Mark Kilham, aged 51, was last seen at around 8.45am on Monday morning (August 5) leaving his home on Birley Moor Road.
He is described as being of a large build and having grey hair. He was wearing a blue jumper, black jeans and dark trainers.
If you have seen Mark or know where he is please contact 101 quoting incident number 758 of 5 August.