Only one club was relegated to the
2024 J2 League. Due to the re-introduction of 20 clubs league format,
Yokohama FC became the sole team going down to the second division, after just one season in the J1 League. They were replaced by three teams promoted from the
2023 J2 League. The first club promoted was
Tokyo-based
Machida Zelvia, debuting in the J1 as the J2 champions following a seven-year run in the Japanese second tier. Another automatic promotion spot was obtained by
Júbilo Iwata, who made a swift comeback after just a single season absence by finishing second, thus marking the return of a team from
Shizuoka in the Japanese first division since
2022. The last promotion spot was earned by
Tokyo Verdy, returning to the top flight for the first time since
2008 by finishing third in the J2 League and later won the
promotion play-offs. This brings back the
Tokyo derby between Verdy and
FC Tokyo in the J1 for the first time since that season as well as the first season in which three clubs from the capital city are competing at the highest tier of Japanese football system. ==Schedule==