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.

598 items
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    Swimsuits for all Swimsuit Bottoms (view 2)Swimsuits for all Swimsuit Bottoms (view 1)
    View Product: Swimsuits for all Swimsuit Bottoms

    Swimsuits for all

    Swimsuit Bottoms
    Size 22 Plus
    $20.99
    44% off estimated retail
    Raisins One Piece Swimsuit (view 2)Raisins One Piece Swimsuit (view 1)
    View Product: Raisins One Piece Swimsuit

    Raisins

    One Piece Swimsuit
    Size 22 Plus
    $17.99
    37% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size 3X Plus
    $24.99
    51% off estimated retail
    Cocoship One Piece Swimsuit (view 2)Cocoship One Piece Swimsuit (view 1)
    View Product: Cocoship One Piece Swimsuit

    Cocoship

    One Piece Swimsuit
    Size 3X Plus
    $22.99
    20% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Swimsuits for all Swimsuit Bottoms (view 2)Swimsuits for all Swimsuit Bottoms (view 1)
    View Product: Swimsuits for all Swimsuit Bottoms

    Swimsuits for all

    Swimsuit Bottoms
    Size 22 Plus
    $17.99
    52% off estimated retail
    Swimsuits for all Swimsuit Cover Up (view 2)Swimsuits for all Swimsuit Cover Up (view 1)
    View Product: Swimsuits for all Swimsuit Cover Up

    Swimsuits for all

    Swimsuit Cover Up
    Size 22 Plus
    $22.99
    59% off estimated retail
    Delta Burke Swimsuit Top (view 2)Delta Burke Swimsuit Top (view 1)
    View Product: Delta Burke Swimsuit Top

    Delta Burke

    Swimsuit Top
    Size 22 Plus
    $20.99
    34% 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 22 Plus
    $27.99
    45% off estimated retail
    Unbranded Swimsuit Cover Up (view 2)Unbranded Swimsuit Cover Up (view 1)
    View Product: Unbranded Swimsuit Cover Up

    Unbranded

    Swimsuit Cover Up
    Size 3X Plus
    $18.99
    50% off estimated retail
    Swim by Cacique Swimsuit Cover Up (view 2)Swim by Cacique Swimsuit Cover Up (view 1)
    View Product: Swim by Cacique Swimsuit Cover Up

    Swim by Cacique

    Swimsuit Cover Up
    Size 22 Plus
    $28.99
    61% off estimated retail
    L.L.Bean Swimsuit Bottoms (view 2)L.L.Bean Swimsuit Bottoms (view 1)
    View Product: L.L.Bean Swimsuit Bottoms

    L.L.Bean

    Swimsuit Bottoms
    Size 22 Plus
    $13.99
    56% off estimated retail
    Andie Swimsuit Top (view 2)Andie Swimsuit Top (view 1)New With Tags
    View Product: Andie Swimsuit Top

    Andie

    Swimsuit Top
    Size 3X Plus
    $29.99
    60% off estimated retail
    Bal Harbour Swimsuit Bottoms (view 2)Bal Harbour Swimsuit Bottoms (view 1)
    View Product: Bal Harbour Swimsuit Bottoms

    Bal Harbour

    Swimsuit Bottoms
    Size 3X Plus
    $16.99
    55% off estimated retail
    Swim by Cacique Swimsuit Bottoms (view 2)Swim by Cacique Swimsuit Bottoms (view 1)
    View Product: Swim by Cacique Swimsuit Bottoms

    Swim by Cacique

    Swimsuit Bottoms
    Size 22 Plus
    $24.99
    51% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 3X Plus
    $10.99
    56% 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 22 Plus
    $14.99
    40% off estimated retail
    J.Crew Swimsuit Top (view 2)J.Crew Swimsuit Top (view 1)
    View Product: J.Crew Swimsuit Top

    J.Crew

    Swimsuit Top
    Size 3X Plus
    $19.99
    71% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 3X Plus
    $14.99
    40% 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 3X Plus
    $10.99
    54% 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 3X Plus
    $19.99
    47% off estimated retail
    Time and Tru Swimsuit Top (view 2)Time and Tru Swimsuit Top (view 1)
    View Product: Time and Tru Swimsuit Top

