Pietrasiak is a Polish surname. It is a patronymic surname derived from the given name Pietras, a diminutive from the given name Pietr, 'Peter'. Archaic feminine forms: Pietrasiakowa (by husband), Pietrasiakówna (by father).PIETRASIAK Notable people with the surname include:
Adolf Pietrasiak (1916–1943), Polish fighter pilot and officer Dariusz Pietrasiak (born 1980), Polish footballer
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