Family name Earnhardt (Earnhardt 
) , in the world, is quite a rare surname. The family name Earnhardt is characteristic of the United States, where it is a rare surname, New Zealand, where it is a very rare surname, and Costa Rica. Not in comparison with a country's population, it most frequently occurs in the United States, Canada, and Philippines.
| VARIANT | COUNTRY |
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| Earnhardt | Philippines, United Kingdom, Canada, United States, Costa Rica |
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dale earnhardt American racing driver (1951-2001), US (b. 1951) |
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teresa earnhardt American stock car racing team owner, US (b. 1958) |
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dale earnhardt junior American racecar driver, US (b. 1974) |
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| ralph earnhardt NASCAR driver, US (b. 1928) |
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| tex earnhardt American entrepreneur (b. 1930) |
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jeffrey earnhardt American stock car racing driver, US (b. 1989) |
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| kerry earnhardt American stock car racing driver, US (b. 1969) |
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| adam earnhardt college basketball player (1998–2001) North Carolina-Asheville |
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| bobby dale earnhardt American auto racing driver, US (b. 1987) |
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