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.

522 items
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    Assorted Brands Swimsuit Top (view 2)Assorted Brands Swimsuit Top (view 1)
    View Product: Assorted Brands Swimsuit Top

    Assorted Brands

    Swimsuit Top
    Size 1X Plus
    $15.99
    36% off estimated retail
    Kona Sol Swimsuit Top (view 2)Kona Sol Swimsuit Top (view 1)New With Tags
    View Product: Kona Sol Swimsuit Top

    Kona Sol

    Swimsuit Top
    Size 1X Plus
    $20.99
    16% off estimated retail
    Swim by Cacique Swimsuit Top (view 2)Swim by Cacique Swimsuit Top (view 1)
    View Product: Swim by Cacique Swimsuit Top

    Swim by Cacique

    Swimsuit Top
    Size 1X Plus
    $22.99
    54% 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 1X Plus
    $31.99
    37% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 1X Plus
    $12.99
    18% 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 1X Plus
    $15.99
    57% off estimated retail
    Swim by Cacique Swimsuit Top (view 2)Swim by Cacique Swimsuit Top (view 1)
    View Product: Swim by Cacique Swimsuit Top

    Swim by Cacique

    Swimsuit Top
    Size 1X Plus
    $24.99
    51% off estimated retail
    Coco Reef Swimsuit Top (view 2)Coco Reef Swimsuit Top (view 1)New With Tags
    View Product: Coco Reef Swimsuit Top

    Coco Reef

    Swimsuit Top
    Size 1X Plus
    $24.99
    51% 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
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 1X Plus
    $12.99
    48% off estimated retail
    Catalina One Piece Swimsuit (view 2)Catalina One Piece Swimsuit (view 1)
    View Product: Catalina One Piece Swimsuit

    Catalina

    One Piece Swimsuit
    Size 1X Plus
    $11.99
    36% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size 1X Plus
    $20.99
    58% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size 1X Plus
    $19.99
    60% off estimated retail
    Colada California Swimsuit Top (view 2)Colada California Swimsuit Top (view 1)
    View Product: Colada California Swimsuit Top

    Colada California

    Swimsuit Top
    Size 1X Plus
    $15.99
    15% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

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

    Free Country

    Swimsuit Bottoms
    Size 1X Plus
    $17.99
    28% 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
    Lands' End Rash Guard (view 2)Lands' End Rash Guard (view 1)
    View Product: Lands' End Rash Guard

    Lands' End

    Rash Guard
    Size 1X Plus
    $27.99
    70% off estimated retail
    Calia by Carrie Underwood Swimsuit Bottoms (view 2)Calia by Carrie Underwood Swimsuit Bottoms (view 1)
    View Product: Calia by Carrie Underwood Swimsuit Bottoms
    Size 1X Plus
    $15.99
    50% off estimated retail
    Kenneth Cole REACTION Swimsuit Bottoms (view 2)Kenneth Cole REACTION Swimsuit Bottoms (view 1)New With Tags
    View Product: Kenneth Cole REACTION Swimsuit Bottoms

    Kenneth Cole REACTION

    Swimsuit Bottoms
    Size 1X Plus
    $22.99
    65% 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
    Catalina One Piece Swimsuit (view 2)Catalina One Piece Swimsuit (view 1)
    View Product: Catalina One Piece Swimsuit

    Catalina

    One Piece Swimsuit
    Size 1X Plus
    $14.99
    21% 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 1X Plus
    $19.99
    47% off estimated retail
    Catalina Swimsuit Bottoms (view 2)Catalina Swimsuit Bottoms (view 1)
    View Product: Catalina Swimsuit Bottoms

    Catalina

    Swimsuit Bottoms
    Size 1X Plus
    $7.99
    38% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size 1X Plus
    $29.99
    41% off estimated retail
    Lauren by Ralph Lauren One Piece Swimsuit (view 2)Lauren by Ralph Lauren One Piece Swimsuit (view 1)Flawed Gem
    View Product: Lauren by Ralph Lauren One Piece Swimsuit

    Lauren by Ralph Lauren

    One Piece Swimsuit
    Size 1X Plus
    $25.99
    80% 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 Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 1X Plus
    $16.99
    32% off estimated retail
    Lane Bryant Swimsuit Top (view 2)Lane Bryant Swimsuit Top (view 1)
    View Product: Lane Bryant Swimsuit Top

    Lane Bryant

    Swimsuit Top
    Size 1X Plus
    $18.99
    50% off estimated retail
    Swim by Cacique Swimsuit Top (view 2)Swim by Cacique Swimsuit Top (view 1)
    View Product: Swim by Cacique Swimsuit Top

    Swim by Cacique

    Swimsuit Top
    Size 1X Plus
    $25.99
    49% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 1X Plus
    $12.99
    48% off estimated retail
    Swims Swimsuit Top (view 2)Swims Swimsuit Top (view 1)
    View Product: Swims Swimsuit Top

    Swims

    Swimsuit Top
    Size 1X Plus
    $30.99
    65% off estimated retail
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 1X Plus
    $12.99
    18% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

