Janowicz is a Polish language surname. Notable bearers include:Jerzy Janowicz, Polish professional tennis player Mikolaj Janowicz Kiezgajlo, Lithuanian: Mykolas Kęsgaila Valimantaitis, Lithuanian nobleman from Deltuva Ryszard Pędrak-Janowicz, Polish luger Stanislaw Janowicz Kiezgajlo, Lithuanian nobleman Victor Felix "Vic" Janowicz (1930–1996), American football halfback
