Brandon Kightley was last seen in Raunds at around 5pm last Wednesday.
Northamptonshire Police are appealing for information to help find him.
He is described as white, around 5ft 7in, slim, with short brown hair.
Brandon is believed to be wearing a black puffa jacket and black trousers.
Anyone who sees Brandon or knows where he is should call Northamptonshire Police on 101, referencing incident 350 of 27/11/2019.