Anton Lazzaro Moro (1687 in San Vito al Tagliamento – 1764) was an Italian abbot, geologist and naturalist. He was one of the leading advocates of plutonism in the early debate that confronted plutonism to neptunism, making him described by some authors as an ultraplutonist. He was the first to discriminate sedimentary rocks from volcanic ones by studying the rocks of volcanic islands. In his study of the crustaceans, he discovered fossils petrified in mountains that led him to deduce those rocks were once buried in the sea.