The 2008–09 La Liga season (known as the Liga BBVA for sponsorship reasons) was the 78th since its establishment. Real Madrid were the defending champions, having won their 31st La Liga title in the previous season. The campaign began on 30 August 2008 and ended on 31 May 2009. A total of 20 teams contested the league, 17 of which already contested in the 2007–08 season, and three of which were promoted from the Segunda División. In addition, a new match ball - the Nike T90 Omni - served as the official ball for all matches.