Cognomen Wojtusiak (Wojtusiak 
) , in the world, is a rare surname. The family name Wojtusiak is habitual in Poland, where it is a rare surname, the United States, where it is a very rare surname, and France. More prevalently, Wojtusiak is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Wojtusiak | United Kingdom, Spain, United States, Poland, France |
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janusz wojtusiak Polish entomologist, PL (b. 1942) |
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| roman józef wojtusiak Polish zoologist and ethologist, PL (b. 1906) |
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| edward wojtusiak (b. 1905) |
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| janusz wojtusiak Ph.D. George Mason University 2007 |
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