Bilski (feminine: Bilska) is a Polish toponymic surname derived from one of places named Bilsko. It may also be derived from "Bielski".[1] Notable people with the surname include:
- Arkadiusz Bilski (born 1973), Polish football manager and former player
- Benjamin Bilski
- Bernard L. Bilski, lead petitioner in the 2010 U.S. Supreme Court case Bilski v. Kappos and appellant its 2008 Federal Circuit predecessor case In re Bilski
- Olha Bilska, birth name of Olha Petliura (1885-1959), spouse of Ukrainian political leader Symon Petliura