Last name Koppejan (Koppejan 
) , in the world, is a rare cognomen. The family name Koppejan is habitual in Netherlands, where it is quite a rare surname, Switzerland, where it is a rare surname, and Canada, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Koppejan | United Kingdom, Germany, Netherlands, Switzerland, Canada |
|
ad koppejan Dutch politician, NL (b. 1962) |
|
| ary koppejan photographer (1919-2013), NL (b. 1919) |
|
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| helene koppejan Dutch astrologer and entrepreneur (b. 1927) |
|
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| victor koppejan researcher |
|
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| hester koppejan researcher (ORCID 0000-0002-6046-9113) |
|
|
| j. koppejan |
|