Wischnitzer or Wishnitzer () is a surname. Notable people with the surname include:
Avner Wishnitzer (born 1976), Israeli historian, academic and peace activist Mark Wischnitzer (1882–1955), Russian-born scholar of Jewish history Rachel Wischnitzer (1885–1989), Russian-born architect and art historian, wife of Mark Yuval Wischnitzer (born 1947), Israeli athlete
See also Max Wiznitzer, American pediatric neurologist
de:Wischnitzer he:וישניצר