Isaac Tyson Jr. (1792–1861) was a Quaker businessman from Baltimore, Maryland, who held a virtual monopoly on world supplies of chromium minerals during the mid-19th century and a very successful entrepreneur and industrialist. The son of Baltimore flour merchant senior, and his wife Margaret, the younger Tyson studied geology, mineralogy, and chemistry in France, skills which he would use to great advantages during his industrial career. Tyson married Hannah A. Wood, by whom he had at least four children: Tyson was posthumously inducted into the National Mining Hall of Fame in 1996.