Charles Gratiot, 1752-1817, businessman. Born in Lausanne, learned the fur trade in Canada working with an uncle, moved to Illinois 1777, and to St. Louis, Missouri, in 1781, where he accumulated real estate and expanded his business interests. Was an official witness of the transfer document handing Upper Louisiana from Spain to the US. 

Isaak Iselin, 1783-1841, businessman and banker, born in Basel, settled in New York in 1801. Worked his way up the trading house of LeRoy-Bayard & McEvers, where he was a partner 1808-1815. In 1815 became a partner of DeRham-Iselin & Moore. Returned to Basel in 1835, but was forced to spend another two years in New York when his business suffered serious losses as the result of a fire. He returned to Basel definitively in 1838. His son Adrian Georg Iselin (1818 - 1905) founded the bank A Iselin & Co, had interests in railways and mining, and spent much time and money on philanthropic works.

Paul John Kruesi, 1878-1965, electrical engineer and businessman born in Menlo Park, NJ. One of the eight children of John Kruesi, he started work in the Chicago Edison Company after studying electrical engineering. He moved into management and sat on the boards of a number of companies, many of them connected with mining and metallurgy. He was active in the Electrochemical Society, acting as its director for many years and serving as president 1928-29. He also helped to establish the US Chamber of Commerce. The Kruesi Spirit of Innovation award, presented each year by the Chattanooga Chamber of Commerce honors both Paul John (who became a leading citizen of the town) and his father.