The 1891 season was the eighth season of regional competitive association football in Australia. There were two league competitions and two cup competitions fielded by Northern District British Football Association (Northern NSW) and the South British Football Soccer Association (New South Wales).
| Federation | Competition[1] | Winners | Runners-up | Third place | |
|---|---|---|---|---|---|
| Northern District British Football Association | Northern NSW Football League | Minmi Rangers | — | — | |
| South British Football Soccer Association | Sydney Badge Series | Parkgrove | — | — |
| Federation | Competition[2] | Winners | Runners-up | Venue | Result | |
|---|---|---|---|---|---|---|
| Northern District British Football Association | Ellis Cup | Burwood United | – | – | – | |
| South British Football Soccer Association | Gardiner Challenge Cup[3] | Parkgrove (1/1) | Pyrmont Rangers (2/1) | – | 4–1 |
(Note: figures in parentheses display the club's competition record as winners/runners-up.)