Sebastian Petrycy of Pilzno (born 1554 in Pilzno – died 1626 in Kraków), in Latin known as Sebastianus Petricius, was a Polish philosopher and physician. He lectured and published notable works in the field of medicine but is principally remembered for his masterly Polish translations of philosophical works by Aristotle and for his commentaries to them. Petrycy made major contributions to nascent Polish philosophical terminology.