Reebok International Limited (/ˈriːbɒk/) is an American fitness footwear and clothing brand that is a part of Authentic Brands Group. It was established in England in 1958 as a companion company to J.W.

Adidas bought Reebok for $3.8 billion in 2006 to help it to better compete with Nike. But Reebok struggled to regain the popularity it enjoyed at its peak in the 1980s, and, bowing to pressure from investors, Adidas sold it to US firm Authentic Brands Group (ABG) for $2.5 billion in August 2021.

1958. Joe and Jeff Foster, formed companion company Reebok. The name, meaning a grey rhebok, a type of antelope – comes from a South African dictionary a young Joe Foster won.

Reebok was formerly owned by Adidas, and was acquired by Authentic Brands Group from Adidas in March 2022. Compared with Adidas, which rates “It's a Start”, Authentic Brands Group communicates minimal information about its impact on people, the planet, and animals.