Family name Cahya (Cahya 
) , globally, is a common surname. The last name Cahya is habitual in Indonesia, where it is quite a common surname, Taiwan, where it is quite a rare surname, and Hong Kong, where it is a rare surname. Measured by absolute frequency, the name is most common in Indonesia, Taiwan, and Malaysia. Likewise, Cahya is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Cahya | Taiwan, United Arab Emirates, Indonesia, Malaysia, Saudi Arabia |
| indra cahya ID (b. 1961) |
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| indra cahya Indonesian political candidate, ID |
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| shamila cahya Indonesian actress, ID (b. 1982) |
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| yoga dirga cahya Indonesian politician, ID (b. 1986) |
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| syaiful cahya Indonesian footballer, ID (b. 1992) |
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