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.

447 items
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    Shade & Shore Swimsuit Top (view 2)Shade & Shore Swimsuit Top (view 1)
    View Product: Shade & Shore Swimsuit Top

    Shade & Shore

    Swimsuit Top
    Size 4X Plus
    $16.99
    46% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)New With Tags
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size 4X Plus
    $40.99
    19% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size 4X Plus
    $28.99
    43% off estimated retail
    Bleu Rod Beattie Swimsuit Bottoms (view 2)Bleu Rod Beattie Swimsuit Bottoms (view 1)New With Tags
    View Product: Bleu Rod Beattie Swimsuit Bottoms

    Bleu Rod Beattie

    Swimsuit Bottoms
    Size 0
    $13.99
    54% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Torrid Swimsuit Bottoms (view 2)Torrid Swimsuit Bottoms (view 1)
    View Product: Torrid Swimsuit Bottoms

    Torrid

    Swimsuit Bottoms
    Size 4X Plus
    $19.99
    60% off estimated retail
    Unbranded One Piece Swimsuit (view 2)Unbranded One Piece Swimsuit (view 1)
    View Product: Unbranded One Piece Swimsuit

    Unbranded

    One Piece Swimsuit
    Size 4X Plus
    $17.99
    52% off estimated retail
    Venus Swimsuit Top (view 2)Venus Swimsuit Top (view 1)
    View Product: Venus Swimsuit Top

    Venus

    Swimsuit Top
    Size 0
    $8.99
    52% off estimated retail
    ASOS Two Piece Swimsuit (view 2)ASOS Two Piece Swimsuit (view 1)
    View Product: ASOS Two Piece Swimsuit

    ASOS

    Two Piece Swimsuit
    Size 0
    $20.99
    34% off estimated retail
    Cocoship Swimsuit Bottoms (view 2)Cocoship Swimsuit Bottoms (view 1)
    View Product: Cocoship Swimsuit Bottoms

    Cocoship

    Swimsuit Bottoms
    Size 4X Plus
    $11.99
    36% off estimated retail
    Ella Mae Swimsuit Bottoms (view 2)Ella Mae Swimsuit Bottoms (view 1)
    View Product: Ella Mae Swimsuit Bottoms

    Ella Mae

    Swimsuit Bottoms
    Size 4X Plus
    $36.99
    58% off estimated retail
    Adidas One Piece Swimsuit (view 2)Adidas One Piece Swimsuit (view 1)New With Tags
    View Product: Adidas One Piece Swimsuit

    Adidas

    One Piece Swimsuit
    Size 4X Plus
    $18.99
    52% off estimated retail
    Eddie Bauer Board Shorts (view 2)Eddie Bauer Board Shorts (view 1)
    View Product: Eddie Bauer Board Shorts

    Eddie Bauer

    Board Shorts
    Size 0
    $14.99
    65% off estimated retail
    Torrid One Piece Swimsuit (view 2)Torrid One Piece Swimsuit (view 1)
    View Product: Torrid One Piece Swimsuit

    Torrid

    One Piece Swimsuit
    Size 4X Plus
    $36.99
    51% off estimated retail
    Maui Rippers Board Shorts (view 2)Maui Rippers Board Shorts (view 1)
    View Product: Maui Rippers Board Shorts

    Maui Rippers

    Board Shorts
    Size 0
    $16.99
    55% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 4X Plus
    $14.99
    40% off estimated retail
    Malibu Skye Swimsuit Bottoms (view 2)Malibu Skye Swimsuit Bottoms (view 1)
    View Product: Malibu Skye Swimsuit Bottoms

    Malibu Skye

    Swimsuit Bottoms
    Size 0
    $15.99
    36% 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
    Shein Board Shorts (view 2)Shein Board Shorts (view 1)
    View Product: Shein Board Shorts

    Shein

    Board Shorts
    Size 4X Plus
    $9.99
    37% 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 4X Plus
    $13.99
    44% off estimated retail
    Lands' End One Piece Swimsuit (view 2)Lands' End One Piece Swimsuit (view 1)Rare Find
    View Product: Lands' End One Piece Swimsuit

    Lands' End

    One Piece Swimsuit
    Size 0
    $27.99
    70% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 4X Plus
    $14.99
    40% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 4X Plus
    $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 4X Plus
    $11.99
    52% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 4X Plus
    $10.99
    56% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 4X Plus
    $10.99
    56% off estimated retail
    Shein One Piece Swimsuit (view 2)Shein One Piece Swimsuit (view 1)
    View Product: Shein One Piece Swimsuit

    Shein

    One Piece Swimsuit
    Size 4X Plus
    $11.99
    50% off estimated retail
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 4X Plus
    $10.99
    31% off estimated retail
    PrettyLittleThing Swimsuit Top (view 2)PrettyLittleThing Swimsuit Top (view 1)New With Tags
    View Product: PrettyLittleThing Swimsuit Top

    PrettyLittleThing

    Swimsuit Top
    Size 0
    $12.99
    59% off estimated retail
    Tori Richard Board Shorts (view 2)Tori Richard Board Shorts (view 1)
    View Product: Tori Richard Board Shorts

    Tori Richard

    Board Shorts
    Size 0
    $14.99
    70% off estimated retail
    H&M One Piece Swimsuit (view 2)H&M One Piece Swimsuit (view 1)New With Tags
    View Product: H&M One Piece Swimsuit

    H&M

    One Piece Swimsuit
    Size 4X Plus
    Shein Two Piece Swimsuit (view 2)Shein Two Piece Swimsuit (view 1)
    View Product: Shein Two Piece Swimsuit

    Shein

    Two Piece Swimsuit
    Size 4X Plus
    $9.99 $7.99 20% off with code THANKU
    58% off estimated retail
    Shein Swimsuit Cover Up (view 2)Shein Swimsuit Cover Up (view 1)
    View Product: Shein Swimsuit Cover Up

    Shein

    Swimsuit Cover Up
    Size 4X Plus
    Shein Two Piece Swimsuit (view 2)Shein Two Piece Swimsuit (view 1)
    View Product: Shein Two Piece Swimsuit

    Shein

    Two Piece Swimsuit
    Size 4X Plus
    $8.99 $7.19 20% off with code THANKU
    62% off estimated retail
    Shein Swimsuit Cover Up (view 2)Shein Swimsuit Cover Up (view 1)
    View Product: Shein Swimsuit Cover Up

    Shein

    Swimsuit Cover Up
    Size 4X Plus
    Torrid Swimsuit Bottoms (view 2)Torrid Swimsuit Bottoms (view 1)
    View Product: Torrid Swimsuit Bottoms

    Torrid

    Swimsuit Bottoms
    Size 4X Plus
    Torrid Swimsuit Bottoms (view 2)Torrid Swimsuit Bottoms (view 1)
    View Product: Torrid Swimsuit Bottoms

    Torrid

    Swimsuit Bottoms
    Size 4X Plus
    Shein Swimsuit Top (view 2)Shein Swimsuit Top (view 1)
    View Product: Shein Swimsuit Top

    Shein

    Swimsuit Top
    Size 4X Plus
    $9.99 $7.99 20% off with code THANKU
    37% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size 4X Plus
    $23.99
    59% off estimated retail

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