Police are appealing for public assistance to help locate missing Aleyna Asan.
The 18-year-old was last seen leaving her family home in Meadow Heights on October 22.
Aleyna is about 170cm tall, medium build with black hair and olive complexion.
She is believed to currently be in western Sydney, in the Mount Druitt area but may return to Victoria.
She was last seen driving a 2004 silver Holden Commodore Sedan 1PX 9IX
Police have released an image of Aleyna in the hope someone recognises her and can provide information on her whereabouts.
Anyone who sights Aleyna or who knows of her whereabouts is urged to contact Craigieburn Police on (03) 9303 4433.