Lester Wayne (Les) Lancaster (born April 21, 1962) is a former professional baseball player. He pitched in the Major Leagues from 1987 to 1993 and later managed in the minor leagues. Along with fellow reliever Mitch Williams, Lancaster helped lead the Chicago Cubs to a 1989 National League East division title. Lancaster played college baseball for the Arkansas Razorbacks and Dallas Baptist University. In 703.2 innings of work, Lancaster was 41–28, a winning percentage of .594 with an ERA of 4.05. He was a good fielding pitcher, committing only one error in 139 total chances for a .993 fielding percentage.