Police are appealing for public assistance to help locate missing Snake Valley man Jack.
The 25-year-old was last seen on Eyre Street in Ballarat about 10pm on Friday, 20 May.
Police have released an image of Jack in the hope it will help locate him.
He is about 180cm tall, of medium build with short shaved dark brown hair.
Anyone with information on his whereabouts is urged to contact Ballarat Police Station on (03) 5336 6000.