The 2023 Fanatec Japan Cup Series is the second season of 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 season began on 17 June at the Fuji Speedway in Shizuoka and is scheduled to end on 20 August at Okayama International Circuit in Okayama.[1]