The 2025 League of Legends Japan League is in the 22nd season of Japan's professional League of Legends. 2025 marks the first year of the LJL as a regional league below the League of Legends Championship Pacific (LCP). The tournament is organized by Riot Games and Playbrain.

Tournament Format

Main Stage will be played in a round-robin format, and all matches are played in the best-of-one series.

Playoffs will be played in a single-elimination format, and all matches will be played in a best-of-five series.