North Yorkshire Police are becoming increasingly concerned for the welfare of 16-year-old Ryan Gregory from Scarborough.
Ryan was last seen in Scarborough at around 10:45am on 20th February 2017.
A North Yorkshire Police spokesperson said: "Enquiries have been on-going to locate him since he was reported missing. Ryan is described as being white, 5feet 8inches tall, of slim build with short dark brown hair.
"When last seen he was wearing Black Adidas tracksuit sweatshirt and trousers with blue stripes, bright blue Adidas trainers and carrying a black man bag with Adidas white writing.
"Ryan is known to frequent the Scarborough area. Ryan, or anyone who has seen him, or knows of his whereabouts, is asked to call North Yorkshire Police on 101."