2018 in Japanese football

The 2018 season was the 90th season of competitive association football in Japan.

Promotion and relegation
Teams relegated from J1 League
 * Ventforet Kofu
 * Albirex Niigata
 * Omiya Ardija

Teams promoted to J1 League
 * Shonan Bellmare
 * V-Varen Nagasaki
 * Nagoya Grampus

Teams relegated from J2 League
 * Thespakusatsu Gunma

Teams promoted to J2 League
 * Tochigi SC

Teams relegated from J3 League
 * No relegation to the Japan Football League

Teams promoted to J3 League
 * No promotion from the Japan Football League

Teams promoted to Japan Football League
 * Cobaltore Onagawa
 * Tegevajaro Miyazaki

Emperor's Cup
Final

J.League Cup
Final

Final
Kashima Antlers won 2–0 on aggregate.

Empress's Cup
Final

Nadeshiko League Cup
Final

Friendlies
Kirin Challenge Cup

Group H
Matches