Family name Rooij (Rooij 
, Руйи) , in all the world, is a common surname. The family name Rooij is characteristic of Netherlands, where it is quite a common surname, Belgium, where it is quite a rare surname, and Latvia, where it is a rare surname. In absolute terms, it is commonest in Netherlands, Belgium, and Taiwan.
| VARIANT | COUNTRY |
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| Rooij | Germany, Indonesia, Belgium, Taiwan, Netherlands |
| embertus joachim van rooij (b. 1779) |
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| johannes adrianne de rooij Dutch photographer, NL (b. 1820) |
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| joannes nicolaas de rooij Dutch photographer, NL (b. 1836) |
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| willem hendrik de rooij Dutch photographer, NL (b. 1849) |
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| anton jacobus de rooij Dutch photographer, NL (b. 1851) |
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maarten rooij Dutch university teacher, NL (b. 1906) |
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| johannes embrosius van de wetering de rooij Dutch painter, NL (b. 1877) |
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wim van rooij Dutch actor, NL (b. 1932) |
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| nelly de rooij Dutch zoologist and herpetologist, NL (b. 1883) |
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| jakobus rooij holocaust victim, b. 1884-06-07 (b. 1884) |
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| johan cornelis de rooij NL (b. 1877) |
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| thomas de rooij Dutch Righteous Among the Nations, NL (b. 1888) |
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| joseph rooij holocaust victim, b. 1890-12-08 (b. 1890) |
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| gijsberta de rooij Dutch Righteous Among the Nations, NL (b. 1892) |
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karel de rooij Dutch actor, NL (b. 1946) |
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