There are several 2015 UCI World Championships. The International Cycling Union (UCI) holds World Championships every year. For 2015, these include:

2015 UCI Road World Championships in Richmond, Virginia in September 2015. 2015 UCI Track Cycling World Championships in February 2015 2015 UCI Para-cycling Road World Championships 2015 UCI Para-cycling Track World Championships 2015 UCI Mountain Bike & Trials World Championships 2015 UCI Mountain Bike Marathon World Championships 2015 UCI Cyclo-cross World Championships 2015 UCI BMX World Championships 2015 UCI Indoor Cycling World Championships