George Hartley McQuinn (May 29, 1910 – December 24, 1978) was an American professional baseball player.

McQuinn was born in Arlington, Virginia, and attended Washington-Lee High School.

In 1947, at the age of 36, McQuinn hit .304 with 13 home runs and 80 RBIs, and was nominated for the MVP Award.

[1] McQuinn had a career batting average of .276, and a total of 135 home runs and 794 RBIs in 1,550 games.

He recorded a .992 fielding percentage playing every inning of his major league career at first base.