Alexiewicz or Aleksiewicz is a Polish surname of East Slavic origin. It is a Patronymic surname literally meaning "son of Alexius". The Belarusian spelling of the surname is Alexievich. Notable people with this surname include:
Andrzej Alexiewicz (1917–1995), Polish mathematician (1884–1957), Polish military physician Norbert Aleksiewicz (1948–1994), Polish politician Svetlana Alexievich (born 1948), Belarusian writer