Cognomen Gretzinger (Gretzinger 
) , all over the world, is a rare family name. The last name Gretzinger is habitual in Liechtenstein, where it is quite a rare surname, Germany, where it is a rare surname, and Canada. In absolute terms, it most frequently occurs in the United States, Germany, and Canada.
| VARIANT | COUNTRY |
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| Gretzinger | Australia, Germany, Liechtenstein, Canada, United States |
| jerry gretzinger American folk artist and fashion designer (b. 1942) |
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| bert gretzinger Canadian male curler, CA (b. 1951) |
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| thomas gretzinger researcher (ORCID 0000-0001-5712-5101) |
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| anna gretzinger researcher |
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| steffany gretzinger American musician, US (b. 1984) |
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| heinrich gretzinger |
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