Family name Trečiokas (Trečiokas 
) , worldwide, is a very rare surname. The surname Trečiokas is characteristic of Northern Europe, particularly Lithuania, where it is a rare surname.
| jonas trečiokas politician (1892-1938), LT (b. 1892) |
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kęstutis trečiokas Lithuanian politician, LT (b. 1957) |
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| vytautas trečiokas (b. 1912) |
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| emilis jokūbas trečiokas LT (b. 1938) |
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