Gardaí at Kilmainham are seeking assistance from the public in tracing the whereabouts of 24-year-old Philip Finnegan.
Philip has been missing from his home at Mary Aikenhead House, Dublin 8, since Wednesday.
Philip is described as approximately 1.6m (5'4") in height, with dark brown hair and blue eyes.
When last seen he was wearing a light grey Fila top with a full length zip to the front, dark grey Adidas tracksuit bottoms with three white stripes down the legs and royal blue Adidas runners.
Anyone with information is asked to contact Kilmainham Garda Station on 01-666 9700, the Garda Confidential Line on 1800 666 111 or any garda station.