Turismo Nacional (National tourism, lit., national touring) popularly known by its acronym TN, is a touring car racing series based in Argentina that has been active since 1961. It is organized by the Asociación de Pilotos de Automóviles de Turismo and is governed by the Automobile Sports Commission of the Argentine Automobile Club. The cars involved are almost standard preparation cars, that is to say practically a road car prepared for competitions. Originally, only models made in Argentina were allowed (hence the name, that is, nationally manufactured), but after Argentina's entry into Mercosur, Brazilian models were allowed.