AFA Liga Profesional de Fútbol

The Primera División (Spanish pronunciation:; English: "First Division"), known officially as Liga Profesional de Fútbol, or Torneo "Mercado Libre" (Torneo MELI) for sponsorship reasons, is a professional association football league in Argentina and the highest level of the Argentine football league system. Organised by the Argentine Football Association (AFA), it operates on a system of promotion and relegation with the Primera Nacional (Second Division). The teams placed lowest at the end of the season are relegated.

Argentina held its first championship in 1891, making it the first country outside the United Kingdom to establish a football league. The Football League had debuted in England in 1888, followed by the Scottish and Irish leagues in 1890. In the early years, only teams from Buenos Aires, Greater Buenos Aires, La Plata, Rosario, Santa Fe and Córdoba were affiliated to the national association. Teams from other cities would join in later years.

In 1931, the Primera División became professional when 18 clubs left the amateur leagues to form their own professional competition.

The Argentine championship was ranked as one of the top ten strongest leagues worldwide for the 2015 calendar year by the International Federation of Football History & Statistics (IFFHS). Argentina placed 4th after La Liga (Spain), Serie A (Italy), and Bundesliga (Germany), but has since descended to 19th in the 2021 list. In 2023, the IFFHS ranked Liga Profesional in the 10th. place with 966,5 points (Italian Serie A was first with 1619,5 points).