Cognomen Šeško (Šeško 
, Шешко 
) , in all the world, is quite a rare last name. The surname Šeško is habitual in Belarus, where it is quite a common surname, Slovenia, where it is quite a rare surname, and Ukraine, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Eastern Europe, particularly Belarus, Russia, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Šeško | Slovenia, Croatia |
| Шешко | Ukraine, Kazakhstan, Belarus, Russia, Kyrgyzstan |
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jože šeško SI (b. 1908) |
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benjamin šeško Slovene association football player, SI |
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| darinka šeško SI |
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| leander šeško SI |
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| dragica šeško SI |
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