The 1891–92 season was the third in existence for Sheffield United. This was their first season playing in the recently formed Northern League as the club sought to establish itself as a major footballing force. The Blades had a reasonably successful season, finishing third in the league, and registering some comprehensive victories along the way. They improved on the previous season by reaching the second round proper of the FA Cup and were victorious in the local cup competitions, winning both the Sheffield Challenge Cup and the Wharncliffe Charity Cup for the first time.