Petrusewicz is a Polish gender-neutral surname of Eash-Slavic origin. Archaic feminine forms: Petrusewiczowna (maiden name), Petrusewiczowa (surname by husband). It should be distinguished from the spelling Pietrusiewicz which conforms to the Polish phonology, which is usually a by-name in the noble Polish clan Wysoczański. It is a patronymic surname derived from the East Slavic given name Petrus', a diminutive of Piotr/Petro/Piatro (Peter).
Russian-language transliteration: Petrusevich, Belarusian: Petrusevich, Ukrainian: Petrusevych, Lithuanianized form: Petrusevičius. Latvian: Petrusēviča (feminine), Petrusēvičs (masculine)
Notable people with this surname include: