Last name Donahoo (Donahoo 
) , in the entire world, is quite a rare cognomen. The last name Donahoo is habitual in the United States, where it is a rare surname, Australia, and New Zealand. Measured by absolute frequency, it is commonest in the United States, Australia, and Canada.
| VARIANT | COUNTRY |
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| Donahoo | Canada, New Zealand, Australia, United Kingdom, United States |
| john donahoo American architect, US (b. 1786) |
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| sydney donahoo cricketer (1871-1946), AU (b. 1871) |
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| kate donahoo American judoka, US (b. 1966) |
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| stanley a donahoo researcher |
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| joyce v. donahoo medical researcher |
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| michael jeff donahoo Ph.D. Georgia Institute of Technology 1998 |
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| sara freeman donahoo American artist |
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| ryan donahoo botanist |
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| alvin william donahoo Ph.D. University of Minnesota-Minneapolis 1954 |
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| william troy donahoo researcher |
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