Family name Poorthuis (Poorthuis 
) , across the world, is a rare last name. The cognomen Poorthuis is habitual in Netherlands, where it is quite a rare surname, Germany, where it is a rare surname, and Denmark, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Poorthuis | Germany, Denmark, Netherlands, United States |
|
frank poorthuis Dutch journalist, NL (b. 1956) |
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| marcel poorthuis Dutch theologian, university professor and writer, NL (b. 1955) |
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| ate poorthuis researcher |
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| michiel poorthuis researcher |
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| lucette poorthuis Nederlands; schilder, NL |
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| rogier b poorthuis researcher (ORCID 0000-0002-7292-4072) |
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