Family name Sajko (Sajko 
, Сайко 
) , globally, is quite a common last name. The surname Sajko is habitual in Southern Europe, particularly Croatia, where it is quite a common surname, Slovenia, and Montenegro. In absolute terms, it is the most numerous in Eastern Europe, particularly Ukraine, Russia, and Belarus. Very seldom, Sajko is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Sajko | Serbia, Poland, Slovakia, Croatia, Slovenia |
| Сайко | Bulgaria, Russia, Kazakhstan, Ukraine, Belarus |
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mako sajko SI (b. 1927) |
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ivana sajko Croatian writer, HR (b. 1975) |
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| rosanda sajko Slovenian author and director, SI (b. 1930) |
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| jerzy sajko (b. 1939) |
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| sara sajko researcher |
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| jožica sajko SI |
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| iztok sajko SI |
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| špela sajko SI |
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| matija sajko SI |
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| gorazd sajko SI |
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| monika sajko |
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| mojca čižek-sajko SI |
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| marjan sajko SI |
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