| Hugh McQuillan | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 15 September 1895 |
| Birth Place: | New York City, New York, U.S. |
| Death Place: | New York City, New York, U.S. |
| Debutleague: | MLB |
| Debutdate: | July 26 |
| Debutyear: | 1918 |
| Debutteam: | Boston Braves |
| Finalleague: | MLB |
| Finaldate: | September 11 |
| Finalyear: | 1927 |
| Finalteam: | Boston Braves |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 88–94 |
| Stat2label: | Earned run average |
| Stat2value: | 3.83 |
| Stat3label: | Strikeouts |
| Stat3value: | 446 |
| Teams: | |
| Awards: |
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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.