Missing 65-year-old Bernard Sanke from the Lisnaskea area was last seen in the car park of Tollymore Forest Park in Newcastle.
Police say Bernard was last seen at 11:35am on Sunday 5 December when he was dropped off in the car park.
Bernard is described as being of heavy build with white hair and a beard.
He is believed to have been wearing a blue anorak, white t-shirt and blue jeans. He may have been carrying a brown satchel, black laptop case and black carrier bag.
Searches are ongoing at present and police would urge anyone with information regarding Bernard’s whereabouts to contact officers on 101 quoting reference number 679 07/12/21.