Iran conceded a 2-1 defeat against Thailand A on Saturday in its last match.
The competition was held with five teams of Iran (U20), Thailand A (adults), Thailand B (U23), Tajikistan, and Malaysia in a round-robin format on February 2-8 in Hat Yai.
The Iranian team had earlier defeated Tajikistan (3-2) and Malaysia (5-0) before suffering a 5-0 defeat against Thailand B.
Thailand A claimed the title with 12 points, while Thailand B finished runner-up with 7.
Myanmar and Kuwait canceled their participation in the event due to concerns over the outbreak of the novel coronavirus in East Asia.