Ralph Dale Earnhardt, Sr. (April 29, 1951 – February 18, 2001) was an American race car driver, best known for his involvement in stock car racing for NASCAR. Born to race car driver Ralph Lee Earnhardt, Earnhardt began his career in 1975 when he drove in the 1975 World 600 at Charlotte Motor Speedway as part of the Winston Cup Series (later the Sprint Cup Series).

During the course of his career, Earnhardt won a total of 76 races (including one Daytona 500 victory in 1998). He earned seven championships, which is tied for the most all time with Richard Petty. His aggressive driving style earned him the nickname "The Intimidator".

While driving in the 2001 Daytona 500, Earnhardt died of basilar skull fracture in a last-lap crash at Daytona International Speedway on February 18, 2001. He has been inducted into numerous halls of fame, including the inaugural class of the NASCAR Hall of Fame.

Earnhardt was born in Kannapolis, North Carolina, on April 29, 1951, to Martha Coleman and Ralph Lee Earnhardt, who was then one of the best short-track drivers in North Carolina. Ralph won his one and only NASCAR Sportsman Championship in 1956 at Greenville Pickens Speedway in Greenville, South Carolina. Although Ralph did not want his son to follow in his footsteps, Earnhardt would not be persuaded to give up his dream of racing, dropping out of school to race. Ralph was a hard teacher for Earnhardt, and after Ralph died of a heart attack at his home in 1973, it took many years before Earnhardt felt as though he had finally "proven" himself to his father. Earnhardt had four siblings, Danny, Randy, Cathy, and Kaye.