Surname Markwardt (Markwardt 
) , throughout the world, is quite a rare last name. The cognomen Markwardt is habitual in Germany, where it is quite a rare surname, Denmark, where it is a rare surname, and the United States. Measured by absolute frequency, it is commonest in Germany, the United States, and Brazil.
| VARIANT | COUNTRY |
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| Markwardt | Canada, Brazil, United States, Denmark, Germany |
| bruno markwardt German germanist, DE (b. 1899) |
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| fritz markwardt German pharmacologist (1924-2011), DE (b. 1924) |
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| karen markwardt German television presenter, DE (b. 1974) |
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| craig markwardt researcher ORCID ID = 0000-0001-9803-3879 |
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| fritz markwardt researcher |
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| stefan markwardt Dr. rer. nat. Technische Universität München 2009 |
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| ulf markwardt Dr.-Ing. Technische Universität Dresden 2004 |
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| nils markwardt German journalist, DE (b. 1986) |
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| pk markwardt |
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| ernst markwardt |
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