Ascenso MX
| Organising body | Federación Mexicana de Fútbol (FMF) |
|---|---|
| Founded | 1994 (as Primera División A de México) |
| Folded | 2020 |
| Country | Mexico |
| Confederation | CONCACAF |
| Number of clubs | 12 |
| Level on pyramid | 2 |
| Promotion to | Liga MX |
| Relegation to | Liga Premier |
| Domestic cup(s) | Copa MX Supercopa MX |
| Last champions | Oaxaca (2nd title) |
| Most championships | Sinaloa León Irapuato Necaxa (4 titles each) |
| Website | ascensomx |
| Current: 2019–20 Ascenso MX season | |
Ascenso MX, also known as Ascenso BBVA MX for sponsorship reasons, was a professional association football league in Mexico and the second level of the Mexican football league system. Formerly known as Primera División A de México (1994–2009) and also as Liga de Ascenso (2009–2012). The champions of the competition was promoted to Liga MX (top level), and the bottom team was relegated to Liga Premier (third level).
In 2012, the league rebranded its name and competition format as Ascenso MX, the major changes (clubs do not need a FMF certification to be promoted and that the competition no longer used group stages). Ascenso MX was replaced by Liga de Expansión MX on April 17, 2020.