Cognomen Crul (Curl 
, Crul 
) , globally, is quite a common last name. The last name Crul is habitual in Belgium, where it is quite a rare surname, the United States, and Croatia. Measured by absolute frequency, it is commonest in the United States, the United Kingdom, and Indonesia. Much less frequently, Crul is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Curl | Indonesia, Democratic Republic of the Congo, United Kingdom, Canada, United States |
| Crul | Belgium, United Kingdom, Netherlands, Canada, United States |
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cornelis crul Belgian playwright and poet, BE (b. 1500) |
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| j.f. crul (b. 1922) |
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| maurice crul researcher (b. 1961) |
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| tim crul researcher |
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| mirjam crul researcher |
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| floor crul |
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| i. crul |
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| koen crul |
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| adrie crul |
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| ben j.p. crul |
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