Under Armour, Inc. was founded in 1996 by Kevin Plank and is headquartered in Baltimore, Maryland. The company's core mission is to make all athletes better through passion, design, and the relentless pursuit of innovation. Under Armour designs, markets, and distributes branded athletic performance apparel, footwear, and accessories. Their product line includes shorts, tops, pants, socks, belts, shoes, sport gloves, sunglasses, water bottles, backpacks, and hats, catering to various sports such as baseball, basketball, football, golf, hockey, hunting, fishing, and running. Under Armour serves a global market with a focus on enhancing athletic performance.

Notable affiliated people include founder Kevin Plank, who serves as Executive Chairman, and Colin Browne, the interim President and CEO. Under Armour has achieved significant milestones, including being publicly traded on the NYSE under the symbols UAA and UA and being a component of the S&P 400. The company reported a revenue of $5.683 billion. Under Armour's impact is evident in its widespread recognition and influence in the athletic apparel industry, consistently pushing the boundaries of sportswear technology and performance.