The Greensburg Athletic Association was an early organized football team, based in Greensburg, Pennsylvania, that played in the unofficial Western Pennsylvania Professional Football Circuit from 1890 until 1900. At times referred to as the Greensburg Athletic Club, the team began as an amateur football club in 1890 and was composed primarily of locals before several professional players were added for the 1895 season. In 1894 it was discovered that the team had secretly paid formerly Indiana Normal (now Indiana University of Pennsylvania) player, Lawson Fiscus, to play football and retained his services on salary. The team was the chief rival of another early professional football team, the Latrobe Athletic Association.
Aside from Fiscus, the Greensburg Athletic Association included several of the era's top players, such as: Charlie Atherton, George Barclay, Ross Fiscus, Jack Gass, Arthur McFarland, Charles Rinehart, Isaac Seneca and Adam Martin Wyant. Several of these players revolutionized the game during their playing careers. Charlie Atherton is credited with inventing the place kick, and George Barclay invented the first-ever football helmet. Meanwhile, Isaac Seneca became the first Native-American to earn All-American honors and Adam Martin Wyant was the first professional football player to become a United States Congressman.
The team's home games were played at Athletic Park (which was later renamed Offutt Field). The field is still in use as football field by Greensburg Salem High School and, up until 1993, Greensburg Central Catholic High School.