Derbyshire police say they are 'concerned' for the safety of Mohammed Begshaw who is missing from Buxton.
The 17-year-old was last seen on Friday, May 17 in the city centre area of Manchester.
He is described as black African, of a stocky build and has short black curly hair. He speaks broken English.
Anyone who has seen Mohammed or who knows of his whereabouts is asked to contact police on 101.