Surname Soy (Soja 
, Soi 
, Soy 
) , worldwide, is a common cognomen. The last name Soy is habitual in Kenya, where it is quite a common surname, Turkey, and Macao, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in India, Turkey, and Kenya. Much less frequently, Soy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Soja | Nigeria, Indonesia, Poland, Malaysia, India |
| Soi | Nigeria, Myanmar, Indonesia, Kenya, India |
| Soy | Myanmar, Indonesia, Turkey, Kenya, India |
| Сой | Russia, Ukraine, Kazakhstan |
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josep soy i cambras Spanish sculptor (1888-1935), ES (b. 1888) |
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| emmanuel soy French novelist (1887-1968), FR (b. 1887) |
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| hari charan soy Indian politician, IN (b. 1922) |
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| joaquim soy espuña Spanish bullfighter, ES (b. 1924) |
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| xavier soy soler Spanish politician, ES (b. 1950) |
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| antoni soy i casals Catalan politician, economist and university professor, ES (b. 1950) |
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| vijay singh soy Indian politician, IN (b. 1956) |
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| cristina soy i aumatell Spanish library scientist (1971-), ES (b. 1971) |
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| mehmet soy researcher ORCID ID = 0000-0003-1710-7018 |
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| dolors soy researcher |
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| soy ty kheang researcher |
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| dibakar soy Indian Ho-language author, IN |
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| isabelle de hamal de soy |
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| ermisenda soy |
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| selay soy Indian boxer, IN |
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