Last name Ostapchuk (Остапчук 
, Ostapchuk 
, אסטפצ'וק 
) , all over the world, is a common cognomen. The family name Ostapchuk is characteristic of Eastern Europe, particularly Ukraine, where it is quite a common surname, Belarus, where it is quite a rare surname, and Russia.
| sergey ostapchuk Russian swimmer, RU (b. 1976) |
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| andrey n ostapchuk researcher |
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| philomena ostapchuk researcher |
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| alexey a ostapchuk researcher (ORCID 0000-0001-9505-4025) |
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| tetyana ostapchuk (b. 1975) |
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| andrei ostapchuk |
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| yekaterina o ostapchuk researcher |
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