Dean Humphrey was last seen in the Cliftonville Road area of Northampton at about 3.20pm.
He is described as black, about 5ft 4ins, with a medium build. He has medium-length hair and a beard, and was wearing a white jacket with a zip and black lines, a red Manchester United shirt, black trousers and black trainers.
We are urging Dean, or anyone who knows of his whereabouts, to contact Northamptonshire Police on 101.