Roger Francis Wolff (April 10, 1911 - March 23, 1994) was a right-handed knuckleball pitcher in Major League Baseball. He played for seven seasons from 1941 to 1947: three seasons with the Philadelphia Athletics, three seasons with the Washington Senators, and split the 1947 season between the Cleveland Indians and the Pittsburgh Pirates. His career win-loss record was 52-69 with an earned run average of 3.41. The best season of his career was 1945, when he went 20-10 with a 2.12 ERA, striking out 108 and walking 53 for the Washington Senators.