys' Swimwear

ChevronNavigation chevron icon

Whether it's a day at the pool or the beach, your little man needs a comfortable and stylish look. At thredUP, you'll find boys' swimwear in a variety of styles, colors, and designs that he will love, and at up to 90% off estimated retail, the prices will make you happy as well.

622 items·
Sort by:
Recently DiscountedChevronNavigation chevron icon
Filtering byBoys: swimwear
    Assorted Brands Size 3-6 mo
    View Product: Assorted Brands Size 3-6 mo

    Assorted Brands

    Size 3-6 mo
    $19.99 $41

    $13.99 30% off with

    Hurley Size Newborn
    View Product: Hurley Size Newborn

    Hurley

    Size Newborn
    $21.99 $61

    $15.39 30% off with

    Unbranded Size 3-6 mo
    Price Drop
    View Product: Unbranded Size 3-6 mo

    Unbranded

    Size 3-6 mo
    $9.99 $20

    $4.99 50% off with

    REI Size X-Small youth
    View Product: REI Size X-Small youth

    REI

    Size X-Small youth
    $29.99 $77

    $20.99 30% off with

    Carter's Size 12 mo
    View Product: Carter's Size 12 mo

    Carter's

    Size 12 mo
    $12.99 $28

    $9.09 30% off with

    Hanna Andersson Size 60 cm
    Price Drop
    View Product: Hanna Andersson Size 60 cm

    Hanna Andersson

    Size 60 cm
    $13.99 $38

    $6.99 50% off with

    Skechers Size 2T
    Price Drop
    View Product: Skechers Size 2T

    Skechers

    Size 2T
    $9.99 $26

    $5.99 40% off with

    Nautica Size 3T
    Price Drop
    View Product: Nautica Size 3T

    Nautica

    Size 3T
    $12.99 $26

    $9.09 30% off with

    Unbranded Size 3-6 mo
    Price Drop
    View Product: Unbranded Size 3-6 mo

    Unbranded

    Size 3-6 mo
    $16.99 $41

    $8.49 50% off with

    Hanna Andersson Size 80 cm
    Price Drop
    View Product: Hanna Andersson Size 80 cm

    Hanna Andersson

    Size 80 cm
    $19.99 $38

    $11.99 40% off with

    Assorted Brands Size Preemie
    Price Drop
    View Product: Assorted Brands Size Preemie

    Assorted Brands

    Size Preemie
    $19.99 $41

    $11.99 40% off with

    Disney Pixar Size 12 mo
    Price Drop
    View Product: Disney Pixar Size 12 mo

    Disney Pixar

    Size 12 mo
    $11.99 $31

    $5.99 50% off with

    Hanna Andersson Size 60 cm
    View Product: Hanna Andersson Size 60 cm

    Hanna Andersson

    Size 60 cm
    $25.99 $41

    $18.19 30% off with

    Gymboree Outlet Size 6-12 mo
    Price Drop
    View Product: Gymboree Outlet Size 6-12 mo

    Gymboree Outlet

    Size 6-12 mo
    $21.99 $37

    $13.19 40% off with

    Carter's Size 12 mo
    Price Drop
    View Product: Carter's Size 12 mo

    Carter's

    Size 12 mo
    $9.99 $28

    $4.99 50% off with

    Hanna Andersson Size 70 cm
    Price Drop
    View Product: Hanna Andersson Size 70 cm

    Hanna Andersson

    Size 70 cm
    $14.99 $28

    $8.99 40% off with

    Gymboree Size 6-12 mo
    View Product: Gymboree Size 6-12 mo

    Gymboree

    Size 6-12 mo
    $10.99 $25

    $7.69 30% off with

    Assorted Brands Size 2T
    Price Drop
    View Product: Assorted Brands Size 2T

    Assorted Brands

    Size 2T
    $21.99 $41

    $10.99 50% off with

    Gymboree Size 2T
    Price Drop
    View Product: Gymboree Size 2T

    Gymboree

    Size 2T
    $10.99 $25

    $6.59 40% off with

    Assorted Brands Size 6 mo
    Price Drop
    View Product: Assorted Brands Size 6 mo

    Assorted Brands

    Size 6 mo
    $13.99 $41

    $6.99 50% off with

    Baby Gap Size 0-3 mo
    Price Drop
    View Product: Baby Gap Size 0-3 mo

    Baby Gap

    Size 0-3 mo
    $9.99 $20

    $6.99 30% off with

    Cat & Jack Size 6-9 mo
    Price Drop
    View Product: Cat & Jack Size 6-9 mo

    Cat & Jack

    Size 6-9 mo
    $14.99 $20

    $8.99 40% off with

    Unbranded Size 12-18 mo
    Price Drop
    View Product: Unbranded Size 12-18 mo

    Unbranded

    Size 12-18 mo
    $14.99 $41

    $7.49 50% off with

    Baby Gap Size 6-12 mo
    Price Drop
    View Product: Baby Gap Size 6-12 mo

    Baby Gap

    Size 6-12 mo
    $9.99 $20

    $5.99 40% off with

    Carter's Size 9 mo
    Price Drop
    View Product: Carter's Size 9 mo

    Carter's

    Size 9 mo
    $9.99 $24

    $5.99 40% off with

    Unbranded Size Small infants
    Price Drop
    View Product: Unbranded Size Small infants

