Otto Stuppacher (3 March 1947 – 13 August 2001) was a racing driver from Vienna, Austria. He competed in hill-climbs and sports car racing before entering 3 Formula One Grands Prix with the ÖASC Racing Team in , with a Tyrrell 007. He was refused entry to the 1976 Austrian Grand Prix, along with teammate Karl Oppitzhauser, despite trying to raise a petition from the other teams.