Cognomen Grigas (Grigas 
, Григас 
) , all around the world, is quite a rare family name. The cognomen Grigas is habitual in Lithuania, where it is quite a common surname, Estonia, where it is a rare surname, and Uruguay. Not in comparison with a country's population, the name is most common in Lithuania, the United States, and Russia. Very seldom, Grigas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grigas | Lithuania, United States, United Kingdom, Argentina, Germany |
| Григас | Belarus, Russia, Ukraine |
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victor albert grigas photographer, US (b. 1919) |
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| napalys grigas LT (b. 1896) |
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rimantas grigas Lithuanian basketball coach, LT (b. 1962) |
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| grigas valančius LT (b. 1906) |
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| john grigas American football player (1920-2000), US (b. 1920) |
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agnia grigas American political scientist and author, US (b. 1979) |
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victor grigas photographer, video producer, Wikimedian, US (b. 1980) |
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| kazys grigas LT (b. 1924) |
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| gintautas grigas Lithuanian inventor (b. 1936) |
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| algirdas grigas (b. 1931) |
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| romualdas grigas LT (b. 1936) |
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| robertas grigas Lithuanian poet, LT (b. 1960) |
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| jonas grigas LT (b. 1951) |
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| gvidas grigas Lithuanian association football player, LT (b. 1980) |
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| alex t grigas researcher |
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