Diadora is an Italian sportswear and footwear manufacturing company based in Caerano di San Marco (Veneto), subsidiary of Geox, founded in 1948.

Diadora produces football boots and athletic shoes, as well as a range of apparel that includes t-shirts, polo shirts, hoodies, jackets, leggings, shorts, and compression garments.

[3] The mid-1970s also marked Diadora's entry into the football category, aided by Roberto Bettega, who provided consulting information.

In 2008, Diadora SpA signed a joint venture with Win Hanverky Holdings Limited, forming a new company called "Winor International Company Limited" that operates the trademark "Diadora" in China, Hong Kong, and Macau to manufacture, design, promote, distribute, and sell products bearing the brand in those countries.

[5] In June 2009, Diadora reached an agreement with Italian shoe-making company Geox's founder and chairman Mario Moretti Polegato to buy its assets through his family's investment arm, LIR.