Pier Andrea Saccardo (23 April 1845 in Treviso, Treviso – 12 February 1920 in Padua) was an Italian botanist and mycologist. He was also the author of a color classification system that he called Chromotaxia. He was elected to the Linnean Society in 1916 as a foreign member. His multi-volume Sylloge Fungorum was one of the first attempts to produce a comprehensive treatise on the fungi which made use of the spore-bearing structures for classification.