Cognomen Oskam (Oskam 
) , around the world, is quite a rare last name. The family name Oskam is habitual in Netherlands, where it is quite a common surname, New Zealand, where it is a rare surname, and Norway. Not in comparison with a country's population, it is the most numerous in Netherlands, the United States, and Canada.
| VARIANT | COUNTRY |
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| Oskam | Australia, Netherlands, Canada, United States, New Zealand |
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gerard oskam Dutch chess player, NL (b. 1880) |
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| arie oskam Dutch Righteous Among the Nations, NL (b. 1889) |
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| elisabeth oskam Dutch Righteous Among the Nations, NL (b. 1890) |
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| maria oskam Dutch Righteous Among the Nations, NL (b. 1899) |
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| johanna oskam Dutch Righteous Among the Nations, NL (b. 1899) |
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| marius oskam Dutch Righteous Among the Nations, NL (b. 1899) |
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| wilhelmina oskam Dutch Righteous Among the Nations, NL (b. 1909) |
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peter oskam Dutch politician, judge and football referee, NL (b. 1960) |
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gerda oskam Historian from the Netherlands, NL (b. 1961) |
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| bertus oskam NL (b. 1909) |
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| risje oskam Dutch Righteous Among the Nations, NL (b. 1922) |
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| wim oskam Dutch photographer, NL (b. 1954) |
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| maureen oskam badminton player, NL (b. 1958) |
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| johan oskam (b. 1949) |
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| judy oskam American academic in journalism and mass communication |
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