Under Armour's logo consists of which two letters?

Under Armour’s logo consists of the letters U and A.

The mark is a stylized, interlocking design built from the initials of “Under Armour.” The two mirrored, curved forms create a compact emblem that can be recognized even when the company name is not printed beside it. The logo is commonly paired with the Under Armour wordmark on apparel, footwear, equipment, and advertising.

The emblem’s shape can make it look abstract at first glance, which leads to occasional guesses such as “S and A” or other letter combinations. Its central visual idea, however, is the combination of the brand’s initials rather than a hidden third letter or an unrelated symbol.

The logo belongs to a broader naming identity centered on the word “Under.” Kevin Plank chose the company name after considering “Body Armor”; trademark complications helped lead to the final wording. The spelling “Armour,” rather than the American “Armor,” was also selected partly because the corresponding toll-free phone number was available.