ASA (Autocostruzioni Società per Azioni) was an Italian automobile manufacturer active from 1961 to 1969, who is known for manufacturing the ASA 1000 GT. This car was developed by Ferrari engineers in the late 1950s as a less expensive, compact alternative to existing Ferrari GT cars. ASA used inline-four and straight-six engines derived from the "250" 3-litre V12 designed by Gioacchino Colombo. The chassis was developed by Giotto Bizzarrini and was derived from the tubular frame chassis of the 250 GTO.

The prototype that would become the ASA 1000 GT was first presented by Carrozzeria Bertone (Geneva 1961) under the name "Mille". Following this debut in late 1961, Enzo Ferrari decided to not sell the new car as a Ferrari and entrusted production to a close friend, Oronzio de Nora. The car was manufactured in Milan by a newly formed company called ASA (owned by the De Nora Electrochemical Group) from 1964 to 1969. The 1000 GT model was officially introduced in 1962, but due to production difficulties series production did not begin until 1964.