Frederick William Luderus (September 12, 1885 – January 5, 1961) was an American professional baseball player who played first base in the major leagues from 1909 to 1920 for the Philadelphia Phillies and Chicago Cubs. Luderus was a member of the 1915 Phillies team that won the National League pennant. He was the first Phillie to hit a home run in the World Series. He rebuilt his home in Three Lakes, Wisconsin, with the help of architect, neighbor and Phillies teammate Cy Williams.