2003 UCI Road World Championships
|Host city||Hamilton, Ontario, Canada|
|Date(s)||7–12 October 2003|
The 2003 UCI Road World Championships took place in Hamilton, Ontario, Canada, between October 7 and October 12, 2003. The event consisted of a road race and a time trial for men, women, men under 23, junior men and junior women.
David Millar was handed a two-year ban and stripped of his world time trial title by the British cycling federation for taking the banned performance enhancer EPO. Following this disqualification, the UCI declared Michael Rogers as the winner with the silver medal going to Uwe Peschel and the bronze to Michael Rich.