Trending Categories
Trending Brands
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.
5,219 items
Sort by:
View Product: Under Armour Sleeveless T-Shirt
Under Armour
Sleeveless T-Shirt
Size Large youth
$11.99 $6.59 45% off with code GOBIG
55% off estimated retailView Product: Goodfellow & Co. Short Sleeve T-Shirt
Goodfellow & Co.
Short Sleeve T-Shirt
Size Medium kids
$5.99 $3.29 45% off with code GOBIG
45% off estimated retailView Product: Tommy Bahama Short Sleeve T-Shirt
Tommy Bahama
Short Sleeve T-Shirt
Size 12 mo
$11.99 $6.59 45% off with code GOBIG
33% off estimated retailView Product: Hanna Andersson Pullover Sweater
Hanna Andersson
Pullover Sweater
Size 140 cm
$24.99 $13.74 45% off with code GOBIG
53% off estimated retailView Product: Nike Short Sleeve T-Shirt
Nike
Short Sleeve T-Shirt
Size Small youth
$12.99 $7.14 45% off with code GOBIG
50% off estimated retailView Product: Under Armour Active T-Shirt
Under Armour
Active T-Shirt
Size Large youth
$18.99 $10.44 45% off with code GOBIG
53% off estimated retailView Product: Under Armour Active Tank
Under Armour
Active Tank
Size Large youth
$21.99 $12.09 45% off with code GOBIG
46% off estimated retailView Product: Nike Short Sleeve T-Shirt
Nike
Short Sleeve T-Shirt
Size Medium tots
$12.99 $7.14 45% off with code GOBIG
50% off estimated retailView Product: Under Armour Short Sleeve T-Shirt
Under Armour
Short Sleeve T-Shirt
Size X-Small youth
$13.99 $7.69 45% off with code GOBIG
48% off estimated retailView Product: Polo by Ralph Lauren Pullover Sweater
Polo by Ralph Lauren
Pullover Sweater
Size 7
$17.99 $9.89 45% off with code GOBIG
71% off estimated retailView Product: Polo by Ralph Lauren Pullover Sweater
Polo by Ralph Lauren
Pullover Sweater
Size Small kids
$19.99 $10.99 45% off with code GOBIG
66% off estimated retailView Product: Polo by Ralph Lauren Long Sleeve T-Shirt
Polo by Ralph Lauren
Long Sleeve T-Shirt
Size 2T
$7.99 $4.39 45% off with code GOBIG
55% off estimated retailView Product: Polo by Ralph Lauren Pullover Sweater
Polo by Ralph Lauren
Pullover Sweater
Size 6
$19.99 $10.99 45% off with code GOBIG
68% off estimated retailView Product: Crewcuts Short Sleeve T-Shirt
Crewcuts
Short Sleeve T-Shirt
Size X-Large youth
$13.99 $7.69 45% off with code GOBIG
57% off estimated retailView Product: Billabong Short Sleeve T-Shirt
Billabong
Short Sleeve T-Shirt
Size Medium kids
$9.99 $5.49 45% off with code GOBIG
63% off estimated retailView Product: Fanatics Long Sleeve Jersey
Fanatics
Long Sleeve Jersey
Size Large youth
$14.99 $8.24 45% off with code GOBIG
70% off estimated retailView Product: Under Armour Short Sleeve T-Shirt
Under Armour
Short Sleeve T-Shirt
Size Small youth
$13.99 $7.69 45% off with code GOBIG
48% off estimated retailView Product: Air Jordan Short Sleeve T-Shirt
Air Jordan
Short Sleeve T-Shirt
Size Large youth
$17.99 $9.89 45% off with code GOBIG
59% off estimated retailView Product: Canterbury of New Zealand Short Sleeve T-Shirt
Canterbury of New Zealand
Short Sleeve T-Shirt
Size 6
$11.99 $6.59 45% off with code GOBIG
55% off estimated retailView Product: Canterbury of New Zealand Long Sleeve Jersey
Canterbury of New Zealand
Long Sleeve Jersey
Size 6
$10.99 $6.04 45% off with code GOBIG
59% off estimated retailView Product: Canterbury of New Zealand Long Sleeve Jersey
Canterbury of New Zealand
Long Sleeve Jersey
Size 6
$12.99 $7.14 45% off with code GOBIG
