Epping teenager Zhyon Ah Chookoon was last seen at a festival in Craigieburn about 8pm on Saturday evening 9 March.
Police are appealing for public assistance as family hold concerns for 15-year-old Zhyon as his disappearance is out of character.
He is described as 180cm tall with a medium build, brown eyes and short dark hair.
Anyone with information is urged to contact Epping Police Station on (03) 9409 8100.
