The Audi V8 (Typ 4C) is a four-door, full-size luxury sedan, built by Audi in Germany from 1988 to 1993, as the company's flagship model. It was the first car from Audi to use a V8 engine, and also the first Audi to combine a quattro system with an automatic transmission. Early cars used 3.6-litre V8s, while later cars featured a 4.2-litre version of the engine. The Audi V8 was replaced by the Audi A8 in 1994, although the A8 was not sold in North America until 1996.

The competition model of the Audi V8 won back-to-back Deutsche Tourenwagen Meisterschaft driver's titles in 1990 and 1991, with the championship winners being Hans-Joachim Stuck and Frank Biela respectively. Audi was the first company to win back-to-back DTM titles.

Until the introduction of the Audi V8 with an eight-cylinder engine in 1988, the Audi 200 was the top model in Audi's model range.