Gardaí have appealed for information to trace 16-year-old Joseph Lawrence, who missing from the Fettercairn Road area of Tallaght in Dublin.
He has not been seen since Friday, 4 October.
He is described as being 5' 10", of stocky build with short black hair.
When last seen he was wearing blue jeans, a navy blue Tommy Hilfiger T-shirt and a navy blue Superdry Jacket.
Anyone with information is asked to contact Tallaght Garda Station on 01 6666 000, the Garda Confidential line on 1800 666 111 or any Garda Station.