John A. Galvin (August 1842 – April 20, 1904) was an American baseball player who played one professional game for the Brooklyn Atlantics of the National Association of Professional Base Ball Players (NAPBBP) in 1872.

[1] He joined the Brooklyn Atlantics in 1863,[2][3] where, as the second baseman, he formed part of an infield which also included future professionals Dickey Pearce and Joe Start.

[1] Galvin returned to baseball to play a single game with the 1872 Brooklyn Atlantics.

In the contest, a 23–3 loss to the Boston Red Stockings, he had no hits in four at bats and made four errors in five fielding chances.

[1][2] Galvin joined the 51st New York Infantry Regiment in September of 1861, but was discharged the next month.