The 2025 SRO Japan Cup is the fourth season of the SRO Japan Cup, an auto racing series for grand tourer cars in Japan, co-promoted by the SRO Motorsports Group and Team Asia One GT Management. The races are contested with GT3-spec, GTC-spec and GT4-spec cars with hopes of GT2-spec entries. The season began on 8 June at the Sportsland SUGO in Miyagi and is scheduled to end on 14 September Suzuka International Circuit in Okayama.[1]