De Tomaso Automobili Ltd. is an Italian car-manufacturing company. It was founded 1959 by Alejandro de Tomaso in Modena. It originally produced various sports prototypes and auto racing vehicles, including a Formula One car for Frank Williams Racing Cars in 1970. Most of the funding for the automaker came from Amory Haskell Jr.

Alejandro de Tomaso was an Argentine racing driver and businessman. His name is sometimes seen in an Italianised form as Alessandro de Tomaso. He participated in two Formula One World Championship Grands Prix, debuting on 13 January 1957. He scored no championship points. He later founded the Italian sports car company De Tomaso Automobili in 1959.