| Tournament details | |
|---|---|
| Country |  Japan |
| Final positions | |
| Champions | Nippon Kokan |
| Runner-up | Hitachi |
| Semifinalists | |
Statistics of JSL Cup in the 1980 season.
| Tournament details | |
|---|---|
| Country | Japan |
| Final positions | |
| Champions | Nippon Kokan |
| Runner-up | Hitachi |
| Semifinalists | |
Statistics of JSL Cup in the 1980 season.