Roger Francis Wolff (April 10, 1911 – March 23, 1994) was an American professional baseball player. A right-handed knuckleball pitcher, he appeared in 182 games over all or part of seven seasons in Major League Baseball between 1941 and 1947: three with the Philadelphia Athletics, three with the Washington Senators, and one season split between the Cleveland Indians and the Pittsburgh Pirates. Wolff was born in Evansville, Illinois; he was listed as 6 feet (1.8 m) tall and 208 pounds (94 kg).