Earnhardt is the surname of the following people:

• An American auto racing family, almost all drivers:
  • Ralph Earnhardt (1928–1973), family patriarch
  • Dale Earnhardt Sr. (1951–2001), son of Ralph
  • Teresa Earnhardt (born 1958), owner and CEO of Dale Earnhardt, Inc., widow of Dale Sr. and stepmother of Kerry and Dale Jr.
  • Kerry Earnhardt (born 1969), Dale Sr.'s oldest son
  • Kelly Earnhardt Miller (born 1972), Dale Sr.'s oldest daughter
  • Dale Earnhardt Jr. (born 1974), the best-known and youngest of Dale Sr.'s sons
  • Bobby Dale Earnhardt (born 1987), oldest son of Kerry
  • Jeffrey Earnhardt (born 1989), youngest son of Kerry
• Leon Earnhardt (b. 2001), fictional racer from the Future GPX Cyber Formula series
• Dr. Earnhardt, a fictional character from the 2012 video game Far Cry 3

• Dale Earnhardt, Inc. (DEI), a NASCAR racing team
  • Earnhardt Ganassi Racing, a NASCAR team and the result of a merger by DEI with Chip Ganassi Racing
• 3: The Dale Earnhardt Story, a TV movie
• Earhart
• Earheart