Jacek Salij OP (born 19 August 1942, Budy, Wołyń) is a Polish theologian and Thomist, philosopher, Roman Catholic priest, Dominican, translator, writer and publicist. The chief areas of his scientific interests are: history of dogmas, dogmatic theology, theology of God, philosophy of St. Thomas and scholasticism, ethics and bioethics. He is the author of many books, scientific dissertations and translations.