Portugal I Divisao 1980/1981: final table of First division
| # | Club | M | W | D | L | Goal | Pts | GD | Result | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | SL Benfica | 30 | 22 | 6 | 2 | 72 - 15 | 50 | +57 |  Champion | |
| 2 | FC Porto | 30 | 21 | 6 | 3 | 53 - 18 | 48 | +35 | Vice-champion | |
| 3 | Sporting CP | 30 | 14 | 9 | 7 | 48 - 28 | 37 | +20 | ||
| 4 | Boavista FC | 30 | 14 | 8 | 8 | 36 - 25 | 36 | +11 | ||
| 5 | Vitoria Guimaraes | 30 | 11 | 9 | 10 | 38 - 30 | 31 | +8 | ||
| 6 | Sporting de Braga | 30 | 10 | 10 | 10 | 34 - 39 | 30 | -5 | ||
| 7 | Vitoria Setubal | 30 | 9 | 11 | 10 | 30 - 30 | 29 | ±0 | ||
| 8 | Portimonense SC | 30 | 11 | 6 | 13 | 34 - 37 | 28 | -3 | ||
| 9 | SC Espihno | 30 | 9 | 9 | 12 | 26 - 35 | 27 | -9 | ||
| 10 | FC Penafiel | 30 | 11 | 5 | 14 | 27 - 38 | 27 | -11 | ||
| 11 | Belenenses | 30 | 8 | 10 | 12 | 24 - 39 | 26 | -15 | ||
| 12 | Amora FC | 30 | 10 | 5 | 15 | 38 - 51 | 25 | -13 | ||
| 13 | CAF Viseu | 30 | 8 | 9 | 13 | 24 - 40 | 25 | -16 | ||
| 14 | Varzim SC | 30 | 8 | 8 | 14 | 27 - 31 | 24 | -4 |  Relegated | |
| 15 | CS Maritimo | 30 | 7 | 9 | 14 | 33 - 46 | 23 | -13 | Relegated | |
| 16 | Academica de Coimbra | 30 | 4 | 6 | 20 | 16 - 58 | 14 | -42 | Relegated | |
| Pts = Points M = Matches played; W = Matches won; D = Matches drawn; L = Matches lost; GD = Goal difference; | ||||||||||
Notes:
- Champion
 - national cup holder
 - participation in European competition
 - promoted
- relegated
|
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1979/1980
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