The Lemp Mansion (3322 DeMenil Place, St. Louis, Missouri) is a historical house in Benton Park, St. Louis, Missouri. It is also the site of four suicides by Lemp family members after the death of the son Frederick Lemp, whose William J. Lemp Brewing Co. dominated the St. Louis beer market before Prohibition with its Falstaff beer brand. The mansion is said to be haunted by members of the Lemp family.