    Time and Tru

    Swimsuit Top
    Size 3X Plus
    $6.99
    46% off estimated retail
    Time and Tru Swimsuit Top (view 2)Time and Tru Swimsuit Top (view 1)
    View Product: Time and Tru Swimsuit Top

    Time and Tru

    Swimsuit Top
    Size 3X Plus
    $8.99
    30% off estimated retail
    SWIM 365 Swimsuit Top (view 2)SWIM 365 Swimsuit Top (view 1)
    View Product: SWIM 365 Swimsuit Top

    SWIM 365

    Swimsuit Top
    Size 22 Plus
    $9.99
    23% off estimated retail
    Avenue Swimsuit Top (view 2)Avenue Swimsuit Top (view 1)
    View Product: Avenue Swimsuit Top

    Avenue

    Swimsuit Top
    Size 22 Plus
    $16.99
    46% off estimated retail
    Shein Swimsuit Top (view 2)Shein Swimsuit Top (view 1)
    View Product: Shein Swimsuit Top

    Shein

    Swimsuit Top
    Size 3X Plus
    $12.99
    18% 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 3X Plus
    $34.99
    53% off estimated retail
    ASOS One Piece Swimsuit (view 2)ASOS One Piece Swimsuit (view 1)
    View Product: ASOS One Piece Swimsuit

    ASOS

    One Piece Swimsuit
    Size 22 Plus
    $20.99
    56% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 3X Plus
    $12.99
    48% 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 3X Plus
    $16.99
    32% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 3X Plus
    $13.99
    44% 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 3X Plus
    $12.99
    48% off estimated retail
    Panache Swimwear Swimsuit Bottoms (view 2)Panache Swimwear Swimsuit Bottoms (view 1)
    View Product: Panache Swimwear Swimsuit Bottoms

    Panache Swimwear

    Swimsuit Bottoms
    Size 3X Plus
    $25.99
    49% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 22 Plus
    $14.99
    40% off estimated retail
    BLOOMCHIC Swimsuit Top (view 2)BLOOMCHIC Swimsuit Top (view 1)
    View Product: BLOOMCHIC Swimsuit Top

    BLOOMCHIC

    Swimsuit Top
    Size 22 Plus
    $17.99
    28% 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 3X Plus
    $18.99
    50% off estimated retail
    Christina Swimsuit Cover Up (view 2)Christina Swimsuit Cover Up (view 1)
    View Product: Christina Swimsuit Cover Up

    Christina

    Swimsuit Cover Up
    Size 3X Plus
    $19.99
    58% off estimated retail
    Robby Lens Swimwear One Piece Swimsuit (view 2)Robby Lens Swimwear One Piece Swimsuit (view 1)
    View Product: Robby Lens Swimwear One Piece Swimsuit

    Robby Lens Swimwear

    One Piece Swimsuit
    Size 22 Plus
    $27.99
    50% off estimated retail
    Lands' End Swimsuit Top (view 2)Lands' End Swimsuit Top (view 1)
    View Product: Lands' End Swimsuit Top

    Lands' End

    Swimsuit Top
    Size 22 Plus
    $25.99
    59% off estimated retail
    Lands' End Swimsuit Top (view 2)Lands' End Swimsuit Top (view 1)
    View Product: Lands' End Swimsuit Top

    Lands' End

    Swimsuit Top
    Size 22 Plus
    $26.99
    57% off estimated retail
    Wave Zone Swimsuit Cover Up (view 2)Wave Zone Swimsuit Cover Up (view 1)New With Tags
    View Product: Wave Zone Swimsuit Cover Up

    Wave Zone

    Swimsuit Cover Up
    Size 22 Plus
    $18.99
    32% off estimated retail
    Lands' End Swimsuit Top (view 2)Lands' End Swimsuit Top (view 1)
    View Product: Lands' End Swimsuit Top

