1973 Japan Soccer League

The 1973 season of Japanese football.

JSL First Division
Tanabe Pharmaceuticals was relegated, thereby becoming the first Japanese team to go straight back down one season after promotion.

JSL 1/2 promotion/relegation Series
Eidai promoted, Tanabe relegated.

JSL promotion/relegation Series
Sumitomo, at the time based in Osaka, would move to Kashima, Ibaraki in 1975 and become today's Kashima Antlers. Hitachi Ibaraki and Sumitomo promoted, Toyota Industries and Hagoromo Club relegated.