Surname Sosiura (Sosiura 
, Сосюра 
) , around the world, is a rare family name. The cognomen Sosiura is habitual in Eastern Europe, particularly Ukraine, where it is quite a rare surname, Russia, where it is a rare surname, and Belarus, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Ukraine, Russia, and Kazakhstan.