Cognomen Sidorchuk (Сидорчук 
, Sidorchuk 
) , throughout the world, is a common last name. The cognomen Sidorchuk is characteristic of Ukraine, where it is quite a common surname, Belarus, and Kazakhstan, where it is quite a rare surname. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Ukraine, Russia, and Belarus.
| VARIANT | COUNTRY |
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| Сидорчук | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Sidorchuk | Russia, Belarus, United States, Canada, Ukraine |
| yosef sidorchuk Ukrainian Righteous Among the Nations, UA |
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| anna sidorchuk researcher |
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| zofia sidorchuk Ukrainian Righteous Among the Nations, UA |
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| ekaterina alekseevna sidorchuk Russian acarologist (1981–2019), RU (b. 1981) |
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| volodymir sidorchuk UA |
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| viktoria sidorchuk Belarusian association football player, BY |
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Mr, Anton, Chris, Carla, Craig, Boris, Katya, Pavel, Roman, Della, Alena, Denis, Linda, James, Julia, Tanya, Nikki, Elena, Vadim, Irina, Yulia, Devin, Sasha, Maxim, Yana, Ms, Kim, Mark, Alla, Andy, Anna, Kate, Petr, Ross, Roxy, Ryan, Luda, John, Nick, Nina, Erin, Ilia, Ivan, Igor, Olga, Oleg, Yuriy, and Maksim