Police are appealing for public assistance to help locate missing 14-year-old Supapitt Josephine Gleeson.
Supapitt was last seen at her home on Victory Street in Keilor Park about 9pm on Wednesday 15 January.
Police and family hold concerns for her welfare due to her age and the length of time she has been missing.
Investigators have released the below image of Supapitt in the hope that someone may have information on her current whereabouts.
Supapitt is described as having brown hair, brown eyes, 160cm tall with a solid build and nose piercing.
She was last seen wearing a white hooded jumper.
Investigators believe she may be frequenting the Lilydale area.
Anyone who sees Supapitt is urged to contact Keilor Downs Police Station on 9365 3333.