16-year-old Michael Mongan from Lucan, Dublin, has been missing from his home since Wednesday evening.
Michael is described as being 5ft 6″ tall, of slight build, and with short brown hair.
He was wearing a black coat and blue jeans when last seen. One distinctive feature is that he has a black plaster cast on a broken right leg.
Anyone with information regarding the teenager’s whereabouts is asked to contact Gardaí 01-6667300.