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.

640 items
Sort by:
    Cupshe One Piece Swimsuit (view 2)Cupshe One Piece Swimsuit (view 1)
    View Product: Cupshe One Piece Swimsuit

    Cupshe

    One Piece Swimsuit
    Size 0X Plus
    $20.99
    27% off estimated retail
    Speedo One Piece Swimsuit (view 2)Speedo One Piece Swimsuit (view 1)
    View Product: Speedo One Piece Swimsuit

    Speedo

    One Piece Swimsuit
    Size XXS
    $38.99
    46% off estimated retail
    Dolfin One Piece Swimsuit (view 2)Dolfin One Piece Swimsuit (view 1)
    View Product: Dolfin One Piece Swimsuit

    Dolfin

    One Piece Swimsuit
    Size XXS
    $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 XXS
    $12.99
    48% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 0X Plus
    $12.99
    48% off estimated retail
    Everlane Swimsuit Top (view 2)Everlane Swimsuit Top (view 1)
    View Product: Everlane Swimsuit Top

    Everlane

    Swimsuit Top
    Size XXS
    $23.99
    62% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 0X 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 0X Plus
    $14.99
    37% off estimated retail
    Cupshe Swimsuit Bottoms (view 2)Cupshe Swimsuit Bottoms (view 1)New With Tags
    View Product: Cupshe Swimsuit Bottoms

    Cupshe

    Swimsuit Bottoms
    Size 0X Plus
    $16.99
    26% off estimated retail
    Xhilaration Swimsuit Top (view 2)Xhilaration Swimsuit Top (view 1)
    View Product: Xhilaration Swimsuit Top

    Xhilaration

    Swimsuit Top
    Size 0X Plus
    $10.99
    15% off estimated retail
    J.Crew Swimsuit Bottoms (view 2)J.Crew Swimsuit Bottoms (view 1)
    View Product: J.Crew Swimsuit Bottoms

    J.Crew

    Swimsuit Bottoms
    Size XXS
    $17.99
    67% off estimated retail
    ZeroXposur Rash Guard (view 2)ZeroXposur Rash Guard (view 1)
    View Product: ZeroXposur Rash Guard

    ZeroXposur

    Rash Guard
    Size 0X Plus
    $27.99
    70% off estimated retail
    Tiger Mist Swimsuit Top (view 2)Tiger Mist Swimsuit Top (view 1)
    View Product: Tiger Mist Swimsuit Top

    Tiger Mist

    Swimsuit Top
    Size XXS
    $8.99
    71% off estimated retail
    Chelsea28 Swimsuit Top (view 2)Chelsea28 Swimsuit Top (view 1)New With Tags
    View Product: Chelsea28 Swimsuit Top

    Chelsea28

    Swimsuit Top
    Size XXS
    $17.99
    63% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 0X Plus
    $11.99
    52% 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 0X Plus
    $12.99
    54% off estimated retail
    Cupshe Swimsuit Bottoms (view 2)Cupshe Swimsuit Bottoms (view 1)New With Tags
    View Product: Cupshe Swimsuit Bottoms

    Cupshe

    Swimsuit Bottoms
    Size 0X Plus
    $15.99
    31% off estimated retail
    Alexis Swimsuit Cover Up (view 2)Alexis Swimsuit Cover Up (view 1)
    View Product: Alexis Swimsuit Cover Up

    Alexis

    Swimsuit Cover Up
    Size 0X Plus
    $182.99
    20% off estimated retail
    Athleta Swimsuit Top (view 2)Athleta Swimsuit Top (view 1)
    View Product: Athleta Swimsuit Top

    Athleta

    Swimsuit Top
    Size XXS
    $32.99
    54% off estimated retail
    Athleta Swimsuit Bottoms (view 2)Athleta Swimsuit Bottoms (view 1)
    View Product: Athleta Swimsuit Bottoms

    Athleta

    Swimsuit Bottoms
    Size XXS
    $31.99
    55% off estimated retail
    ZeroXposur Swimsuit Top (view 2)ZeroXposur Swimsuit Top (view 1)New With Tags
    View Product: ZeroXposur Swimsuit Top

    ZeroXposur

    Swimsuit Top
    Size 0X Plus
    $23.99
    55% off estimated retail
    Adore Me One Piece Swimsuit (view 2)Adore Me One Piece Swimsuit (view 1)
    View Product: Adore Me One Piece Swimsuit

    Adore Me

    One Piece Swimsuit
    Size 0X Plus
    $22.99
    60% off estimated retail
    Walter Baker Swimsuit Cover Up (view 2)Walter Baker Swimsuit Cover Up (view 1)
    View Product: Walter Baker Swimsuit Cover Up

    Walter Baker

    Swimsuit Cover Up
    Size 0X Plus
    $44.99
    73% off estimated retail
    Abercrombie & Fitch One Piece Swimsuit (view 2)Abercrombie & Fitch One Piece Swimsuit (view 1)New With Tags
    View Product: Abercrombie & Fitch One Piece Swimsuit

    Abercrombie & Fitch

    One Piece Swimsuit
    Size XXS
    $23.99
    70% off estimated retail
    Athleta Swimsuit Bottoms (view 2)Athleta Swimsuit Bottoms (view 1)
    View Product: Athleta Swimsuit Bottoms

    Athleta

    Swimsuit Bottoms
    Size XXS
    $26.99
    54% off estimated retail
    Mara Hoffman Swimsuit Bottoms (view 2)Mara Hoffman Swimsuit Bottoms (view 1)Flawed Gem
    View Product: Mara Hoffman Swimsuit Bottoms

