USA Cycling or USAC, based in Colorado Springs, Colorado, is the national governing body for bicycle racing in the United States. It covers the disciplines of road, track, mountain bike, cyclo-cross, BMX and collegiate racing. In 2009, USAC has a membership organization of nearly 66,800 members.

USA Cycling is associated with the UCI, which governs international cycling and the United States Olympic Committee (USOC). The organization is also a member of the continental body Confederacion Panamericana de Ciclismo (COPACI).