Police are appealing for public assistance to help locate Nathaniel Leota.
The 15-year-old was last seen at his home address in Brookfield on Monday 26 August.
Police and family members hold concerns for Nathaniel’s welfare due to his age and the length of time he has been missing.
Investigators have released an image of Nathaniel in the hope someone recognises him and can provide information on his whereabouts.
He is known to frequent the Werribee area.
Anyone who sees Nathaniel or has information on his whereabouts is urged to contact Melton Police Station on 9747 7999.