Police are appealing for public help to find Timothy Ward-Dickson.
The 20-year-old was last seen leaving a house in Clow Street, Dandenong, about 11.30am on Saturday 14 January.
Timothy is described as 175 centimetres tall with a slim build, brown eyes and brown hair.
He was last seen wearing black and grey Adidas track pants and a black, white and red hooded jumper.
Police have released an image of Timothy in the hope that someone might recognise him and provide information on his whereabouts.
Call Dandenong Police Station on 9767 7444 with any information.