The Circuito Costanera, was a Grand Prix circuit in Buenos Aires (Argentina). Two variants are known to have existed under Circuito "Avenida" Costanera and Costanera "Sur" which are listed by a few data sources as circuits used for the 1930, 1932 and 1936 Buenos Aires races. Verifiable records can only confirm the Costanera Norte circuit layouts for the 1951 V Gran Premio General Perón, V Gran Premio Eva Perón, Gran Premio Eva Perón (Ciudad) Sport and the 1957 1000 km de Buenos Aires.