Bismuthinite is not a common mineral. Excellent examples of this mineral, including large individual crystals, have come from Potosí, Bolivia, especially at the Tazna Mine. Large foliated crystal masses of Bismuthinite were found in the Biggenden Mine, Queensland, Australia. In Europe, noteworthy localities include the Redruth, Camborne, and St. Day Austell Districts, Cornwall, England; Les Chaises, Meymac, Corrèze, France; the Clara Mine, Oberwolfach, Black Forest, Baden-Württemberg, Germany; and the Alsó-Rózsa Mine, Nagybörzsöny, Hungary. Tiny Bismuthinite needles come from the La Fossa crater, Vulcano Island, (near Lipari Island), Italy.
In the U.S., Bismuthinite localities include the Old Mine Plaza construction site, Trumbull, Fairfield Co., Connecticut; Haddam and Portland, Middlesex Co., Connecticut; and the Creole Mine, Mineral Range, Beaver Co., Utah.