Last name Haefner (Haefner 
) , globally, is quite a rare cognomen. The family name Haefner is characteristic of Bermuda, where it is quite a common surname, Switzerland, where it is quite a rare surname, and Germany. Measured by absolute frequency, it most frequently occurs in Germany, the United States, and Switzerland.
| VARIANT | COUNTRY |
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| Haefner | Germany, Austria, Switzerland, United States, Canada |
| karl haefner (b. 1814) |
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mickey haefner All American baseball player, US (b. 1912) |
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harold haefner Swiss geographer, CH (b. 1933) |
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| eduard haefner (b. 1878) |
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marsha haefner politician, US (b. 1951) |
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| viktor haefner (b. 1896) |
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| walter haefner Swiss businessman (1910-2012), CH (b. 1910) |
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| martha maria haefner (b. 1912) |
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| günther haefner (b. 1924) |
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| klaus haefner German biophysicist and computer scientist, DE (b. 1936) |
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| martin haefner Swiss former billionaire heir, the son of Walter Haefner, CH (b. 1953) |
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| thomas haefner chess player (b. 1956) |
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| james w. haefner (b. 1947) |
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| randy haefner college basketball player (1976–1978) Notre Dame |
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| ralf m haefner researcher ORCID ID = 0000-0002-5031-0379 |
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