Cognomen Hefty (Hefty 
) , all around the world, is quite a rare last name. The cognomen Hefty is habitual in United Arab Emirates, where it is a rare surname, the United States, and Switzerland. Measured by absolute frequency, it is commonest in the United States, Germany, and United Arab Emirates. Much less frequently, Hefty is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Hefty | Germany, United Arab Emirates, France, United States, Indonesia |
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henry j. hefty American architect, CH (b. 1858) |
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hefty gyula andor Hungarian mountaineer, author of mountaineering literature (1888-1957), HU (b. 1888) |
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friedrich hefty Austro-Hungarian flying ace, SK (b. 1894) |
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| fred k. hefty American politician, US (b. 1871) |
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georg paul hefty German journalist, DE (b. 1947) |
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| ján hefty (b. 1950) |
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| jorge w. hefty chess player (b. 1966) |
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| jonny hefty Danish rapper (b. 1969) |
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| pete hefty college basketball player (1993–1994) Colorado |
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| p scott hefty researcher (ORCID 0000-0002-2303-2465) |
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| kira l hefty researcher (ORCID 0000-0002-6598-1212) |
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