Harry Elwood "Moose" McCormick (February 28, 1881 – July 9, 1962) was an American professional baseball outfielder.

He played all or part of five seasons in Major League Baseball between 1904 and 1913 for the New York Giants, Pittsburgh Pirates, and Philadelphia Phillies.

McCormick's father died when he was five years old, making him legally an orphan under Pennsylvania laws, and eligible to attend Girard College.

[2] He succeeded future Giants teammate Christy Mathewson as Bucknell's starting fullback.

After the season, the Pirates traded McCormick to the Philadelphia Phillies with Kitty Bransfield and Otto Krueger for Del Howard.

When Giants manager John McGraw inquired, Seymour made an excuse about having the sun in his eyes.

[8] McCormick remained with the military, serving as a civilian director in the United States Army Air Forces during World War II.