The 2020 International GT Open is the fifteenth season of the International GT Open, the grand tourer-style sports car racing series founded in 2006 by the Spanish GT Sport Organización.
It began on 8 August at the Hungaroring and ended at the Circuit de Barcelona-Catalunya on 1 November after six rounds.
Points are awarded to the top 10 (Pro) or top 6 (Am, Pro-Am, Teams) classified finishers.
If less than 6 participants start the race or if less than 75% of the original race distance is completed, half points are awarded.
At the end of the season, the lowest race score is dropped; however, the dropped race cannot be the result of a disqualification or race ban.