The International Cycling Union (UCI) is the world governing body for the sport of cycling. Founded in 1900, it oversees international competitions and sets the rules for various cycling disciplines, including road racing, track cycling, mountain biking, and BMX. The UCI aims to promote cycling globally and ensure fair play among athletes. The UCI organizes major events such as the UCI Road World Championships and the UCI Mountain Bike World Championships. It also works to develop cycling at all levels, from amateur to professional, and collaborates with national cycling federations to enhance the sport's growth and popularity worldwide.