Daftari defeated his Korean rival in the final match of the men’s -73 kg.
Ali Salahshour also won a silver medal in the -66 kg weight class.
The Deaflympics had initially been scheduled to take place from December 5 to 21 in 2021, but was postponed due to COVID-19 complications.
There are 209 events in 17 sports on the Deaflympics program.