    Unbranded

    Size Small infants
    $7.99 $20

    $4.79 40% off with

    Carter's Size 18 mo
    Price Drop
    View Product: Carter's Size 18 mo

    Carter's

    Size 18 mo
    $11.99 $28

    $7.19 40% off with

    Baby Gap Size 0-3 mo
    Price Drop
    View Product: Baby Gap Size 0-3 mo

    Baby Gap

    Size 0-3 mo
    $9.99 $20

    $5.99 40% off with

    Assorted Brands Size X-Small youth
    Price Drop
    View Product: Assorted Brands Size X-Small youth

    Assorted Brands

    Size X-Small youth
    $31.99 $61

    $19.19 40% off with

    Assorted Brands Size 150 cm
    Price Drop
    View Product: Assorted Brands Size 150 cm

    Assorted Brands

    Size 150 cm
    $15.99 $31

    $7.99 50% off with

    Carter's Size 12 mo
    Price Drop
    View Product: Carter's Size 12 mo

    Carter's

    Size 12 mo
    $9.99 $24

    $5.99 40% off with

    Carter's Size 18 mo
    Price Drop
    View Product: Carter's Size 18 mo

    Carter's

    Size 18 mo
    $11.99 $28

    $7.19 40% off with

    Disney Size Newborn
    Price Drop
    View Product: Disney Size Newborn

    Disney

    Size Newborn
    $13.99 $20

    $8.39 40% off with

    Carter's Size 3 mo
    Price Drop
    View Product: Carter's Size 3 mo

    Carter's

    Size 3 mo
    $9.99 $24

    $5.99 40% off with

    Floatimini Size 18 mo
    Price Drop
    View Product: Floatimini Size 18 mo

    Floatimini

    Size 18 mo
    $15.99 $51

    $11.19 30% off with

    Baby Gap Size 3-6 mo
    Price Drop
    View Product: Baby Gap Size 3-6 mo

    Baby Gap

    Size 3-6 mo
    $9.99 $20

    $5.99 40% off with

    Baby Gap Size 6 mo
    Price Drop
    View Product: Baby Gap Size 6 mo

    Baby Gap

    Size 6 mo
    $9.99 $20

    $5.99 40% off with

    Old Navy Size 12-18 mo
    Price Drop
    View Product: Old Navy Size 12-18 mo

    Old Navy

    Size 12-18 mo
    $10.99 $15

    $6.59 40% off with

    Disney Size 12 mo
    Price Drop
    View Product: Disney Size 12 mo

    Disney

    Size 12 mo
    $9.99 $20

    $4.99 50% off with

    OshKosh B'gosh Size 12 mo
    Price Drop
    View Product: OshKosh B'gosh Size 12 mo

    OshKosh B'gosh

    Size 12 mo
    $9.99 $21

    $5.99 40% off with

    UV Skinz Size 2T
    Price Drop
    View Product: UV Skinz Size 2T

    UV Skinz

    Size 2T
    $8.99 $26

    $5.39 40% off with

    Hema Size 0-3 mo
    Price Drop
    View Product: Hema Size 0-3 mo

    Hema

    Size 0-3 mo
    $9.99 $20

    $4.99 50% off with

    Baby Gap Size 0-3 mo
    Price Drop
    View Product: Baby Gap Size 0-3 mo

    Baby Gap

    Size 0-3 mo
    $6.99 $20

    $3.49 50% off with

    Koala Baby Size Newborn
    Price Drop
    View Product: Koala Baby Size Newborn

    Koala Baby

    Size Newborn
    $7.99 $20

    $3.99 50% off with

    Baby Gap Size 3-6 mo
    Price Drop
    View Product: Baby Gap Size 3-6 mo

    Baby Gap

    Size 3-6 mo
    $6.99 $20

    $3.49 50% off with

    Kitestrings Size 6-9 mo
    Price Drop
    View Product: Kitestrings Size 6-9 mo

    Kitestrings

    Size 6-9 mo
    $5.99 $34

    $2.99 50% off with

    Carter's Size 6-9 mo
    Price Drop
    View Product: Carter's Size 6-9 mo

    Carter's

    Size 6-9 mo
    $11.99 $24

    $5.99 50% off with

    Baby Gap Size 0-3 mo
    Price Drop
    View Product: Baby Gap Size 0-3 mo

    Baby Gap

    Size 0-3 mo
    $7.99 $20

    $3.99 50% off with

    Carter's Size 6 mo
    Price Drop
    View Product: Carter's Size 6 mo

    Carter's

    Size 6 mo
    $7.99 $24

    $3.99 50% off with

    Sesame Street Size 0-3 mo
    Price Drop
    View Product: Sesame Street Size 0-3 mo

    Sesame Street

    Size 0-3 mo
    $10.99 $31

    $5.49 50% off with

    Page of 13