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In all the world, Sydir (Сидор
, Сидір
, Sydir
) is quite a rare masculine first name. The first name Sydir is habitual in Moldova, where it is quite a rare male name, Ukraine, and Kazakhstan, where it is a rare boy's name. Measured by absolute frequency, this name is the most popular in Eastern Europe, particularly Ukraine, Russia, and Moldova. More frequently, Sydir is the last name as well as the forename.