A young girl from Lilydale called Isabella was reported missing on Sunday 20 March.
The 14-year-old was last seen in Lilydale on Friday 18 March.
Police and family are concerned for her welfare.
A commenter on Yarra Ranges Eyewatch Facebook page reported potentially seeing her at Lilydale Station at around 2pm Friday 18 March in her Lilydale Heights school uniform.
Anyone with information contact Lilydale Police Station on 9739 2300.