Police are appealing for public assistance to help locate Sabrina Maclean.
The 17-year-old was last seen at her Castlemaine home about 11am on 7 April.
Investigators have been told she may have travelled to Maryborough and may be in the company of a man.
Police and family members hold concerns for Sabrina’s welfare due to her age and have released an image in the hope someone can provide information on her whereabouts.
Sabrina is described as about 160-165cm tall with a thin build, light brown hair and hazel eyes.
She is known to frequent the Castlemaine, Maryborough areas as well as the western suburbs of Melbourne.
Anyone who sees Sabrina or has information on her whereabouts is urged to contact Castlemaine Police Station on 5470 4100.