Surname Kalmijn (Kalmijn 
) , in the entire world, is a very rare family name. The cognomen Kalmijn is habitual in Netherlands, where it is a rare surname, the United Kingdom, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Kalmijn | United Kingdom, United States, Netherlands |
| adrianus j. kalmijn biologist, NL (b. 1933) |
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| matthijs kalmijn researcher (ORCID 0000-0001-5217-1897) |
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| jelger a kalmijn researcher |
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| matthijs kalmijn |
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