He defeated Chinese Wang Xuetao 2-1 in the final match of the -60kg and claimed a gold medal.
Iranian athletes had already won seven gold medals in the Games.
Saeid Rajabi in +80kg and Mirhashem Hosseini in 63kg had won two gold medals in taekwondo.
Hassan Yazdani (86kg), Alireza Karimi (97kg) and Parviz Hadi (125kg) snatched three gold medals in wrestling freestyle.
Iranian Greco-Roman wrestlers Mohammad Ali Geraei in 77kg and Hossein Nouri in 87kg had also seized two gold medals.
The 2018 Asian Games, officially known as the 18th Asian Games and also known as Jakarta Palembang 2018, is a pan-Asian multi-sport event scheduled to be held from 18 August to 2 September in the Indonesian cities of Jakarta and Palembang.
The athletes compete in 465 events across 40 sports and 67 disciplines.