Reebok International Limited is a British producer of athletic footwear, apparel, and accessories and is currently a subsidiary of Adidas AG. The name comes from Afrikaans/Dutch spelling of rhebok, a type of African antelope or gazelle. The company, founded in 1895, was originally called Mercury Sports but was renamed Reebok in 1960. The company's founders, Joe and Jeff Foster, found the name in a dictionary won in a race by Joe Foster as a boy; the dictionary was a South African edition, hence the spelling.
Reebok is now owned by the German footwear giant Adidas, which completed its acquisition in early 2006. Source