Top scorers
| Scorer | Goals | Team |
|---|---|---|
 | 19 | KA |
| | 14 | Fylkir |
| | 12 | Selfoss |
| | 12 | KA |
| | 11 | Þór A. |
The 1980 season of 1. deild karla was the 26th season of second-tier football in Iceland.
| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Promotion or relegation |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | KA | 18 | 15 | 1 | 2 | 61 | 15 | +46 | 31 | Promoted to 1981 Úrvalsdeild |
| 2 | Þór A. | 18 | 10 | 4 | 4 | 33 | 19 | +14 | 24 | |
| 3 | Þróttur N. | 18 | 7 | 7 | 4 | 24 | 24 | 0 | 21 | |
| 4 | ÍBÍ | 18 | 4 | 9 | 5 | 34 | 35 | −1 | 17 | |
| 5 | Selfoss | 18 | 6 | 5 | 7 | 31 | 37 | −6 | 17 | |
| 6 | Fylkir | 18 | 6 | 4 | 8 | 31 | 25 | +6 | 16 | |
| 7 | Haukar | 18 | 5 | 6 | 7 | 29 | 40 | −11 | 16 | |
| 8 | Völsungur | 18 | 5 | 5 | 8 | 22 | 31 | −9 | 15 | |
| 9 | Ármann | 18 | 3 | 8 | 7 | 28 | 37 | −9 | 14 | Relegated to 1981 2. deild |
| 10 | Austri | 18 | 1 | 7 | 10 | 18 | 48 | −30 | 9 |
| Scorer | Goals | Team |
|---|---|---|
| | 19 | KA |
| | 14 | Fylkir |
| | 12 | Selfoss |
| | 12 | KA |
| | 11 | Þór A. |
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