The 2025 F4 Japanese Championship season was the eleventh season of the F4 Japanese Championship.
This was the second season for the second-generation MCSC-24 chassis constructed by Toray Carbon Magic, and TOM'S TMA43 engine which produces 180 horsepower.
All teams competed with an identical Toray Carbon Magic MCSC-24 chassis and TOM'S 2-litre naturally aspirated engine.
All rounds are held in Japan and support the Super GT events in Japan, except for Okayama.
<div class="overflowbugx" style="overflow-x:auto;">
</div>
Points were awarded as follows:
Only the best finisher scored points for their team.