The WEC Lightweight Champion is a title awarded to the top fighter in the lightweight division of the World Extreme Cagefighting (WEC) organization. This division typically includes competitors weighing up to 155 pounds. The champion is determined through a series of matches, culminating in a title fight where the best fighters compete for the championship belt. The WEC was known for its exciting fights and talented athletes before it merged with the Ultimate Fighting Championship (UFC) in 2010. The lightweight division has produced many notable fighters, contributing to the popularity of mixed martial arts (MMA) as a sport.