Cognomen Poortman (Poortman 
, คนจน 
) , throughout the world, is a rare surname. The cognomen Poortman is habitual in Netherlands, where it is quite a rare surname, Belgium, where it is a rare surname, and Norway. In absolute terms, this name is the most popular in Netherlands, Belgium, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Poortman | Hungary, Netherlands, South Africa, Belgium, United States |
| คนจน | Thailand |
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karel arnold poortman politician, NL (b. 1808) |
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| christiaan poortman NL (b. 1846) |
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| hugo poortman NL (b. 1858) |
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| johannes jacobus poortman Dutch philosopher, NL (b. 1896) |
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| jan poortman Dutch writer (1897-1984), NL (b. 1897) |
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| robert poortman (b. 1959) |
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| gerd-jan poortman Dutch yacht racer, NL (b. 1976) |
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| peter poortman New Zealand naturalist and scientific collector, NZ |
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| wilco c. poortman |
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| cornelis poortman |
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| huib poortman |
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