Mary Rountree (July 23, 1922 – August 7, 2007) was a catcher who played from 1946 through 1952 in the All-American Girls Professional Baseball League (AAGPBL).

[1] Nicknamed "Square Bush", Mary Rountree was one of the top five defensive catchers in the All-American Girls Professional Baseball League during its twelve years of history.

Rountree was magnificent at all the intangible things that a catcher does, like calling the game, working the pitch counts and blocking home plate, which combined with a fine defense and a strong and secure throwing arm.

In 1943 she received a call from AAGPBL executive Arthur Meyerhoff to join the new league, but she declined the offer because she had three brothers serving in the military during World War II.

At the end of the war, she attended a AAGPBL tryout in Miami for Max Carey and was a signed to a contract.

[1][5] Rountree entered the league in 1946 with the Peoria Redwings, playing for them one year before joining the Fort Wayne Daisies (1947–1952) and the Grand Rapids Chicks (1952).