Family name Janas (Janas 
, ياناس 
, Жанас 
) , globally, is a common cognomen. The surname Janas is habitual in Poland, where it is quite a common surname, Iraq, where it is quite a rare surname, and Libya. Measured by absolute frequency, it is commonest in Poland, Iraq, and Egypt. Likewise, Janas is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Janas | Germany, Pakistan, Poland, United States, India |
| ياناس | Syria, Saudi Arabia, Egypt, Sudan, Iraq |
| Жанас | Kazakhstan, Ukraine, Kyrgyzstan, Russia, Azerbaijan |
| Янас | Kyrgyzstan, Ukraine, Russia |
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janas losovičius Roman Catholic bishop, LT (b. 1500) |
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john janas American politician, US (b. 1910) |
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| stefan janas (b. 1876) |
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| janas kuruša-vorobjovas (b. 1879) |
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| wincenty janas PL (b. 1891) |
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zbigniew janas Polish politician and deputy, PL (b. 1953) |
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paweł janas Polish footballer and manager, PL (b. 1953) |
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| jan janas (b. 1906) |
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| scepan janas CZ (b. 1912) |
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| marian janas PL (b. 1914) |
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| jaroslav janas (b. 1924) |
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| janas jaščaninas Lithuanian biochemist and author, LT (b. 1940) |
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| janas jaskanis PL (b. 1932) |
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| wacław janas PL (b. 1939) |
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patryk janas PL (b. 1989) |
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