Family name Deiman (Deiman 
) , around the world, is a rare surname. The cognomen Deiman is characteristic of Netherlands, where it is quite a rare surname, Colombia, where it is a very rare surname, and the United States. Measured by absolute frequency, this name is the most popular in Netherlands, the United States, and Thailand. Much less frequently, Deiman is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Deiman | Peru, Colombia, Thailand, United States, Netherlands |
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johan rudolph deiman Dutch physician and chemist, DE (b. 1743) |
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| werner j. deiman Professor of literature (1937-2009), US (b. 1937) |
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| frank deiman Dutch conductor, composer and pianist, NL (b. 1958) |
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| frederik ernst deiman researcher (ORCID 0000-0001-9793-4683) |
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| jan willem deiman NL (b. 1986) |
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