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.

This biographical article relating to an American baseball pitcher born in the 1890s is a stub.