The 2008–09 Liga Premier de Ascenso season was split in two tournaments and . Liga Premier was the third-tier football league of Mexico. The season was played between 8 August 2008 and 31 May 2009. As of this season, the Segunda División de México was divided into different branches: the Liga Premier de Ascenso for the more developed teams that have aspirations for promotion to Liga de Ascenso and the Liga de Nuevos Talentos for those clubs with less infrastructure.