John Andrew Andretti was an American professional race car driver. He won individual races in CART, IMSA GTP, Rolex Sports Car Series, and NASCAR during his career. A member of the Andretti racing family, he was the son of Aldo Andretti, older brother of racer Adam Andretti, nephew of Mario Andretti, and the cousin to CART drivers Michael and Jeff Andretti. He is also the first cousin once-removed of Marco Andretti.

Aldo Andretti was an American racing driver and entrepreneur, the twin brother of Mario Andretti and the father of John Andretti and Adam Andretti. He was the uncle of Michael Andretti and Jeff Andretti, great-uncle of Marco Andretti, and grandfather of Jarett Andretti. Aldo and Mario were identical twins.