    Mara Hoffman

    Swimsuit Bottoms
    Size XXS
    $37.99
    66% off estimated retail
    Kona Sol Swimsuit Bottoms (view 2)Kona Sol Swimsuit Bottoms (view 1)New With Tags
    View Product: Kona Sol Swimsuit Bottoms

    Kona Sol

    Swimsuit Bottoms
    Size 0X Plus
    $14.99
    40% off estimated retail
    J.Crew Swimsuit Bottoms (view 2)J.Crew Swimsuit Bottoms (view 1)New With Tags
    View Product: J.Crew Swimsuit Bottoms

    J.Crew

    Swimsuit Bottoms
    Size XXS
    $20.99
    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 XXS
    $16.99
    55% off estimated retail
    Kristin Davis One Piece Swimsuit (view 2)Kristin Davis One Piece Swimsuit (view 1)
    View Product: Kristin Davis One Piece Swimsuit

    Kristin Davis

    One Piece Swimsuit
    Size 0X Plus
    $13.99
    26% off estimated retail
    Dolfin One Piece Swimsuit (view 2)Dolfin One Piece Swimsuit (view 1)
    View Product: Dolfin One Piece Swimsuit

    Dolfin

    One Piece Swimsuit
    Size XXS
    $12.99
    35% off estimated retail
    Lululemon Athletica Swimsuit Top (view 2)Lululemon Athletica Swimsuit Top (view 1)Flawed Gem
    View Product: Lululemon Athletica Swimsuit Top
    Size XXS
    $31.99
    58% off estimated retail
    Adore Me One Piece Swimsuit (view 2)Adore Me One Piece Swimsuit (view 1)
    View Product: Adore Me One Piece Swimsuit

    Adore Me

    One Piece Swimsuit
    Size 0X Plus
    $17.99
    62% 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 0X Plus
    $17.99
    28% off estimated retail
    Adore Me Swimsuit Bottoms (view 2)Adore Me Swimsuit Bottoms (view 1)
    View Product: Adore Me Swimsuit Bottoms

    Adore Me

    Swimsuit Bottoms
    Size 0X Plus
    $16.99
    56% off estimated retail
    Adore Me Swimsuit Top (view 2)Adore Me Swimsuit Top (view 1)New With Tags
    View Product: Adore Me Swimsuit Top

    Adore Me

    Swimsuit Top
    Size 0X Plus
    $15.99
    59% 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 0X Plus
    $18.99
    36% off estimated retail
    Triangl Swimsuit Top (view 2)Triangl Swimsuit Top (view 1)
    View Product: Triangl Swimsuit Top

    Triangl

    Swimsuit Top
    Size XXS
    $26.99
    65% off estimated retail
    Wild Fable Swimsuit Bottoms (view 2)Wild Fable Swimsuit Bottoms (view 1)New With Tags
    View Product: Wild Fable Swimsuit Bottoms

    Wild Fable

    Swimsuit Bottoms
    Size XXS
    $8.99 $8.4
    Shein Swimsuit Cover Up (view 2)Shein Swimsuit Cover Up (view 1)
    View Product: Shein Swimsuit Cover Up

    Shein

    Swimsuit Cover Up
    Size 0X Plus
    $13.99
    50% off estimated retail
    FP Movement Swimsuit Top (view 2)FP Movement Swimsuit Top (view 1)
    View Product: FP Movement Swimsuit Top

    FP Movement

    Swimsuit Top
    Size XXS
    $14.99
    60% off estimated retail
    Everlane Swimsuit Top (view 2)Everlane Swimsuit Top (view 1)
    View Product: Everlane Swimsuit Top

    Everlane

    Swimsuit Top
    Size XXS
    $26.99
    57% off estimated retail
    Athleta Swimsuit Bottoms (view 2)Athleta Swimsuit Bottoms (view 1)New With Tags
    View Product: Athleta Swimsuit Bottoms

    Athleta

    Swimsuit Bottoms
    Size XXS
    $27.99
    57% off estimated retail
    Wild Fable One Piece Swimsuit (view 2)Wild Fable One Piece Swimsuit (view 1)
    View Product: Wild Fable One Piece Swimsuit

    Wild Fable

    One Piece Swimsuit
    Size XXS
    $11.99
    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 0X Plus
    $18.99
    57% off estimated retail
    Speedo One Piece Swimsuit (view 2)Speedo One Piece Swimsuit (view 1)New With Tags
    View Product: Speedo One Piece Swimsuit

    Speedo

    One Piece Swimsuit
    Size XXS
    $31.99
    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 0X Plus
    SKYE Swimsuit Bottoms (view 2)SKYE Swimsuit Bottoms (view 1)New With Tags
    View Product: SKYE Swimsuit Bottoms

    SKYE

    Swimsuit Bottoms
    Size 0X Plus
    Shein One Piece Swimsuit (view 2)Shein One Piece Swimsuit (view 1)
    View Product: Shein One Piece Swimsuit

    Shein

    One Piece Swimsuit
    Size 0X Plus
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 0X Plus
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 0X Plus
    Cupshe One Piece Swimsuit (view 2)Cupshe One Piece Swimsuit (view 1)New With Tags
    View Product: Cupshe One Piece Swimsuit

    Cupshe

    One Piece Swimsuit
    Size 0X Plus

    Loading...