Adolph Louis Luetgert (December 27, 1845 – July 7, 1899) was a German-American businessman in Chicago, Illinois, convicted of murdering his second wife Louisa Bicknese in 1897 and dissolving her body in a sausage vat filled with lye at his A.L. Luetgert Sausage & Packing Company. Prosecuted by State's Attorney Charles S. Deneen, later a two-term governor of Illinois, Luetgert was convicted and sentenced to life in prison on February 9, 1898. He died in prison a year and a half later.