Frederick C. Orthwein (May 12, 1871 - September 23, 1927) was an American businessman from St. Louis, Missouri.
[1] In 1900, he co-founded the Gulf Ports Grain Exporters' Association, a trade organization whose aim was to set common rules of grain exports among merchants in St. Louis, Chicago and Kansas City, Missouri.
[2] Orthwein also served as the president of the William F. Niedringhaus Investment Company, his father-in-law's investment firm.
[1] Like his father, he served on the boards of directors of the Mississippi Valley Trust Company and the Kinloch Telephone Company.
[1] From 1913 to 1915, Orthwein served on the board of the National Bank of Commerce of St.