Shimano, Inc. is a Japanese multinational manufacturer of cycling components, fishing tackle and rowing equipment. It produced golf supplies until 2005 and snowboarding gear until 2008. Bicycle components represented 80%, fishing tackle 19%, and other products 0.1%.

Shimano sales constitute an estimated 70–80% of the global bicycle component market by value. Its products include drivetrain, brake, wheel and pedal components for road, mountain, track and hybrid bikes.

Alexi Grewal used a bicycle equipped with Shimano DynaDrive chainset and pedals (the remainder of the components on his bicycle were primarily Suntour and DiaCompe) to win the 1984 Olympic road race in Los Angeles. In the 1988 Giro d'Italia, Andrew Hampsten rode Shimano to its first Grand Tour victory. In 2002, world championships in both the road and time trial disciplines were won on Shimano equipment. Alberto Contador's 2007 victory in the Tour de France on a Shimano-equipped bicycle represents the first official General Classification victory in that race by a rider using Shimano components.

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