The 2012 Primera División del Fútbol Profesional Chileno season (known as the 2012 Campeonato Nacional Petrobras for sponsorship reasons) was the 81st season of top-flight football in Chile.
Universidad de Chile won both the Apertura and the Clausura Championships For the 2012, the ANFP's Council of Club Presidents approved the return to the Apertura and Clausura format, with playoffs.
Santiago Morning and Ñublense were relegated last season after finishing 17th and 18th overall, respectively.
In 2012, the Santiago Wanderers celebrated their 120th season since the teams founding in 1892.
Everton won 4–3 on aggregate and is promoted to Primera División.