Tyler Barnes’ last known whereabouts were in Elgin, Aberdeenshire on Wednesday.
Officers said they are keen to speak to anyone who has information about where the 14-year-old is.
He is described as white, 5ft 9in, slim build with short brown hair worn in a side parting.
The teenager is known to wear black trainers and tracksuit bottoms and speaks with an English accent.
Officers urged anyone with information to call 101 and quote MP180501804 .