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Shop Women's Swimwear at up to 90% off estimated retail! thredUP has a huge selection of gently used women's swimwear. Find bikinis, one-pieces, board shorts and cover ups from brands like Seafolly, Aqua or Speedo at thredUP.

2,299 items
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    Kona Sol One Piece Swimsuit (view 2)Kona Sol One Piece Swimsuit (view 1)
    View Product: Kona Sol One Piece Swimsuit

    Kona Sol

    One Piece Swimsuit
    Size Med
    $27.99
    26% off estimated retail
    The Bikini Lab Swimsuit Top (view 2)The Bikini Lab Swimsuit Top (view 1)
    View Product: The Bikini Lab Swimsuit Top

    The Bikini Lab

    Swimsuit Top
    Size Med
    $14.99
    60% off estimated retail
    Princess Polly Swimsuit Top (view 2)Princess Polly Swimsuit Top (view 1)New With Tags
    View Product: Princess Polly Swimsuit Top

    Princess Polly

    Swimsuit Top
    Size 6
    $11.99
    52% off estimated retail
    Aerie Swimsuit Top (view 2)Aerie Swimsuit Top (view 1)Flawed Gem
    View Product: Aerie Swimsuit Top

    Aerie

    Swimsuit Top
    Size Sm
    $14.99
    40% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Aerie Swimsuit Bottoms (view 2)Aerie Swimsuit Bottoms (view 1)
    View Product: Aerie Swimsuit Bottoms

    Aerie

    Swimsuit Bottoms
    Size Med
    $10.99
    56% off estimated retail
    B2Prity One Piece Swimsuit (view 2)B2Prity One Piece Swimsuit (view 1)
    View Product: B2Prity One Piece Swimsuit

    B2Prity

    One Piece Swimsuit
    Size 2X Plus
    $21.99
    42% off estimated retail
    Urban Outfitters Swimsuit Top (view 2)Urban Outfitters Swimsuit Top (view 1)
    View Product: Urban Outfitters Swimsuit Top

    Urban Outfitters

    Swimsuit Top
    Size XS
    $16.99
    46% off estimated retail
    Assorted Brands Swimsuit Top (view 2)Assorted Brands Swimsuit Top (view 1)
    View Product: Assorted Brands Swimsuit Top

    Assorted Brands

    Swimsuit Top
    Size Med
    $11.99
    52% off estimated retail
    Shein Swimsuit Top (view 2)Shein Swimsuit Top (view 1)
    View Product: Shein Swimsuit Top

    Shein

    Swimsuit Top
    Size Lg
    $12.99
    18% off estimated retail
    Sofia by Vix Swimsuit Top (view 2)Sofia by Vix Swimsuit Top (view 1)
    View Product: Sofia by Vix Swimsuit Top

    Sofia by Vix

    Swimsuit Top
    Size Sm
    $11.99
    68% off estimated retail
    Lands' End Swimsuit Bottoms (view 2)Lands' End Swimsuit Bottoms (view 1)
    View Product: Lands' End Swimsuit Bottoms

    Lands' End

    Swimsuit Bottoms
    Size 14
    $28.99
    54% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 4X Plus
    $13.99
    44% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size Lg
    $10.99
    56% off estimated retail
    BEACHRIOT Sport Swimsuit Top (view 2)BEACHRIOT Sport Swimsuit Top (view 1)
    View Product: BEACHRIOT Sport Swimsuit Top

    BEACHRIOT Sport

    Swimsuit Top
    Size Med
    $21.99
    65% off estimated retail
    Assorted Brands Swimsuit Bottoms (view 2)Assorted Brands Swimsuit Bottoms (view 1)
    View Product: Assorted Brands Swimsuit Bottoms

    Assorted Brands

    Swimsuit Bottoms
    Size Med
    $13.99
    44% off estimated retail
    Lively Swimsuit Top (view 2)Lively Swimsuit Top (view 1)
    View Product: Lively Swimsuit Top

    Lively

    Swimsuit Top
    Size Sm
    $17.99
    64% off estimated retail
    Lively Swimsuit Bottoms (view 2)Lively Swimsuit Bottoms (view 1)
    View Product: Lively Swimsuit Bottoms

    Lively

    Swimsuit Bottoms
    Size Med
    $19.99
    64% off estimated retail
    Victoria's Secret Pink Swimsuit Bottoms (view 2)Victoria's Secret Pink Swimsuit Bottoms (view 1)New With Tags
    View Product: Victoria's Secret Pink Swimsuit Bottoms

