In the men’s over-84kg final, Iran’s Saleh Abazari thrashed Hideyoshi Kagawa from Japan 8-0 to win the gold medal.
Iran tasted victory in two further events with Hamideh Abbasa beating Chinese Taipei's Wen Tzu-Hsuan 8-0 in the women’s over-68kg final and Majid Hassannia Deilami defeating Saudi Arabia's Saud Albasher 6-2 in the men’s under-55kg final.
Iran's Ali Asghar Asiabari won a silver medal in the under-75kg after being defeated by Jordan’s Bashar Alnajjar 6-4.
Iran also won three bronze medals in the competition.
Mahdi Khodabakhshi won a bronze medal in men’s under-84kg class.
Shima Alesadi took a bronze in women’s under-61kg category, as well as Iran women’s team kata.
The event is the first to offer qualification points for Tokyo 2020, where karate will make its Olympic debut.