    Lands' End

    Swimsuit Top
    Size 22 Plus
    $23.99
    62% off estimated retail
    Lands' End Swimsuit Top (view 2)Lands' End Swimsuit Top (view 1)
    View Product: Lands' End Swimsuit Top

    Lands' End

    Swimsuit Top
    Size 22 Plus
    $24.99
    60% 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 3X Plus
    $37.99
    50% off estimated retail
    Old Navy Swimsuit Top (view 2)Old Navy Swimsuit Top (view 1)New With Tags
    View Product: Old Navy Swimsuit Top

    Old Navy

    Swimsuit Top
    Size 3X Plus
    $13.99
    44% off estimated retail
    Time and Tru Swimsuit Bottoms (view 2)Time and Tru Swimsuit Bottoms (view 1)
    View Product: Time and Tru Swimsuit Bottoms

    Time and Tru

    Swimsuit Bottoms
    Size 3X Plus
    $5.99
    53% 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 3X Plus
    $13.99
    68% off estimated retail
    Miraclesuit One Piece Swimsuit (view 2)Miraclesuit One Piece Swimsuit (view 1)
    View Product: Miraclesuit One Piece Swimsuit

    Miraclesuit

    One Piece Swimsuit
    Size 22 Plus
    $43.99
    61% off estimated retail
    Assorted Brands One Piece Swimsuit (view 2)Assorted Brands One Piece Swimsuit (view 1)
    View Product: Assorted Brands One Piece Swimsuit

    Assorted Brands

    One Piece Swimsuit
    Size 3X Plus
    $18.99
    50% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 3X Plus
    $16.99
    32% 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 3X Plus
    $17.99
    52% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 3X Plus
    $14.99
    40% 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 3X Plus
    $35.99
    30% off estimated retail
    Coco Reef Swimsuit Bottoms (view 2)Coco Reef Swimsuit Bottoms (view 1)New With Tags
    View Product: Coco Reef Swimsuit Bottoms

    Coco Reef

    Swimsuit Bottoms
    Size 3X Plus
    $29.99
    41% off estimated retail
    Sand N Sun Swimsuit Cover Up (view 2)Sand N Sun Swimsuit Cover Up (view 1)
    View Product: Sand N Sun Swimsuit Cover Up

    Sand N Sun

    Swimsuit Cover Up
    Size 3X Plus
    $21.99
    61% off estimated retail
    Meet.Curve Swimsuit Top (view 2)Meet.Curve Swimsuit Top (view 1)New With Tags
    View Product: Meet.Curve Swimsuit Top

    Meet.Curve

    Swimsuit Top
    Size 3X Plus
    $15.99
    36% off estimated retail
    Mossimo Supply Co. Swimsuit Top (view 2)Mossimo Supply Co. Swimsuit Top (view 1)
    View Product: Mossimo Supply Co. Swimsuit Top

    Mossimo Supply Co.

    Swimsuit Top
    Size 3X Plus
    $10.99
    15% off estimated retail
    Croft & Barrow Swimsuit Top (view 2)Croft & Barrow Swimsuit Top (view 1)
    View Product: Croft & Barrow Swimsuit Top

    Croft & Barrow

    Swimsuit Top
    Size 22 Plus
    $8.99
    43% 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 3X Plus
    $10.99
    56% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size 3X Plus
    $22.99
    54% off estimated retail
    Cupshe Swimsuit Top (view 2)Cupshe Swimsuit Top (view 1)
    View Product: Cupshe Swimsuit Top

    Cupshe

    Swimsuit Top
    Size 3X Plus
    $13.99
    26% off estimated retail
    J.Crew Swimsuit Top (view 2)J.Crew Swimsuit Top (view 1)
    View Product: J.Crew Swimsuit Top

    J.Crew

    Swimsuit Top
    Size 3X Plus
    $16.99
    75% off estimated retail
    ELOQUII One Piece Swimsuit (view 2)ELOQUII One Piece Swimsuit (view 1)
    View Product: ELOQUII One Piece Swimsuit