51% off estimated retailView Product: FORTNITE Short Sleeve T-Shirt
FORTNITE
Short Sleeve T-Shirt
Size Medium kids
$13.99 $7.69 45% off with code GOBIG
36% off estimated retailView Product: Tommy Bahama Short Sleeve Henley
Tommy Bahama
Short Sleeve Henley
Size 12 mo
$9.99 $5.49 45% off with code GOBIG
63% off estimated retailView Product: Under Armour Short Sleeve T-Shirt
Under Armour
Short Sleeve T-Shirt
Size Small youth
$12.99 $7.14 45% off with code GOBIG
51% off estimated retailView Product: Gap Kids Short Sleeve T-Shirt
Gap Kids
Short Sleeve T-Shirt
Size Small kids
$8.99 $4.94 45% off with code GOBIG
57% off estimated retailView Product: Under Armour Active T-Shirt
Under Armour
Active T-Shirt
Size X-Large youth
$21.99 $12.09 45% off with code GOBIG
46% off estimated retailView Product: Under Armour Short Sleeve T-Shirt
Under Armour
Short Sleeve T-Shirt
Size X-Small youth
$11.99 $6.59 45% off with code GOBIG
55% off estimated retailView Product: Vineyard Vines Short Sleeve T-Shirt
Vineyard Vines
Short Sleeve T-Shirt
Size 12
$12.99 $7.14 45% off with code GOBIG
51% off estimated retailView Product: Nike Short Sleeve T-Shirt
Nike
Short Sleeve T-Shirt
Size X-Large youth
$12.99 $7.14 45% off with code GOBIG
50% off estimated retailView Product: Under Armour Active T-Shirt
Under Armour
Active T-Shirt
Size X-Large youth
$21.99 $12.09 45% off with code GOBIG
46% off estimated retailView Product: Under Armour Active T-Shirt
Under Armour
Active T-Shirt
Size X-Large youth
$21.99 $12.09 45% off with code GOBIG
46% off estimated retailView Product: Under Armour Active T-Shirt
Under Armour
Active T-Shirt
Size X-Large youth
$22.99 $12.64 45% off with code GOBIG
43% off estimated retailView Product: Polo by Ralph Lauren Short Sleeve T-Shirt
Polo by Ralph Lauren
Short Sleeve T-Shirt
Size 7
$13.99 $7.69 45% off with code GOBIG
48% off estimated retailView Product: Polo by Ralph Lauren Pullover Sweater
Polo by Ralph Lauren
Pullover Sweater
Size Large youth
$18.99 $10.44 45% off with code GOBIG
70% off estimated retailView Product: Sonic The Hedgehog Long Sleeve T-Shirt
Sonic The Hedgehog
Long Sleeve T-Shirt
Size Small youth
$5.99 $3.29 45% off with code GOBIG
45% off estimated retailView Product: Quiksilver Short Sleeve T-Shirt
Quiksilver
Short Sleeve T-Shirt
Size Small youth
$11.99 $6.59 45% off with code GOBIG
45% off estimated retailView Product: Hurley Short Sleeve T-Shirt
Hurley
Short Sleeve T-Shirt
Size Small youth
$13.99 $7.69 45% off with code GOBIG
57% off estimated retailView Product: Perry Ellis Short Sleeve T-Shirt
Perry Ellis
Short Sleeve T-Shirt
Size Small youth
$11.99 $6.59 45% off with code GOBIG
55% off estimated retailView Product: Pokemon Short Sleeve T-Shirt
Pokemon
Short Sleeve T-Shirt
Size X-Small kids
$7.99 $4.39 45% off with code GOBIG
11% off estimated retailView Product: Under Armour Active T-Shirt
Under Armour
Active T-Shirt
Size Small youth
$18.99 $10.44 45% off with code GOBIG
53% off estimated retailView Product: Under Armour Short Sleeve T-Shirt
Under Armour
Short Sleeve T-Shirt
Size X-Small youth
$11.99 $6.59 45% off with code GOBIG
55% off estimated retailView Product: Under Armour Short Sleeve T-Shirt
Under Armour
Short Sleeve T-Shirt
Size Large youth
$11.99 $6.59 45% off with code GOBIG
55% off estimated retailView Product: Under Armour Short Sleeve T-Shirt
Under Armour
Short Sleeve T-Shirt
Size Large youth
$14.99 $8.24 45% off with code GOBIG