    Victoria's Secret Pink

    Swimsuit Bottoms
    Size Lg
    $18.99
    36% off estimated retail
    Victoria's Secret Pink Swimsuit Bottoms (view 2)Victoria's Secret Pink Swimsuit Bottoms (view 1)New With Tags
    View Product: Victoria's Secret Pink Swimsuit Bottoms

    Victoria's Secret Pink

    Swimsuit Bottoms
    Size XL
    $18.99
    36% off estimated retail
    Victoria's Secret Pink Swimsuit Top (view 2)Victoria's Secret Pink Swimsuit Top (view 1)New With Tags
    View Product: Victoria's Secret Pink Swimsuit Top
    Size Med
    $18.99
    45% off estimated retail
    Victoria's Secret Pink Swimsuit Bottoms (view 2)Victoria's Secret Pink Swimsuit Bottoms (view 1)New With Tags
    View Product: Victoria's Secret Pink Swimsuit Bottoms

    Victoria's Secret Pink

    Swimsuit Bottoms
    Size XL
    $18.99
    36% off estimated retail
    Xhilaration Swimsuit Bottoms (view 2)Xhilaration Swimsuit Bottoms (view 1)
    View Product: Xhilaration Swimsuit Bottoms

    Xhilaration

    Swimsuit Bottoms
    Size XS
    $10.99
    15% off estimated retail
    Red Carter One Piece Swimsuit (view 2)Red Carter One Piece Swimsuit (view 1)
    View Product: Red Carter One Piece Swimsuit

    Red Carter

    One Piece Swimsuit
    Size 10
    $42.99
    79% off estimated retail
    Coco Rave Swimsuit Top (view 2)Coco Rave Swimsuit Top (view 1)
    View Product: Coco Rave Swimsuit Top

    Coco Rave

    Swimsuit Top
    Size Lg
    $15.99
    63% off estimated retail
    Londre One Piece Swimsuit (view 2)Londre One Piece Swimsuit (view 1)
    View Product: Londre One Piece Swimsuit

    Londre

    One Piece Swimsuit
    Size Med
    $52.99
    70% off estimated retail
    Kenneth Cole New York Swimsuit Bottoms (view 2)Kenneth Cole New York Swimsuit Bottoms (view 1)Flawed Gem
    View Product: Kenneth Cole New York Swimsuit Bottoms

    Kenneth Cole New York

    Swimsuit Bottoms
    Size Sm
    $17.99
    71% off estimated retail
    La Blanca Swimsuit Cover Up (view 2)La Blanca Swimsuit Cover Up (view 1)
    View Product: La Blanca Swimsuit Cover Up

    La Blanca

    Swimsuit Cover Up
    Size Sm
    $25.99
    54% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size Lg
    $10.99
    56% off estimated retail
    Zaful Swimsuit Top (view 2)Zaful Swimsuit Top (view 1)
    View Product: Zaful Swimsuit Top

    Zaful

    Swimsuit Top
    Size 6
    $11.99
    52% off estimated retail
    Oxide Rash Guard (view 2)Oxide Rash Guard (view 1)
    View Product: Oxide Rash Guard

    Oxide

    Rash Guard
    Size Sm
    $11.99
    36% off estimated retail
    Aerie Swimsuit Top (view 2)Aerie Swimsuit Top (view 1)
    View Product: Aerie Swimsuit Top

    Aerie

    Swimsuit Top
    Size Sm
    $10.99
    56% off estimated retail
    Robin Piccone Swimsuit Cover Up (view 2)Robin Piccone Swimsuit Cover Up (view 1)
    View Product: Robin Piccone Swimsuit Cover Up

    Robin Piccone

    Swimsuit Cover Up
    Size One size
    $33.99
    75% off estimated retail
    Vince Camuto Swimsuit Top (view 2)Vince Camuto Swimsuit Top (view 1)
    View Product: Vince Camuto Swimsuit Top

    Vince Camuto

    Swimsuit Top
    Size XS
    $31.99
    50% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 50 Plus eur
    $15.99
    48% off estimated retail
    Zaful Swimsuit Top (view 2)Zaful Swimsuit Top (view 1)
    View Product: Zaful Swimsuit Top

