The 2023 International GT Open was the eighteenth 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 30 April at the Algarve International Circuit and will end at the Circuit de Barcelona-Catalunya on 22 October after seven rounds of two races each.
If less than 6 participants start the race or if less than 75% of the original race distance is completed, half points are awarded.
For the Endurance Race (Spa) points are multiplied by 2.
Two (2) best results of each team is counted towards the championship.