The 2021 Gulf 12 Hours was the tenth edition of the Gulf 12 Hours held at Bahrain International Circuit on 9 January 2021. The race was contested with GT3-spec cars and GT4-spec cars. The event promoters were the Driving Force Events (DFE). The event had been relocated from Abu Dhabi's Yas Marina Circuit to Bahrain International Circuit and postponed from 2020.
Class winners denoted in bold.
Class winners denoted in bold.