37-year-old Simon McAuley, from Daingean, Co. Offaly, was last seen at around 6pm on 7 December near the Bridge Centre in Tullamore.
Simon is described as being 1.87m (6′ 2″) in height, of slim build with short black hair, and blue eyes.
He was wearing light blue jeans, a red zip-up hoodie jacket with a blue bomber jacket over it, grey trainers with a thin red strip on the sides and a white baseball cap with a thin blue stripe around the peak when last seen.
Anyone with information regarding Simon’s whereabouts is asked to contact Tullamore Garda Station on 057-9327600 or the Garda Confidential Line on 1800 666111.