The flick received the award for portraying the horror created by Daesh terrorist group in Iraq's Kurdistan region, ISNA reported.
'Dayan' is Nooranipour's first feature film following his documentary film, 'A157', which focuses on the future of war-stricken people who live in a village, trying hard for a better future and those who have experienced war.
It narrates the story of the captivity of over 4,000 women refugees who could not join their families on the other side of the border and are compelled to make hard decisions amid crisis.
The 29th edition of SGIFF was from November 28 to December 9.
'Dayan' will also be screened in India's Chennai International Film Festival (December 13-20) as well as in Italy's Tertio Millennio Film Festival (December 12-16).