    Zaful

    Swimsuit Top
    Size Sm
    $9.99
    60% off estimated retail
    oasis Swimsuit Bottoms (view 2)oasis Swimsuit Bottoms (view 1)New With Tags
    View Product: oasis Swimsuit Bottoms

    oasis

    Swimsuit Bottoms
    Size XS
    $11.99
    62% off estimated retail
    Athleta Swimsuit Top (view 2)Athleta Swimsuit Top (view 1)
    View Product: Athleta Swimsuit Top

    Athleta

    Swimsuit Top
    Size Med
    $34.99
    47% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size Med
    $9.99
    64% off estimated retail
    Septangle Swimsuit Top (view 2)Septangle Swimsuit Top (view 1)
    View Product: Septangle Swimsuit Top

    Septangle

    Swimsuit Top
    Size 14
    $9.99
    43% off estimated retail
    Liz Claiborne One Piece Swimsuit (view 2)Liz Claiborne One Piece Swimsuit (view 1)
    View Product: Liz Claiborne One Piece Swimsuit

    Liz Claiborne

    One Piece Swimsuit
    Size 10
    $26.99
    55% off estimated retail
    La Blanca One Piece Swimsuit (view 2)La Blanca One Piece Swimsuit (view 1)New With Tags
    View Product: La Blanca One Piece Swimsuit

    La Blanca

    One Piece Swimsuit
    Size 8
    $50.99
    58% off estimated retail
    MICHAEL Michael Kors One Piece Swimsuit (view 2)MICHAEL Michael Kors One Piece Swimsuit (view 1)
    View Product: MICHAEL Michael Kors One Piece Swimsuit

    MICHAEL Michael Kors

    One Piece Swimsuit
    Size 10
    $83.99
    33% off estimated retail
    Old Navy One Piece Swimsuit (view 2)Old Navy One Piece Swimsuit (view 1)
    View Product: Old Navy One Piece Swimsuit

    Old Navy

    One Piece Swimsuit
    Size Med
    $18.99
    57% off estimated retail
    Victoria's Secret Swimsuit Bottoms (view 2)Victoria's Secret Swimsuit Bottoms (view 1)
    View Product: Victoria's Secret Swimsuit Bottoms

    Victoria's Secret

    Swimsuit Bottoms
    Size Med
    $6.99
    78% off estimated retail
    Victoria's Secret Swimsuit Top (view 2)Victoria's Secret Swimsuit Top (view 1)
    View Product: Victoria's Secret Swimsuit Top

    Victoria's Secret

    Swimsuit Top
    Size Med
    $5.99
    81% off estimated retail
    Sunsets Swimsuit Top (view 2)Sunsets Swimsuit Top (view 1)
    View Product: Sunsets Swimsuit Top

    Sunsets

    Swimsuit Top
    Size 4
    $11.99
    68% off estimated retail
    Victoria's Secret Swimsuit Top (view 2)Victoria's Secret Swimsuit Top (view 1)
    View Product: Victoria's Secret Swimsuit Top

    Victoria's Secret

    Swimsuit Top
    Size Lg
    $24.99
    21% off estimated retail
    Aerie Swimsuit Top (view 2)Aerie Swimsuit Top (view 1)
    View Product: Aerie Swimsuit Top

    Aerie

    Swimsuit Top
    Size Lg
    $10.99
    60% off estimated retail
    Aerie Swimsuit Bottoms (view 2)Aerie Swimsuit Bottoms (view 1)
    View Product: Aerie Swimsuit Bottoms

    Aerie

    Swimsuit Bottoms
    Size Sm
    $10.99
    56% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size Sm
    $13.99
    48% off estimated retail
    Zaful Swimsuit Bottoms (view 2)Zaful Swimsuit Bottoms (view 1)
    View Product: Zaful Swimsuit Bottoms

    Zaful

    Swimsuit Bottoms
    Size 4
    $8.99
    64% off estimated retail
    Lauren by Ralph Lauren Swimsuit Top (view 2)Lauren by Ralph Lauren Swimsuit Top (view 1)
    View Product: Lauren by Ralph Lauren Swimsuit Top
    Size 14
    $31.99
    66% off estimated retail
    Agua Bendita Swimsuit Bottoms (view 2)Agua Bendita Swimsuit Bottoms (view 1)
    View Product: Agua Bendita Swimsuit Bottoms

