Family name Widhalm (Widhalm 
) , in all the world, is quite a rare cognomen. The cognomen Widhalm is characteristic of Austria, where it is quite a common surname, Bermuda, where it is quite a rare surname, and the United States, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Austria, the United States, and Germany.
| VARIANT | COUNTRY |
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| Widhalm | Germany, Czechia, Austria, United States, Bermuda |
| leopold widhalm Austrian luthier (1722-1776), DE (b. 1722) |
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| martin leopold widhalm DE (b. 1747) |
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| othmar widhalm (b. 1894) |
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| alois widhalm AT (b. 1922) |
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| kurt widhalm Austrian pediatrician, university professor and food scientist, AT (b. 1946) |
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| franz widhalm Austrian association football player, AT (b. 1950) |
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| fritz widhalm Austrian writer, AT (b. 1956) |
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| romana widhalm (b. 1957) |
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| michaela widhalm actress (fl. in the 1980s) |
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| georg widhalm researcher |
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| laurenz widhalm Austrian particle physicist |
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| harald k widhalm researcher |
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| peter widhalm researcher |
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| joshua r widhalm researcher ORCID ID = 0000-0002-2703-4740 |
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| kurt widhalm researcher (ORCID 0000-0001-8700-5573) |
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