Cognomen Ortner (Ortner 
, Ортнер 
) , all over the world, is a common last name. The surname Ortner is habitual in Austria, where it is quite a common surname, Namibia, where it is quite a rare surname, and Germany. In absolute terms, it most frequently occurs in Austria, Germany, and the United States. Very seldom, Ortner is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ortner | Namibia, Switzerland, Austria, United States, Germany |
| Ортнер | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| martha dorothea ortner (b. 1749) |
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| georg ortner (b. 1754) |
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| anton ortner Austrian architect (1776 - 1862), AT (b. 1776) |
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| franz de paula ortner (b. 1806) |
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| johann baptist ortner AT (b. 1813) |
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| peter ortner AT (b. 1813) |
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| anton ortner AT (b. 1817) |
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| anton ortner (b. 1823) |
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| werigandus adolph ortner (b. 1831) |
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hermann heinz ortner Austrian author, AT (b. 1895) |
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rudolf ortner German architect and painter (1912-1997), DE (b. 1912) |
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| max ortner Austrian librarian (1863-1938), AT (b. 1863) |
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| norbert ortner Austrian physician and internist (1865-1935), AT (b. 1865) |
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| anton ortner DE (b. 1857) |
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| isak ortner holocaust victim, b. 1868-03-12, AT (b. 1868) |
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