Earnhardt is the surname of the following people:
- Dale Earnhardt Sr., (1951 – 2001), US-American race car driver
- Dale Earnhardt Jr., (b. 1974), US-American race car driver, son of Dale Earnhardt Sr.
- Jeffrey Earnhardt (b. 1989), US-American race car driver, son of Kerry Earnhardt
- Kerry Earnhardt (b. 1969), US-American race car driver, son of Dale Earnhardt Sr.
- Leon Earnhardt (b. 2001), fictional racer from the Future GPX Cyber Formula series
- Ralph Earnhardt (1928 - 1973), US-American race car driver, father of Dale Earnhardt Sr.
- Teresa Earnhardt, owner and CEO of Dale Earnhardt, Inc., widow of Dale Earnhardt Sr.