Surname Waldemar (Waldemar 
, Valdemar 
, Вальдемар 
) , all around the world, is a widespread last name. The cognomen Waldemar is characteristic of Poland, where it is a widespread surname, Reunion, where it is quite a common surname, and Mexico, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Poland, Mexico, and Angola. Also, Waldemar is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Waldemar | Angola, Germany, Poland, Brazil, Mexico |
| Valdemar | Angola, Germany, Guatemala, Brazil, Mexico |
| Вальдемар | Russia, Belarus, Kazakhstan, Ukraine, Lithuania |
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richard waldemar Austrian actor, AT (b. 1869) |
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| charles waldemar Swiss lebensreformer, bioenergeticist, writer, philosopher, CH (b. 1912) |
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| charles waldemar (b. 1912) |
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jarle waldemar Norwegian pastor and writer (b. 1978) |
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| torgeir waldemar Norwegian musician (b. 1974) |
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| anna k waldemar researcher ORCID ID = 0000-0003-2581-1662 |
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| g waldemar researcher |
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| gunhild waldemar researcher |
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| carl waldemar |
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| hans waldemar |
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| carl waldemar |
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