Karwacki (feminine: Karwacka; plural: Karwaccy) is a surname of Polish language origin. People with this surname include:
David Karwacki (born 1965), Canadian politician Krysten Karwacki (born 1991), Canadian curler Marlena Karwacka (born 1997), Polish racing cyclist Robert L. Karwacki (1933–2014), justice of the Maryland Court of Appeals
See also
Wyrąb Karwacki, a village in the administrative district of Gmina Przasnysz, within Przasnysz County, Masovian Voivodeship, Poland