Frederick William Alexander Buelow (February 13, 1876 – December 27, 1933), sometimes referred to as Fritz Buelow, was a German-born baseball player. He played professional baseball as catcher for 15 years from 1895 to 1909, including nine years in Major League Baseball with the St. Louis Perfectos (1899), St. Louis Cardinals (1900), Detroit Tigers (1901–1904), Cleveland Naps (1904–1906), and St. Louis Browns (1907).