Kornecki, Kornicki, Kornetzky, or Kornitzky is a surname. Notable people with the surname include:
Brigitte Kornetzky (born 1959), Swiss-German indie filmmaker Franciszek Kornicki (1916–2017), Polish fighter pilot Jean-François Kornetzky (born 1982), French football player Mateusz Kornecki (born 1994), Polish handballer Nike Kornecki (born 1982), Israeli sailor Peter Kornicki (born 1950), English Japanologist