Bartosiewicz () is a surname of Polish-language origin. It may refer to:
Bohdan Bartosiewicz (1918–2015), Polish basketball and volleyball player and coach Edyta Bartosiewicz (born 1965), Polish rock singer, composer and songwriter Oliwia Bartosiewicz (born 2001), Polish rapper and singer Peter Bartosiewicz (born 1942), pair skater who competed for Czechoslovakia Thomas J. Bartosiewicz (1948–2005), New York state senator 1976–1988
See also Bartoszewicz