The SRO Japan Cup is a racing series operated by SRO Motorsports Group and Team Asia One GT Management's GT World Challenge Asia, an auto racing series for grand tourer cars in Japan. The races are contested with GT3-spec and GT4-spec cars. The series used to compete together alongside GT World Challenge Asia, but as of 2024, the Japan Cup is held as a stand-alone series.
Bold indicates overall champion for each car class (GT3 and GT4).