Peel police say Shaundrey Knight-Bryce was last seen Monday at 8:30 a.m. at his residence on Goreway Drive in Mississauga.
Police had set up a command post Tuesday at Westwood Mall in Malton, to spread the word about the missing boy.
Shaundrey Knight-Bryce is described as black, four feet three inches tall with a thin build, black hair and brown eyes.
He was last wearing a red jacket, blue jeans, blue Nike shoes and a Blue Jays hat with fur on it. He was also possibly carrying a red Adidas gym bag.
Anyone with information about the boy's whereabouts is asked to call police at 905-453-2121, ext. 2133.