Wolfgang Schlumpf OSB (January 20, 1831 – August 1, 1904) was a Swiss-born Benedictine monk and missionary in the United States who is credited as founder of Subiaco Abbey in western Arkansas. He immigrated to the United States in 1862 after being assigned to what became St. Meinrad Abbey in 1870 in southern Indiana. (It became an Archabbey in 1954).