The 2026 TSS Thailand Super Series will be the thirteenth season of the Thailand Super Series, a South-East Asian sports car racing series organised by the TSS and in partnership with SRO Motorsports Group. The season will start start on 21 May at Chang International Circuit and finish on 1 November, also at Chang International Circuit. The races are contested with GT3-spec, GT Cup-spec and GT4-spec cars.
Championship points are awarded for the first ten positions in each race. Entries are required to complete 75% of the winning car's race distance in order to be classified and earn points.