Surname Klerx (Klerx 
) , across the world, is a rare cognomen. The surname Klerx is habitual in Netherlands, where it is quite a rare surname, Germany, where it is a rare surname, and Portugal, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Klerx | Germany, Netherlands, Spain, Portugal, United States |
| heinrich klerx German politician (1890-1951), DE (b. 1890) |
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| hans klerx Dutch conductor, NL (b. 1943) |
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| maria klerx NL |
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| sacha klerx |
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