Gardaí are appealing to the public for assistance in tracing the whereabouts of 64-year-old Patrick Douglas.
Patrick was last seen in the late afternoon of Sunday January 5, when he left his home in Woodville, Coolock, Dublin 5.
He is described as being 5' 10" in height, of medium build, and he has grey hair.
He was last seen wearing a sand-coloured leather jacket and a pair of black runners.
Anyone with information is asked to contact gardaí at Coolock on 01 - 6664200, the Garda Confidential Line 1800 666111 or any garda station.