The 1990–91 National Soccer League season, was the 15th season of the National Soccer LeagueinAustralia.
| NSL 1990-91 | |
|---|---|
| League | National Soccer League |
| Sport | Association football |
| Duration | 1990–91 |
| Number of teams | 14 |
| NSL season | |
| Champions | South Melbourne |
| Top scorer | David Seal (19) |
| National Soccer League seasons | |
| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification or relegation |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Melbourne Croatia | 26 | 15 | 7 | 4 | 55 | 39 | +16 | 37 | Qualification for the Finals series |
| 2 | South Melbourne (C) | 26 | 14 | 6 | 6 | 45 | 33 | +12 | 34 | |
| 3 | Adelaide City | 26 | 12 | 9 | 5 | 40 | 24 | +16 | 33 | |
| 4 | Marconi Fairfield | 26 | 14 | 3 | 9 | 48 | 33 | +15 | 31 | |
| 5 | Parramatta Eagles | 26 | 10 | 9 | 7 | 38 | 31 | +7 | 29 | |
| 6 | Sydney Olympic | 26 | 8 | 13 | 5 | 31 | 25 | +6 | 29 | |
| 7 | Sydney Croatia | 26 | 8 | 10 | 8 | 27 | 33 | −6 | 26 | |
| 8 | Preston Makedonia | 26 | 8 | 9 | 9 | 26 | 27 | −1 | 25 | |
| 9 | Wollongong City | 26 | 8 | 8 | 10 | 32 | 34 | −2 | 24 | |
| 10 | St George-Budapest (R) | 26 | 6 | 10 | 10 | 34 | 41 | −7 | 22 | Relegation to the NSW Division 1 |
| 11 | APIA Leichhardt | 26 | 7 | 7 | 12 | 27 | 28 | −1 | 21 | |
| 12 | Heidelberg United | 26 | 6 | 9 | 11 | 26 | 37 | −11 | 21 | |
| 13 | Sunshine George Cross (R) | 26 | 7 | 3 | 16 | 39 | 53 | −14 | 17 | Relegation to the Victorian Premier League |
| 14 | Wollongong Macedonia (R) | 26 | 3 | 9 | 14 | 25 | 53 | −28 | 15 | Relegation to the NSW Division 1 |
| Elimination and qualifying Finals | Semi-finals | Preliminary Final | Grand Final | |||||||||||||||
| 1 | Melbourne Croatia | 1 | 1 | Melbourne Croatia | 1 (4) | |||||||||||||
| 2 | South Melbourne | 0 | 2 | South Melbourne (p) | 1 (5) | |||||||||||||
| 2 | South Melbourne | 4 | 2 | South Melbourne | 1 | |||||||||||||
| 3 | Adelaide City | 2 | 3 | Adelaide City | 0 | |||||||||||||
| 3 | Adelaide City | 1 | ||||||||||||||||
| 4 | Marconi Fairfield | 0 | ||||||||||||||||
| 4 | Marconi Fairfield (p) | 3 (7) | ||||||||||||||||
| 5 | Parramatta Eagles | 3 (6) | ||||||||||||||||