Family name Guenthner (Guenthner 
) , all over the world, is quite a rare last name. The surname Guenthner is characteristic of Germany, where it is a rare surname, the United States, and Austria. Measured by absolute frequency, it most frequently occurs in the United States, Germany, and Canada.
| VARIANT | COUNTRY |
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| Guenthner | Canada, United States, Germany, New Zealand, Austria |
| christoph guenthner American politician, US (b. 1853) |
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| harold r. guenthner agronomist (b. 1936) |
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| louie r. guenthner, jr. American politician, US (b. 1944) |
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| franz guenthner German computational linguist (b. 1946) |
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| oliver guenthner chess player (b. 1966) |
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| nicole guenthner researcher |
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| scott guenthner researcher (ORCID 0000-0002-6660-2245) |
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| christian guenthner researcher |
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| r. scott guenthner |
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