    Agua Bendita

    Swimsuit Bottoms
    Size Med
    $54.99
    65% off estimated retail
    Aerie Swimsuit Top (view 2)Aerie Swimsuit Top (view 1)
    View Product: Aerie Swimsuit Top

    Aerie

    Swimsuit Top
    Size Sm
    $9.99
    60% off estimated retail
    CUUP Swimsuit Bottoms (view 2)CUUP Swimsuit Bottoms (view 1)New With Tags
    View Product: CUUP Swimsuit Bottoms

    CUUP

    Swimsuit Bottoms
    Size Med
    $33.99
    63% off estimated retail
    Zaful Two Piece Swimsuit (view 2)Zaful Two Piece Swimsuit (view 1)New With Tags
    View Product: Zaful Two Piece Swimsuit

    Zaful

    Two Piece Swimsuit
    Size 6
    $18.99
    50% off estimated retail
    Victoria's Secret Swimsuit Top (view 2)Victoria's Secret Swimsuit Top (view 1)
    View Product: Victoria's Secret Swimsuit Top

    Victoria's Secret

    Swimsuit Top
    Size Med
    $11.99
    62% off estimated retail
    Diane von Furstenberg One Piece Swimsuit (view 2)Diane von Furstenberg One Piece Swimsuit (view 1)
    View Product: Diane von Furstenberg One Piece Swimsuit

    Diane von Furstenberg

    One Piece Swimsuit
    Size Lg
    $85.99
    69% off estimated retail
    Super down Swimsuit Bottoms (view 2)Super down Swimsuit Bottoms (view 1)New With Tags
    View Product: Super down Swimsuit Bottoms

    Super down

    Swimsuit Bottoms
    Size Sm
    $15.99
    63% off estimated retail
    Blair Swimsuit Top (view 2)Blair Swimsuit Top (view 1)
    View Product: Blair Swimsuit Top

    Blair

    Swimsuit Top
    Size 18 Plus
    $12.99
    31% off estimated retail
    Forever 21 Swimsuit Bottoms (view 2)Forever 21 Swimsuit Bottoms (view 1)New With Tags
    View Product: Forever 21 Swimsuit Bottoms

    Forever 21

    Swimsuit Bottoms
    Size Sm
    $13.99
    22% off estimated retail
    Ella Moss Swimsuit Top (view 2)Ella Moss Swimsuit Top (view 1)
    View Product: Ella Moss Swimsuit Top

    Ella Moss

    Swimsuit Top
    Size XS
    $26.99
    59% off estimated retail
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size Sm
    $9.99
    37% off estimated retail
    H&M Swimsuit Top (view 2)H&M Swimsuit Top (view 1)
    View Product: H&M Swimsuit Top

    H&M

    Swimsuit Top
    Size 6
    $15.99
    20% off estimated retail
    Cupshe Swimsuit Top (view 2)Cupshe Swimsuit Top (view 1)
    View Product: Cupshe Swimsuit Top

    Cupshe

    Swimsuit Top
    Size Med
    $10.99
    42% off estimated retail
    Nike Swimsuit Top (view 2)Nike Swimsuit Top (view 1)
    View Product: Nike Swimsuit Top

    Nike

    Swimsuit Top
    Size 16
    $26.99
    56% off estimated retail
    Beyond Swimsuit Top (view 2)Beyond Swimsuit Top (view 1)New With Tags
    View Product: Beyond Swimsuit Top

    Beyond

    Swimsuit Top
    Size 10
    $49.99
    65% off estimated retail
    Savage X Fenty Swimsuit Cover Up (view 2)Savage X Fenty Swimsuit Cover Up (view 1)New With Tags
    View Product: Savage X Fenty Swimsuit Cover Up

    Savage X Fenty

    Swimsuit Cover Up
    Size Sm
    $21.99
    61% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size XL
    $10.99
    64% off estimated retail
    Seekers Australia One Piece Swimsuit (view 2)Seekers Australia One Piece Swimsuit (view 1)
    View Product: Seekers Australia One Piece Swimsuit

    Seekers Australia

    One Piece Swimsuit
    Size 16
    $22.99
    58% off estimated retail
    Tory Burch Swimsuit Top (view 2)Tory Burch Swimsuit Top (view 1)New With Tags
    View Product: Tory Burch Swimsuit Top

    Tory Burch

    Swimsuit Top
    Size XL
    $44.99
    64% off estimated retail

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