1891 East End Gyms football season

The 1891 East End Gyms football season was the second season of competition for the American football team representing the East End Gymnastic Club (renamed the Pittsburgh Athletic Club the next year). In six documented games, the team had a record of 6–0.

According to a publication by the Professional Football Researchers Association, "it is believed" that two additional games, against Greensburg and Indiana Normal School, took place and that East End won. The team's 1891 record as listed in an 1896 Pittsburgh Post article does not include these two games. An article in the Pittsburgh Press of November 24, 1891 reported that one attempt by the club to add late-season games against Greensburg and Indiana Normal (among other teams) was unsuccessful.