Cognomen O'Daniel (O'Daniel 
) , in the world, is a rare family name. The last name O'Daniel is characteristic of the United States, where it is a rare surname, Australia, and New Zealand, where it is a very rare surname. In absolute terms, it is commonest in the United States, Australia, and Germany.
| VARIANT | COUNTRY |
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| O'Daniel | Germany, United Kingdom, Philippines, Australia, United States |
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victor francis o'daniel American Catholic priest and professor, US (b. 1868) |
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w. lee o'daniel American politician, US (b. 1890) |
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john w. o'daniel United States Army general (1894-1975), US (b. 1894) |
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| herbert o'daniel professor of mineralogy, Universitat Munich, DE (b. 1903) |
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| walter o'daniel (born 1917) (b. 1917) |
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| molly o'daniel (1922-1996), US (b. 1922) |
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| william l. o'daniel American politician, US (b. 1923) |
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| ed o'daniel American politician, US (b. 1938) |
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dorian o'daniel American football player (born 1994), US (b. 1994) |
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| alison o'daniel British visual artist, GB (b. 1979) |
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| noah o'daniel college basketball player (1993–1996) Tennessee-Martin; Central Connecticut State |
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| julianne m o'daniel researcher ORCID ID = 0000-0001-5843-4432 |
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| nicky o'daniel American actress, US |
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| curt o'daniel college basketball player (1963–1965) Auburn |
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