|Founded||17 October 1943|
|Number of teams||18|
|Relegation to||Ascenso MX|
|Levels on pyramid||1|
|Domestic cup(s)|| Copa MX|
Campeón de Campeones
|CONCACAF cup(s)||CONCACAF Champions League|
|Current champions|| América|
(13th title) (Apertura 2018)
|Most successful club|| América |
The Liga MX is the top level of the Mexican football league system. Currently sponsored by BBVA through its Mexican subsidiary BBVA Bancomer, it is officially known as Liga BBVA Bancomer.
Each season, the league holds two tournaments: the Apertura, which starts in the summer, and the Clausura, which starts in the winter. As of 2017, the league comprises 18 clubs, with one being relegated every year (two tournaments) based upon its league performances over the previous three years. The first 8 teams in the table at the end of the regular phase of the tournament qualify to the liguilla ("mini-league", or "playoff"). Up until July 2011, the league was divided into 3 groups. The group formatting was removed in favor of a single-table format.
The league is considered the strongest in North America, and among the strongest in all of Latin America. According to the International Federation of Football History and Statistics, the league currently ranks 20th worldwide and was ranked as the 10th strongest league in the first decade of the 21st century (2001–2010). According to CONCACAF, the league – with an average attendance of 25,557 during the 2014–15 season – draws the largest crowds on average of any football league in the Americas and the third largest crowds of any professional sports league in North America, behind only the National Football League and Major League Baseball, and ahead of the Canadian Football League. It is also the fourth most attended football league in the world behind Germany's Bundesliga, England's Premier League and Spain's La Liga.
Of the 56 teams to have competed in the league, América has won the title 13 times, followed by Guadalajara (12), Toluca (10), Cruz Azul (8), León and Pumas UNAM (7), and Pachuca, Tigres UANL, and Santos Laguna (6). The current league champions are América, who won the Apertura 2018 tournament.
The following 18 clubs will compete in the Liga MX during the 2018–19 season.
|Team|| Position in|
| First season in|
| First season of|
current spell in
| Consecutive |
in Liga MX
| Top |
| Last top|
|Cruz Azul||6th||1964–65||72||1964–65||72||8||Invierno 1997|
|Santos Laguna||8th||1988–89||30||1988–89||30||6||Clausura 2018|
|Liga MX 2018-19|
|Liga MX seasons|
|Football in Mexico|
|Mexican competitions · Mexican Coaches · Mexican players · Mexican Stadiums|