He clocked 2:01.75 in the Boys' 200m Butterfly, followed by Indian Tirthank Pegu (2:02.56) and Hong Kong’s Yi Shun Wang (2:03.45).
Gholami had previously won a gold medal in the Boys' 100m Butterfly.
The 3rd Asian Youth Games began in Bahrain on October 22 and will end on Friday.
The games serve as qualifiers for the 2026 Youth Olympic Games in Dakar.
Iran has sent 236 athletes to the event.