Lloyd Ruby (January 12, 1928 - March 23, 2009) was a NASCAR driver from Wichita Falls, TX. He competed in one Nextel Cup Series event in his career. It came in 1967, when Ruby raced at Riverside for Junior Johnson. It was an impressive qualifying effort for the first-time driver, starting eighth in the event. Things went decent in the race, despite a mid-race engine failure, came home in 22nd. Also, he won the 1968 Paul Revere 250, the most prestigious event of the NASCAR Grand American (then Grand Touring) season.
Outside of NASCAR, Ruby raced in the USAC Championship Car series in the 1958-1977 seasons, with 177 career starts, including every Indianapolis 500 race during 1960-1977. He finished in the top ten 88 times, with 7 victories. His best Indy finish was 3rd in 1964. In 1966 he led the Indy 500 for 68 laps.
Ruby also participated in endurance racing and won the 1965 Daytona 2000 km and the 1966 24 Hours of Daytona, both times partnering with Ken Miles. He and Miles also won the 1966 12 Hours of Sebring and the 1966 and 1968 World Sportscar Championship. Ruby also raced in the 1961 United States Grand Prix.
Ruby played a key role in Ford Motor Company's GT40 program in the mid-1960's.
He died on March 23, 2009 at the age of 81. He had just been inducted in 2008 to the Midget Auto Racing Hall of Fame.