Cognomen Сикорский (Sikorski 
, Sikorskii 
, Сикорский 
, among others...) , in the entire world, is a common last name. The surname Сикорский is habitual in Poland, where it is quite a common surname, Belarus, and Germany, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Poland, the United States, and Germany. Also, Сикорский is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Sikorski, Sikorsky | Poland, Brazil, France, Germany, United States |
| Sikorskii | Belarus, Ukraine, China, Russia, United States |
| Сикорский | Belarus, Ukraine, Russia, Kyrgyzstan, Kazakhstan |
| Sikorskij | Belarus |
| Sikorskiy | Belarus, Estonia, Russia, Brazil, United States |
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иван алексеевич сикорский (1842-1919), UA (b. 1842) |
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францишек сикорский Polish general (1889-1940), UA (b. 1889) |
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сикорский, михаил иванович UA (b. 1923) |
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сикорский, анатолий сергеевич UA (b. 1956) |
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| сикорский, сергей иванович BY (b. 1907) |
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| сикорский, владимир иосифович UA (b. 1916) |
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| сикорский, степан харитонович UA (b. 1918) |
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| сикорский, николай ануфриевич UA (b. 1920) |
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| николай михайлович сикорский RU (b. 1921) |
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| сикорский, вадим витальевич RU (b. 1922) |
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| сикорский, всеволод михайлович BY (b. 1923) |
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| сикорский, игорь антонович Russian agronomist, RU (b. 1934) |
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сикорский, игорь александрович Ukrainian footballer, UA (b. 1988) |
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| сикорский, вилен владимирович RU (b. 1932) |
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| ежи сикорский LT (b. 1935) |
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Ян, Игорь, Игнат, Тимур, Роман, Федор, Виорел, Кирилл, Максим, Михаил, Андрей, Андрий, Богдан, Никита, Виктор, Леонид, Сергей, Руслан, Фабиан, Эдуард, Алексей, Альберт, Вилен, Вадим, Денис, Данис, Юра, Марк, Миша, Петр, Пётр, Дима, Ваня, Влад, Олег, Илья, Георгий, Иван, Стас, Юрий, Костя, Антон, Артем, Артур, Артём, Борис, Павел, Данил, Егор, and Дмитрий