William John Vukovich III (August 31, 1963, Fresno, California, United States – November 25, 1990, Bakersfield, California, United States) was an American race car driver. He was a three-time starter of the Indianapolis 500. The grandson of two-time Indianapolis 500 winner Bill Vukovich and the son of Bill Vukovich II, Vukovich III was the 1988 Indianapolis 500 Rookie of the Year. Billy was killed in a sprint car race at Mesa Marin Raceway in Bakersfield, California, in 1990.

Vukovich became the first third-generation driver to qualify in Indy 500 history. His grandfather was killed while leading the 1955 Indianapolis 500.

He got his start in racing driving for the John Runjavac racing team.