Alfred Unser is a former American automobile racing driver, the younger brother of Bobby Unser and father of Al Unser, Jr.. He is the second of three men to have won the Indianapolis 500-Mile Race four times, the fourth of five to have won the race in consecutive years, and is the only person to have both a sibling and child as fellow winners. Al's brother Jerry and nephews Johnny and Robby have also competed in the 500.