Roger Leroy Mason (born September 18, 1957) is an American former professional baseball player who pitched in the Major Leagues primarily in relief from 1984 to 1987, 1989, and 1991–1994. Mason was a member of the 1984 World Series champion Detroit Tigers, and appeared in the 1993 World Series for the Philadelphia Phillies. He pitched collegiately at Saginaw Valley State University.