Harry Jefferson (November 2, 1946 - ) is a former NASCAR driver from Naches, WA. A former West Series winner, Jefferson competed in twelve Sprint Cup Series events. He earned three top-ten finishes in the Cup Series.
Jefferson's Cup Series debut came in 1973, when he competed at Riverside. Starting 21st in the field of forty, Jefferson had an early oil leak during the event that forced him to finish a disappointing 34th.
Jefferson stepped it up to a four-race schedule during the 1974 season, though his results were quite mixed. Three mechanical DNFs during the year hurt Jefferson's chances, as he finished 27th or worse during that stretch. Some credit, though, should be given to the driver, since most West Coast drivers rarely tried their hand at some of the East Coast Cup races. But Jefferson did, including a start at Charlotte that produced a season-best 7th place run.
Jefferson's best year came in 1975, when he competed in five races to finish 45th in points. After starting the year 32nd at Riverside, Jefferson again decided to try his hand at the East Coast events. He ran extremely well at those tracks, only DNFing just one race and finishing 21st or better three times. Two of those runs were top-tens: a 9th at Atlanta and a career-best 6th at Talladega.
Jefferson stepped it back down to a one-race schedule in the 1976 season, when he struggled yet again at Riverside. This time, Jefferson only lasted fourteen laps before an engine failure left him in last (35th) place.
Jefferson's final career start came in the 1977 season, when he made his first trip to Ontario in three years. It was a respectable race for the driver, falling just five laps down and finishing 18th.