The Bulgarian National Basketball League (NBL) is the top professional basketball league in Bulgaria. Established in 1944, it features several teams competing for the national championship. The league operates on a system of promotion and relegation, allowing teams from lower divisions to move up based on their performance. The NBL consists of both domestic and foreign players, contributing to a diverse level of competition. The league's season typically runs from October to May, culminating in playoffs to determine the champion. The NBL plays a crucial role in developing basketball talent in Bulgaria and promoting the sport nationwide.