53-year-old William Mulvihill of Ozanam Villas, Ballybunion was last seen in Tralee.
Valentia Coast Guard are coordinating the search today which involves Ballybunion Search and Rescue and local friends and neighbours.
The focus of the search which is ongoing at the moment is the Ballyseedy Wood area in Tralee.
Mr Mulvihill is described as 5′ 3” in height, bald with a moustache.
When he was last seen he was wearing a brown jacket, a blue shirt, and blue jeans.
If you’ve information, you can contact Listowel Garda Station at 068 21 000.