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Boys' tops come in such a variety of styles and colors, they're the perfect way to start planning an entire outfit. Shop at thredUP when you're looking for an excellent selection of like-new boys' tops that range from casual to dressy and at prices up to 90% off estimated retail.
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![Polo by Ralph Lauren Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611932432/complimentary.jpg)
![Polo by Ralph Lauren Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611932366/complimentary.jpg)
Polo by Ralph Lauren
Short Sleeve T-Shirt
Size 4T
$10.99 $6.04 45% off with code GOBIG
54% off estimated retail![Polo by Ralph Lauren Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/612068895/complimentary.jpg)
![Polo by Ralph Lauren Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/612068842/complimentary.jpg)
Polo by Ralph Lauren
Short Sleeve T-Shirt
Size 4T
$9.99 $5.49 45% off with code GOBIG
58% off estimated retail![Tommy Hilfiger Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611952864/complimentary.jpg)
![Tommy Hilfiger Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611952773/complimentary.jpg)
Tommy Hilfiger
Short Sleeve Button-Down Shirt
Size Small kids
$8.99 $4.94 45% off with code GOBIG
73% off estimated retail![Crazy 8 Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611905230/complimentary.jpg)
![Crazy 8 Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611905217/complimentary.jpg)
Crazy 8
Long Sleeve Button-Down Shirt
Size 7
$8.99 $4.94 45% off with code GOBIG
57% off estimated retail![Nike Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611837633/complimentary.jpg)
![Nike Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611837552/complimentary.jpg)
Nike
Long Sleeve T-Shirt
Size Medium youth
$13.99 $7.69 45% off with code GOBIG
61% off estimated retail![Polo by Ralph Lauren Short Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/611821063/complimentary.jpg)
![Polo by Ralph Lauren Short Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/611821038/complimentary.jpg)
Polo by Ralph Lauren
Short Sleeve Polo
Size 3T
$16.99 $9.34 45% off with code GOBIG
59% off estimated retail![Ben Sherman Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611547452/complimentary.jpg)
![Ben Sherman Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611547443/complimentary.jpg)
Ben Sherman
Short Sleeve Button-Down Shirt
Size 6
$14.99 $8.24 45% off with code GOBIG
69% off estimated retail![Standard Textile Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611384100/complimentary.jpg)
![Standard Textile Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611384083/complimentary.jpg)
Standard Textile
Short Sleeve T-Shirt
Size 6 mo
$5.99 $3.29 45% off with code GOBIG
14% off estimated retail![Assorted Brands Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611719068/complimentary.jpg)
![Assorted Brands Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611718986/complimentary.jpg)
Assorted Brands
Short Sleeve T-Shirt
Size X-Large kids
$9.99 $5.49 45% off with code GOBIG
54% off estimated retail![Perlis Short Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/611444368/complimentary.jpg)
![Perlis Short Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/611444349/complimentary.jpg)
Perlis
Short Sleeve Polo
Size X-Small kids
$17.99 $9.89 45% off with code GOBIG
67% off estimated retail![Under Armour Active T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611319736/complimentary.jpg)
![Under Armour Active T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611319684/complimentary.jpg)
Under Armour
Active T-Shirt
Size Small youth
$13.99 $7.69 45% off with code GOBIG
48% off estimated retail![Cottontails Originals Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611657365/complimentary.jpg)
![Cottontails Originals Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611657339/complimentary.jpg)
Cottontails Originals
Short Sleeve Button-Down Shirt
Size 3T
$10.99 $6.04 45% off with code GOBIG
21% off estimated retail![Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611710546/complimentary.jpg)
![Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611710501/complimentary.jpg)
Ralph Lauren
Long Sleeve Button-Down Shirt
Size Small kids
$19.99 $10.99 45% off with code GOBIG
68% off estimated retail![Dal Lago Club Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609483818/complimentary.jpg)
![Dal Lago Club Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609483762/complimentary.jpg)
Dal Lago Club
Long Sleeve Button-Down Shirt
Size 9
$10.99 $6.04 45% off with code GOBIG
66% off estimated retail![Crewcuts Outlet Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609483363/complimentary.jpg)
![Crewcuts Outlet Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609483322/complimentary.jpg)
Crewcuts Outlet
Short Sleeve Button-Down Shirt
Size 8
$9.99 $5.49 45% off with code GOBIG
60% off estimated retail![Polo by Ralph Lauren Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611572298/complimentary.jpg)
