Family name Олийник (Oliynyk 
, Олийник 
, Oliinik 
) , in the entire world, is quite a rare cognomen. The last name Олийник is habitual in Latvia, where it is quite a rare surname, Cyprus, and Ukraine, where it is a rare surname. Not in comparison with a country's population, it is commonest in Russia, Ukraine, and the United States. Much less frequently, Олийник is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oliynyk | Spain, United States, Afghanistan, Italy, Ukraine |
| Олийник | Russia, Kazakhstan, Ukraine |
| Oliinik | Georgia, Canada, United States, Russia, Ukraine |
| Oliynik | Poland, Latvia, United States, Italy, Ukraine |
| олийник митрофан гервасеевич UA (b. 1906) |
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| олийник василий йонович UA (b. 1926) |
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| олийник владимир юрьевич Ukrainian military personnel, UA (b. 1985) |
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| олийник, андрей Lithuanian canoeist, LT (b. 1987) |
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| олийник александра степановна RU |
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| олийник иван анатольевич Ukrainian military personnel (1993-2014), UA (b. 1993) |
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Яна, Виктор, Лариса, Оксана, Сергей, Степан, Михайло, Алексей, Богдан, Николай, Ярослав, Катерина, Владимир, Светлана, Александр, Анастасия, Володимир, Виталий, Андрей, Михаил, Тарас, Анна, Петр, Нина, Віра, Иван, Іван, Мария, Марія, Артем, Ганна, Павло, Петро, Любов, Олена, Ольга, Ирина, Елена, Парасковія, and Александра