- Source: 1951 UCI Road World Championships
- Fernando Alonso
- 1951 UCI Road World Championships
- UCI Road World Championships
- UCI Road World Championships – Men's road race
- 1951 UCI Road World Championships – Men's road race
- Netherlands at the UCI Road World Championships
- 1951 UCI Track Cycling World Championships
- Italy at the UCI Road World Championships
- UCI Track Cycling World Championships
- UCI Road World Championships – Men's amateur road race
- UCI Cyclo-cross World Championships
The 1951 UCI Road World Championships was the 24th edition of the UCI Road World Championships. It took place on Saturday 1 and Sunday 2 September 1951 in Varese, Italy.
The amateurs had to complete 7 laps of about 24.6 kilometres on Saturday for a total distance of 172 km, the professionals on Sunday 12 laps or about 295 kilometres.
Swiss rider Ferdi Kübler became world champion in a group sprint, ahead of Italians Fiorenzo Magni and Antonio Bevilacqua. In the amateurs' race, the Italians celebrated a double success with Gianni Ghidini beating his compatriot Rino Benedetti and Dutchman Jan Plantaz in a bunch sprint.
In the same period, the 1950 UCI Track Cycling World Championships was organized in the Stade Velodromo Vigorelli in Milan, Italy