Rudnitsky, Rudnytsky, Rudnytskyi, or Rudnitski (feminine: Rudnitskaya or Rudnytska) is a transliteration of the Russian or Ukrainian-language spelling of the Polish toponymic surname Rudnicki or Rudnycki, of places named Rudnica. The surname may refer to:
Jon Rudnitsky, American actor and comedian Maria Rudnitskaya, Russian Soviet realist painter, graphic artist, and art teacher Milena Rudnytska, Ukrainian intellectual and politician Jaroslav Rudnycky, Ukrainian-Canadian folklorist Ivan L. Rudnytsky, Ukrainian-Canadian historian Ivan Rudnytskyi, Ukrainian footballer Ancestral surname of Paul Rudd (1969-), American actor