Circuito Retiro
{{Motorsport venue
| Name = Circuito Retiro
| Location = Retiro, Buenos Aires
| Time = UTC−03:00
| Coordinates = {{coord|34|35|02|S|58|22|23|W|region:AR_type:landmark|format=dms|display=inline,title}}
| Image = 250px
| Image_caption = Grand Prix Circuit (1941, 1947)
| Events = Buenos Aires Grand Prix (1941, 1947)
| Opened = 1941
| Closed = 1947
| Layout1 = Grand Prix Circuit (1941, 1947)
| Length_km = 2.410
| Length_mi = 1.498
| Turns = 6
| Record_time = 1:06.000
| Record_driver = {{flagicon|ITA|1946}} Luigi Villoresi
| Record_car = Maserati 4CL
| Record_year = 1947 (I)
| Record_class = Fuerza Libre
}}
The Circuito Retiro, commonly known as the Retiro Circuit was a Grand Prix street circuit in Buenos Aires (Argentina). The {{cvt|2.410|km|mi|abbr=on}} circuit is best known for hosting the first official Buenos Aires Grand Prix (I) Gran Premio Ciudad de Buenos Aires, official name: Gran Premio Juan Domingo Perón) on February 9, 1947, as the first organized international event by the Automóvil Club Argentino.{{cite web |title=Retiro 1941 |url=http://www.kolumbus.fi/leif.snellman/gp401.htm#44 |archive-url=https://web.archive.org/web/20160303170330/http://www.kolumbus.fi/leif.snellman/gp401.htm#44 |publisher=Snellman / Muelas |archive-date=3 March 2016 |access-date=20 March 2014 |url-status=dead}}{{cite web |title=Retiro 1947 |url=http://www.jmfangio.org/historial1947.htm |publisher=jmfangio.org |access-date=20 March 2014}}
The 1947 Grand Prix at Retiro marks the start of the South American Temporada racing series.{{cite web |title=La Temporada |url=http://www.velocetoday.com/racing/racing_27.php |publisher=velocetoday.com |access-date=21 March 2014}}