According to Press TV, Iranian athlete Ali Moujerlou, who had received a bye in his opening round contest of men's 86-kilogram freestyle weight category, overcame a wrestler from Algeria by 10 points to 0 in the first contest.
He then prevailed over his Polish rival Sebastian Jezierzański 10-0 in the next match to march into the final round.
Moujerlou downed his Polish opponent Zbigniew Baranowski 4-3 in the last encounter and collected the gold medal.
In the 125-kilogram category, Iran's Amir-Reza Amiri conceded a 0-5 defeat to Deng Shudi from China and claimed a silver medal.
Iranian Greco-Roman wrestlers Mehdi Ebrahimi, Kayvan Rezaei and Amir Hossein Rezaei also snatched a gold and two bronze medals in the 80-kilogram and 98-kilogram weight divisions.
The Dan Kolov & Nikola Petrov 2016 international wrestling tournament started in the Bulgarian capital city of Sofia on January 29, and will finish on January 31.