Michel Têtu, born 6 August 1941, is a French engineer best known as a designer of racing sports cars and Formula 1 (F1) cars for marques such as Ligier, Alfa Romeo, and Renault.

The Ligier JS3 is a sports-racing car built by Automobiles Ligier. It was unveiled in 1971 and ended its competition life the same year. Only one JS3, chassis JS3-01, was ever built.