Alfonzo was last seen at his home in the 15000 block of Sellers Road around 8:30 p.m.
The boy was wearing a green shirt and black pants with a white-colored stripe down the leg.
Alfonzo is 5'4" and weighs 140 pounds.
Anyone with information is urged to call the the Harris County Sheriff's Office Missing Person/Runaway Unit at 713-755-7427.