Police are becoming increasingly concerned for the welfare of Moustafa Sana, who has been reported missing from Armley.
Moustafa, 14, has not been seen since Friday, 15 September. He is of medium build and is believed to be wearing an all-black tracksuit, black trainers and a black beanie hat.
He is believed to be frequenting the Beeston area of the city.
Contact police in Leeds on 101, or by using the online livechat facility. The log reference is 703 of 20 September.