Ralph Lee Earnhardt (February 23, 1928 – September 26, 1973) was an American stock car racer. He was the father of Dale Earnhardt, Sr.; the grandfather of Dale Earnhardt, Jr., Kelley Earnhardt Miller,Taylor Putnam, and Kerry Earnhardt, and great grandfather of Jeffrey Earnhardt and Bobby Dale Earnhardt. Earnhardt helped get Bobby Isaac his start in racing.