![Polo by Ralph Lauren Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611572244/complimentary.jpg)
Polo by Ralph Lauren
Short Sleeve T-Shirt
Size Medium youth
$9.99 $5.49 45% off with code GOBIG
63% off estimated retail![Under Armour Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611287896/complimentary.jpg)
![Under Armour Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611287857/complimentary.jpg)
Under Armour
Short Sleeve T-Shirt
Size Large youth
$10.99 $6.04 45% off with code GOBIG
59% off estimated retail![Hanna Andersson Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611210454/complimentary.jpg)
![Hanna Andersson Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611210427/complimentary.jpg)
Hanna Andersson
Long Sleeve T-Shirt
Size 5
$11.99 $6.59 45% off with code GOBIG
36% off estimated retail![Polo by Ralph Lauren Short Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/611827139/complimentary.jpg)
![Polo by Ralph Lauren Short Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/611827076/complimentary.jpg)
Polo by Ralph Lauren
Short Sleeve Polo
Size 10
$14.99 $8.24 45% off with code GOBIG
68% off estimated retail![Wrangler Jeans Co Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610968286/complimentary.jpg)
![Wrangler Jeans Co Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610968242/complimentary.jpg)
Wrangler Jeans Co
Long Sleeve Button-Down Shirt
Size 18 mo
$9.99 $5.49 45% off with code GOBIG
54% off estimated retail![Wrangler Jeans Co Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610967743/complimentary.jpg)
![Wrangler Jeans Co Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610967715/complimentary.jpg)
Wrangler Jeans Co
Long Sleeve Button-Down Shirt
Size 12 mo
$11.99 $6.59 45% off with code GOBIG
45% off estimated retail![Crewcuts Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/607508678/complimentary.jpg)
![Crewcuts Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/607508629/complimentary.jpg)
Crewcuts
Short Sleeve Button-Down Shirt
Size 10
$14.99 $8.24 45% off with code GOBIG
69% off estimated retail![Volcom Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611377157/complimentary.jpg)
![Volcom Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611377149/complimentary.jpg)
Volcom
Short Sleeve Button-Down Shirt
Size 6
$19.99 $10.99 45% off with code GOBIG
51% off estimated retail![Assorted Brands Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611291240/complimentary.jpg)
![Assorted Brands Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611291219/complimentary.jpg)
Assorted Brands
Short Sleeve Button-Down Shirt
Size 110 cm
$10.99 $6.04 45% off with code GOBIG
59% off estimated retail![Assorted Brands Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611291023/complimentary.jpg)
![Assorted Brands Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611291007/complimentary.jpg)
Assorted Brands
Short Sleeve Button-Down Shirt
Size 100 cm
$11.99 $6.59 45% off with code GOBIG
55% off estimated retail![Assorted Brands Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611290953/complimentary.jpg)
![Assorted Brands Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611290941/complimentary.jpg)
Assorted Brands
Short Sleeve Button-Down Shirt
Size 100 cm
$10.99 $6.04 45% off with code GOBIG
59% off estimated retail![Assorted Brands Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611290888/complimentary.jpg)
![Assorted Brands Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611290875/complimentary.jpg)
Assorted Brands
Short Sleeve Button-Down Shirt
Size 110 cm
$11.99 $6.59 45% off with code GOBIG
55% off estimated retail![Assorted Brands Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611289912/complimentary.jpg)
![Assorted Brands Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611289893/complimentary.jpg)
Assorted Brands
Short Sleeve Button-Down Shirt
Size 120 cm
$12.99 $7.14 45% off with code GOBIG
60% off estimated retail![Assorted Brands Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611289861/complimentary.jpg)
![Assorted Brands Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611289846/complimentary.jpg)
Assorted Brands
Short Sleeve Button-Down Shirt
Size 120 cm
$12.99 $7.14 45% off with code GOBIG
60% off estimated retail![Assorted Brands Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611289786/complimentary.jpg)
![Assorted Brands Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611289767/complimentary.jpg)
Assorted Brands
Short Sleeve Button-Down Shirt
Size 130 cm
$12.99 $7.14 45% off with code GOBIG
60% off estimated retail![Under Armour Active T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611985973/complimentary.jpg)
![Under Armour Active T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611985859/complimentary.jpg)
Under Armour
Active T-Shirt
Size Medium youth
$21.99 $12.09 45% off with code GOBIG
46% off estimated retail![U.S. Polo Assn. Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611986363/complimentary.jpg)
![U.S. Polo Assn. Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611986237/complimentary.jpg)
U.S. Polo Assn.
