Adelaide police are appealing for public assistance to help locate missing 49-year-old Joseph Chaplin.
Victoria Police said he may be headed to Victoria and have released an image of Joseph in the hope that someone may recognise him.
Chaplin was last seen in the Coonawarra area of South Australia about 3pm on 16 September.
Police say the man is 185cm tall, solid build with blonde hair and beard.
Police believe he is driving a white Holden VE utility with SA registration XSP 083.
Anyone who sees Joseph is urged to contact the police assistance line on 131 444.