The UCI Road World Championships are the annual world championships for bicycle road racing organized by the Union Cycliste Internationale (UCI). The UCI Road World Championships consist of events for road race and individual time trial, and as of 2019, a mixed team relay.

Road bicycle racing is the cycle sport discipline of road cycling, held primarily on paved roads. Road racing is the most popular professional form of bicycle racing, in terms of numbers of competitors, events and spectators. The two most common competition formats are mass start events, where riders start simultaneously and race to a set finish point; and time trials, where individual riders or teams race a course alone against the clock. Stage races or "tours" take multiple days, and consist of several mass-start or time-trial stages ridden consecutively.