Ignaz Edler von Born, also known as Ignatius von Born (, , ) (26 December 1742 in Cavnic, Grand Principality of Transylvania, Habsburg Monarchy – 24 July 1791 in Vienna) was a mineralogist and metallurgist. He was a prominent freemason, being head of Vienna's Illuminati lodge and an influential anti-clerical writer. He was the leading scientist in the Holy Roman Empire during the 1770s in the age of Enlightenment.