The 2009 Copa Nextel Stock Car season was the 31st Stock Car Brasil season. It began on March 29 at Interlagos and ended on December 6 at same circuit after twelve rounds.
This season introduced a new tubular chassis JL G-09 similar to DTM, replacing the model that was used since 2000. Before the start of the championship, Mitsubishi announced that left the championship. Cacá Bueno won his third championship.
All drivers were Brazilian-registered.
All races were held in Brazil.