William Edward "Roscoe" Coughlin (March 15, 1868 – March 20, 1951) was an American professional baseball player who was a pitcher for two seasons in the National League (NL). In 1890 he pitched for the Chicago Colts and in 1891 he played for the New York Giants. Prior to his Major League Baseball career, he began his minor league career in 1887, and continued afterward until 1897.