Police are appealing for information to find Quoc Tuan Nguyen.
The 16-year-old has been missing since January 1, 2015 and it is thought he may frequent Halifax town centre.
He is described as being an Asian male, 5ft tall with black hair, a slight build and brown eyes.
Any sightings or information should be passed to West Yorkshire Police by calling 101.
Please quote reference number 13/15/0000793