Pyatnitsky
Pyatnizki is a family name for the following people:
- Andrei Vladimirovich Pyatnitsky (* 1967), Russian-Uzbek-Soviet football player
- Evgeni Serafimowitsch Pjatnizki (1936–2003), Russian physicist and cyberneticist
- Mitrofan Jefimowitsch Pjatnizki (1864–1927), Russian-Soviet musician and founder of the Pyatnitsky Choir
- Ossip Aronowitsch Pjatnizki (1882–1938), Soviet politician and functionary of the Communist International.
- Vladimir Vasilyevich Pjatnizki (1879–1941), under the religious name Wassijan, bishop and saint of the Russian Orthodox Church