Fire broke out at the Shanfari Automotive Show held at Al-Khuwair, in the governorate of Muscat.
The Public Authority for Civil Defence and Ambulance (PACDA) announced that the blaze had been contained.
The PACDA statement reported no human casualties, but mentioned that the blaze had damaged exhibited cars.
Last month, another fire at a commercial building in Al Khuwair left three people injured, a number of neighboring shops damaged, and three vehicles burnt.