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

    Shein

    Swimsuit Top
    Size 1X Plus
    $8.99
    43% off estimated retail
    Kona Sol Swimsuit Bottoms (view 2)Kona Sol Swimsuit Bottoms (view 1)
    View Product: Kona Sol Swimsuit Bottoms

    Kona Sol

    Swimsuit Bottoms
    Size 1X Plus
    $17.99
    28% off estimated retail
    Simply Fit Swimsuit Bottoms (view 2)Simply Fit Swimsuit Bottoms (view 1)New With Tags
    View Product: Simply Fit Swimsuit Bottoms

    Simply Fit

    Swimsuit Bottoms
    Size 1X Plus
    $27.99
    46% off estimated retail
    Kona Sol Swimsuit Bottoms (view 2)Kona Sol Swimsuit Bottoms (view 1)
    View Product: Kona Sol Swimsuit Bottoms

    Kona Sol

    Swimsuit Bottoms
    Size 1X Plus
    $17.99
    28% off estimated retail
    Catalina Swimsuit Bottoms (view 2)Catalina Swimsuit Bottoms (view 1)
    View Product: Catalina Swimsuit Bottoms

    Catalina

    Swimsuit Bottoms
    Size 1X Plus
    $7.99
    38% 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 1X Plus
    $14.99
    40% 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
    Catalina Swimsuit Top (view 2)Catalina Swimsuit Top (view 1)
    View Product: Catalina Swimsuit Top

    Catalina

    Swimsuit Top
    Size 1X Plus
    $7.99
    38% off estimated retail
    Nicole Miller Studio Swimsuit Top (view 2)Nicole Miller Studio Swimsuit Top (view 1)
    View Product: Nicole Miller Studio Swimsuit Top
    Size 1X Plus
    $25.99
    65% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 1X Plus
    $11.99
    52% 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 1X Plus
    $14.99
    60% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 1X Plus
    $10.99
    56% off estimated retail
    Catalina Swimsuit Top (view 2)Catalina Swimsuit Top (view 1)
    View Product: Catalina Swimsuit Top

    Catalina

    Swimsuit Top
    Size 1X Plus
    $9.99
    23% off estimated retail
    coastal blue Swimsuit Cover Up (view 2)coastal blue Swimsuit Cover Up (view 1)
    View Product: coastal blue Swimsuit Cover Up

    coastal blue

    Swimsuit Cover Up
    Size 1X Plus
    $25.99
    65% 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 1X Plus
    $13.99
    63% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size 1X Plus
    $24.99
    51% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size 1X Plus
    $28.99
    43% 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 1X Plus
    $9.99
    58% 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
    Catalina Swimsuit Bottoms (view 2)Catalina Swimsuit Bottoms (view 1)
    View Product: Catalina Swimsuit Bottoms

    Catalina

    Swimsuit Bottoms
    Size 1X Plus
    $8.99
    30% off estimated retail
    Torrid Swimsuit Bottoms (view 2)Torrid Swimsuit Bottoms (view 1)
    View Product: Torrid Swimsuit Bottoms

    Torrid

    Swimsuit Bottoms
    Size 1X Plus
    $19.99
    60% 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
    Kiini Swimwear Swimsuit Top (view 2)Kiini Swimwear Swimsuit Top (view 1)
    View Product: Kiini Swimwear Swimsuit Top

    Kiini Swimwear

    Swimsuit Top
    Size 0
    $47.99
    68% off estimated retail
    Torrid Swimsuit Bottoms (view 2)Torrid Swimsuit Bottoms (view 1)
    View Product: Torrid Swimsuit Bottoms

    Torrid

    Swimsuit Bottoms
    Size 1X Plus
    $24.99
    51% off estimated retail
    IBIZA One Piece Swimsuit (view 2)IBIZA One Piece Swimsuit (view 1)New With Tags
    View Product: IBIZA One Piece Swimsuit

    IBIZA

    One Piece Swimsuit
    Size 1X 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
    $10.99
    42% off estimated retail
    Swim by Cacique Swimsuit Top (view 2)Swim by Cacique Swimsuit Top (view 1)
    View Product: Swim by Cacique Swimsuit Top

    Swim by Cacique

    Swimsuit Top
    Size 1X Plus
    $22.99
    54% off estimated retail
    TYR Swimsuit Bottoms (view 2)TYR Swimsuit Bottoms (view 1)
    View Product: TYR Swimsuit Bottoms

    TYR

    Swimsuit Bottoms
    Size 0
    $14.99
    60% off estimated retail
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 1X Plus
    $8.99 $7.19 20% off with code THANKU
    43% off estimated retail
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

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

    Shein

    Swimsuit Top
    Size 1X Plus
    $8.99 $7.19 20% off with code THANKU
    43% off estimated retail
    Zaful Swimsuit Bottoms (view 2)Zaful Swimsuit Bottoms (view 1)
    View Product: Zaful Swimsuit Bottoms

    Zaful

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

    Shein

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

    Shein

    Swimsuit Bottoms
    Size 1X Plus

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