The Vietnamese National Football League, also known as the V.League 1, is the top professional football league in Vietnam. Established in 1980, it features clubs from across the country competing for the championship title. The league operates on a system of promotion and relegation with the V.League 2, the second tier of Vietnamese football. The V.League 1 typically runs from February to October each year, with teams playing each other in a round-robin format. The league has grown in popularity, attracting local talent and international players, contributing to the development of football in Vietnam.