Dimayor, short for "División Mayor del Fútbol Profesional Colombiano," is the governing body for professional football in Colombia. Established in 1948, it oversees the organization and management of the top two leagues in the country: Categoría Primera A and Categoría Primera B. The main responsibilities of Dimayor include scheduling matches, enforcing rules, and promoting the sport at a national level. It also plays a crucial role in the development of football in Colombia, working to enhance the quality of the leagues and support local clubs.