Short Sleeve T-Shirt
Size 10
$12.99 $7.14 45% off with code GOBIG
35% off estimated retail![Adidas Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611933308/complimentary.jpg)
![Adidas Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611933122/complimentary.jpg)
Adidas
Long Sleeve T-Shirt
Size X-Small kids
$7.99 $4.39 45% off with code GOBIG
60% off estimated retail![Hanna Andersson Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611918424/complimentary.jpg)
![Hanna Andersson Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611918388/complimentary.jpg)
Hanna Andersson
Long Sleeve T-Shirt
Size 8
$11.99 $6.59 45% off with code GOBIG
42% off estimated retail![Life Is Good Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611292635/complimentary.jpg)
![Life Is Good Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611292589/complimentary.jpg)
Life Is Good
Short Sleeve T-Shirt
Size X-Large youth
$9.99 $5.49 45% off with code GOBIG
63% off estimated retail![Gap Kids Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611293481/complimentary.jpg)
![Gap Kids Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611293447/complimentary.jpg)
Gap Kids
Short Sleeve T-Shirt
Size Large youth
$8.99 $4.94 45% off with code GOBIG
57% off estimated retail![Nomad by Craft + Flow Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611253396/complimentary.jpg)
![Nomad by Craft + Flow Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611253340/complimentary.jpg)
Nomad by Craft + Flow
Long Sleeve Button-Down Shirt
Size Small kids
$12.99 $7.14 45% off with code GOBIG
51% off estimated retail![Hanna Andersson Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611248437/complimentary.jpg)
![Hanna Andersson Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611248398/complimentary.jpg)
Hanna Andersson
Long Sleeve T-Shirt
Size 8
$10.99 $6.04 45% off with code GOBIG
47% off estimated retail![Gap Kids Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611243681/complimentary.jpg)
![Gap Kids Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611243644/complimentary.jpg)
Gap Kids
Short Sleeve T-Shirt
Size Small kids
$11.99 $6.59 45% off with code GOBIG
42% off estimated retail![Janie and Jack Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611346139/complimentary.jpg)
![Janie and Jack Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611346095/complimentary.jpg)
Janie and Jack
Short Sleeve Button-Down Shirt
Size 5
$12.99 $7.14 45% off with code GOBIG
66% off estimated retail![Yves Saint Laurent Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611264642/complimentary.jpg)
![Yves Saint Laurent Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611264603/complimentary.jpg)
Yves Saint Laurent
Short Sleeve T-Shirt
Size 120 cm
$39.99 $21.99 45% off with code GOBIG
73% off estimated retail![Genuine Merchandise by Team Athletics Zip Up Hoodie (view 2)](https://cf-assets-thredup.thredup.com/assets/611893609/complimentary.jpg)
![Genuine Merchandise by Team Athletics Zip Up Hoodie (view 1)](https://cf-assets-thredup.thredup.com/assets/611893522/complimentary.jpg)
Genuine Merchandise by Team Athletics
Zip Up Hoodie
Size X-Large youth
$14.99 $8.24 45% off with code GOBIG
65% off estimated retail![Vineyard Vines Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610800019/complimentary.jpg)
![Vineyard Vines Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610799991/complimentary.jpg)
Vineyard Vines
Short Sleeve Button-Down Shirt
Size 6
$23.99 $13.19 45% off with code GOBIG
41% off estimated retail![Nike Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611971026/complimentary.jpg)
![Nike Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611970967/complimentary.jpg)
Nike
Short Sleeve T-Shirt
Size Small youth
$11.99 $6.59 45% off with code GOBIG
53% off estimated retail![Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611901031/complimentary.jpg)
![Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611900966/complimentary.jpg)
Ralph Lauren
Long Sleeve Button-Down Shirt
Size 7
$11.99 $6.59 45% off with code GOBIG
73% off estimated retail![Under Armour Pullover Hoodie (view 2)](https://cf-assets-thredup.thredup.com/assets/611898419/complimentary.jpg)
![Under Armour Pullover Hoodie (view 1)](https://cf-assets-thredup.thredup.com/assets/611898397/complimentary.jpg)
Under Armour
Pullover Hoodie
Size Small youth
$24.99 $13.74 45% off with code GOBIG
54% off estimated retail![Under Armour Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611900110/complimentary.jpg)
![Under Armour Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611900094/complimentary.jpg)
Under Armour
Short Sleeve T-Shirt
Size Small youth
$11.99 $6.59 45% off with code GOBIG
55% off estimated retail![Vineyard Vines Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/612001370/complimentary.jpg)
![Vineyard Vines Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/612001232/complimentary.jpg)
Vineyard Vines
Long Sleeve T-Shirt
Size 12
$16.99 $9.34 45% off with code GOBIG
37% off estimated retail![Under Armour Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611784941/complimentary.jpg)
![Under Armour Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611784889/complimentary.jpg)
Under Armour
Short Sleeve T-Shirt
Size Large youth
$11.99 $6.59 45% off with code GOBIG
55% off estimated retail![Under Armour Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610962879/complimentary.jpg)
![Under Armour Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610962869/complimentary.jpg)
Under Armour
Short Sleeve T-Shirt
Size Medium youth
$11.99 $6.59 45% off with code GOBIG
55% off estimated retail![Rip Curl Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/598038258/complimentary.jpg)
![Rip Curl Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/598038106/complimentary.jpg)
Rip Curl
Short Sleeve Button-Down Shirt
Size 14
$15.99 $8.79 45% off with code GOBIG
67% off estimated retail![Under Armour Short Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/611912237/complimentary.jpg)
![Under Armour Short Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/611912209/complimentary.jpg)
Under Armour
Short Sleeve Polo
Size Large youth
$22.99 $12.64 45% off with code GOBIG
43% off estimated retail