    ELOQUII

    One Piece Swimsuit
    Size 22 Plus
    $21.99
    71% off estimated retail
    Shein Swimsuit Top (view 2)Shein Swimsuit Top (view 1)
    View Product: Shein Swimsuit Top

    Shein

    Swimsuit Top
    Size 3X Plus
    $11.99
    25% off estimated retail
    Assorted Brands Swimsuit Bottoms (view 2)Assorted Brands Swimsuit Bottoms (view 1)New With Tags
    View Product: Assorted Brands Swimsuit Bottoms

    Assorted Brands

    Swimsuit Bottoms
    Size 3X Plus
    $10.99
    56% off estimated retail
    Old Navy Swimsuit Top (view 2)Old Navy Swimsuit Top (view 1)
    View Product: Old Navy Swimsuit Top

    Old Navy

    Swimsuit Top
    Size 3X Plus
    $11.99
    52% off estimated retail
    Kona Sol Swimsuit Top (view 2)Kona Sol Swimsuit Top (view 1)
    View Product: Kona Sol Swimsuit Top

    Kona Sol

    Swimsuit Top
    Size 3X Plus
    $17.99
    28% off estimated retail
    Athleta Board Shorts (view 2)Athleta Board Shorts (view 1)
    View Product: Athleta Board Shorts

    Athleta

    Board Shorts
    Size 3X Plus
    $24.99
    57% off estimated retail
    Athleta Board Shorts (view 2)Athleta Board Shorts (view 1)
    View Product: Athleta Board Shorts

    Athleta

    Board Shorts
    Size 3X Plus
    $28.99
    50% off estimated retail
    Unbranded One Piece Swimsuit (view 2)Unbranded One Piece Swimsuit (view 1)New With Tags
    View Product: Unbranded One Piece Swimsuit

    Unbranded

    One Piece Swimsuit
    Size 3X Plus
    $18.99
    50% off estimated retail
    Meet.Curve Swimsuit Top (view 2)Meet.Curve Swimsuit Top (view 1)New With Tags
    View Product: Meet.Curve Swimsuit Top

    Meet.Curve

    Swimsuit Top
    Size 3X Plus
    $16.99
    32% 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 22 Plus
    $10.99
    65% off estimated retail
    TYR One Piece Swimsuit (view 2)TYR One Piece Swimsuit (view 1)
    View Product: TYR One Piece Swimsuit

    TYR

    One Piece Swimsuit
    Size 22 Plus
    $31.99
    43% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 3X Plus
    $11.99
    52% off estimated retail
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 3X Plus
    $12.99
    18% off estimated retail
    YMI One Piece Swimsuit (view 2)YMI One Piece Swimsuit (view 1)
    View Product: YMI One Piece Swimsuit

    YMI

    One Piece Swimsuit
    Size 22 Plus
    $14.99
    40% off estimated retail
    Catalina Swimsuit Top (view 2)Catalina Swimsuit Top (view 1)New With Tags
    View Product: Catalina Swimsuit Top

    Catalina

    Swimsuit Top
    Size 3X Plus
    $7.99
    38% off estimated retail
    Catalina Swimsuit Top (view 2)Catalina Swimsuit Top (view 1)New With Tags
    View Product: Catalina Swimsuit Top

    Catalina

    Swimsuit Top
    Size 3X Plus
    $7.99
    38% off estimated retail
    24th & Ocean Swimsuit Bottoms (view 2)24th & Ocean Swimsuit Bottoms (view 1)
    View Product: 24th & Ocean Swimsuit Bottoms

    24th & Ocean

    Swimsuit Bottoms
    Size 22 Plus
    $14.99
    40% off estimated retail
    Zaful Swimsuit Bottoms (view 2)Zaful Swimsuit Bottoms (view 1)
    View Product: Zaful Swimsuit Bottoms

    Zaful

    Swimsuit Bottoms
    Size 3X Plus
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 3X Plus
    Chaps Swimsuit Top (view 2)Chaps Swimsuit Top (view 1)
    View Product: Chaps Swimsuit Top

    Chaps

    Swimsuit Top
    Size 22 Plus

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