44% off estimated retailView Product: Under Armour Short Sleeve T-Shirt
Under Armour
Short Sleeve T-Shirt
Size Large youth
$16.99 $9.34 45% off with code GOBIG
37% off estimated retailView Product: Under Armour Short Sleeve T-Shirt
Under Armour
Short Sleeve T-Shirt
Size Small youth
$10.99 $6.04 45% off with code GOBIG
38% off estimated retailView Product: SANTA CRUZ Skateboards Short Sleeve T-Shirt
SANTA CRUZ Skateboards
Short Sleeve T-Shirt
Size Large youth
$12.99 $7.14 45% off with code GOBIG
40% off estimated retailView Product: Psycho Bunny Short Sleeve T-Shirt
Psycho Bunny
Short Sleeve T-Shirt
Size Large youth
$23.99 $13.19 45% off with code GOBIG
68% off estimated retailView Product: Under Armour Long Sleeve T-Shirt
Under Armour
Long Sleeve T-Shirt
Size Medium youth
$11.99 $6.59 45% off with code GOBIG
55% off estimated retailView Product: Active by Old Navy Sleeveless T-Shirt
Active by Old Navy
Sleeveless T-Shirt
Size 10
$7.99 $4.39 45% off with code GOBIG
50% off estimated retailView Product: Lulus Short Sleeve T-Shirt
Lulus
Short Sleeve T-Shirt
Size Small youth
$8.99 $4.94 45% off with code GOBIG
18% off estimated retailView Product: Nike Short Sleeve T-Shirt
Nike
Short Sleeve T-Shirt
Size X-Large kids
$10.99 $6.04 45% off with code GOBIG
57% off estimated retailView Product: Under Armour Active T-Shirt
Under Armour
Active T-Shirt
Size Small youth
$21.99 $12.09 45% off with code GOBIG
46% off estimated retailView Product: Nike Short Sleeve T-Shirt
Nike
Short Sleeve T-Shirt
Size Medium kids
$19.99 $10.99 45% off with code GOBIG
60% off estimated retailView Product: Nike Short Sleeve T-Shirt
Nike
Short Sleeve T-Shirt
Size Medium kids
$12.99 $7.14 45% off with code GOBIG
50% off estimated retailView Product: Hanna Andersson Long Sleeve T-Shirt
Hanna Andersson
Long Sleeve T-Shirt
Size 8
$10.99 $6.04 45% off with code GOBIG
47% off estimated retailView Product: Under Armour Active T-Shirt
Under Armour
Active T-Shirt
Size Medium youth
$18.99 $10.44 45% off with code GOBIG
53% off estimated retailView Product: Under Armour Active T-Shirt
Under Armour
Active T-Shirt
Size Medium youth
$18.99 $10.44 45% off with code GOBIG
53% off estimated retailView Product: Adidas Short Sleeve T-Shirt
Adidas
Short Sleeve T-Shirt
Size Large youth
$9.99 $5.49 45% off with code GOBIG
50% off estimated retailView Product: Buc-ees Short Sleeve T-Shirt
Buc-ees
Short Sleeve T-Shirt
Size Large youth
$6.99 $3.84 45% off with code GOBIG
50% off estimated retailView Product: Under Armour Active T-Shirt
Under Armour
Active T-Shirt
Size X-Large youth
$12.99 $7.14 45% off with code GOBIG
68% off estimated retailView Product: Hanna Andersson Long Sleeve T-Shirt
Hanna Andersson
Long Sleeve T-Shirt
Size 90 cm
$10.99 $6.04 45% off with code GOBIG
47% off estimated retailView Product: Hanna Andersson Short Sleeve T-Shirt
Hanna Andersson
Short Sleeve T-Shirt
Size 2T
$11.99 $6.59 45% off with code GOBIG
36% off estimated retailView Product: Hope & Henry Pullover Sweater
Hope & Henry
Pullover Sweater
Size X-Small kids
$14.99 $8.24 45% off with code GOBIG
66% off estimated retailView Product: Under Armour Long Sleeve T-Shirt
Under Armour
Long Sleeve T-Shirt
Size X-Large youth
$11.99 $6.59 45% off with code GOBIG
55% off estimated retailView Product: Under Armour Long Sleeve T-Shirt
Under Armour
Long Sleeve T-Shirt
Size X-Large youth
$12.99 $7.14 45% off with code GOBIG
51% off estimated retail