Alvin Hugh McQuillan (September 15, 1895 – August 26, 1947) was an American professional baseball player. He played in Major League Baseball as a pitcher from 1918 to 1927. He played for the Boston Braves and New York Giants. In 1561.2 innings pitched in 279 games over 10 seasons, McQuillan compiled an 88-94 won-loss record with a 3.83 Earned Run Average, allowing 1703 hits, 489 bases on balls and recording 446 strikeouts. He pitched 10 shutouts and recorded 17 saves. As a hitter, he posted a .195 batting average (103-for-527) with 45 runs, 2 home runs and 37 RBI.