Last name Klopman (Klopman 
) , around the world, is a rare family name. The cognomen Klopman is habitual in Netherlands, where it is quite a rare surname, Israel, where it is a rare surname, and Estonia. Measured by absolute frequency, it is the most numerous in Netherlands, the United States, and Israel.
| VARIANT | COUNTRY |
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| Klopman | Estonia, United States, India, Israel, Netherlands |
| johannes klopman Dutch Righteous Among the Nations, NL (b. 1902) |
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| teunis klopman Dutch Righteous Among the Nations, NL (b. 1904) |
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| hendrikus klopman Dutch Righteous Among the Nations, NL (b. 1906) |
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| gerard klopman Dutch Righteous Among the Nations, NL (b. 1909) |
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| jan klopman Dutch Righteous Among the Nations, NL (b. 1915) |
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| gilles klopman American chemist, US (b. 1933) |
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