Pyatnitsky (; masculine) or Pyatnitskaya (; feminine) is a Russian surname. It is shared by the following people: Andrey Pyatnitsky (b. 1967), Russian association football player Konstantin Pyatnitsky (1864–1938), Russian journalist, publisher, and memoirist Mitrofan Pyatnitsky (1864–1927), Russian musician, founder of the Pyatnitsky Choir Osip Piatnitsky (Pyatnitsky) (1882–1938), Soviet politician Valery Pyatnitsky (b. 1962), Ukrainian politician
Fictional characters Maxim Arturovitch Pyatnitski, the protagonist of the Pyat Quartet tetralogy by Michael Moorcock
See also Pyatnytsky, Ukrainian form of the last name