Oswald Christian Orwoll was an American baseball and football player. He played in Major League Baseball as a pitcher and first baseman for the Philadelphia Athletics. He had a career 6–7 record in 39 games pitched and a .294 batting average in 94 games. He was member of Connie Mack's 1929 World Series team, but did not appear in any games during the Series. On November 29, 1930 he was traded by the Athletics with Homer Summa to the Portland Beavers of the Pacific Coast League for Herb Lahti.