Last name Calker (Calker 
, קלקר 
) , around the world, is a rare surname. The surname Calker is habitual in Netherlands, where it is a rare surname, Portugal, and Germany, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Calker | Germany, Netherlands, United Kingdom, Portugal |
| קלקר | Israel |
| friedrich van calker German philosopher, DE (b. 1790) |
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| wilhelm van calker German jurist, DE (b. 1869) |
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| darrell calker American composer, US (b. 1905) |
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| jan van calker (b. 1908) |
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| jord van calker (Dutch, 1919–1987), NL (b. 1919) |
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idzard johannes van calker, van Idzard Johannes van Calker, van, teacher at the Dwarsgracht school (Giethoorn, the Netherlands) during 1915-1931, NL |
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