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Surname Tretjakova (Tretjakova
, Третйакова
) , around the world, is a rare family name. The cognomen Tretjakova is habitual in Northern Europe, particularly Latvia, where it is quite a rare surname, Lithuania, and Estonia. Not in comparison with a country's population, it is the most numerous in Latvia, Azerbaijan, and Lithuania.
| VARIANT | COUNTRY |
|---|---|
| Tretjakova | Estonia, Azerbaijan, Lithuania, Russia, Latvia |
| Третйакова | Russia |