1978 Japan Soccer League

Statistics of Japan Soccer League for the 1978 season.

First Division
By winning the 1978 Emperor's Cup and 1978 Japan Soccer League Cup along with the title, Mitsubishi completed the first Japanese treble ever.

Promotion/relegation Series
Nissan promoted, Fujitsu relegated.

Promotion/relegation Series
Yamaha promoted, Kyoto Shiko relegated.