It happened on the 100 block of Cross Keys Road in Pine Hill just before 6:30 p.m. Wednesday.
Police say the boy was crossing the street when he was struck.
The driver took off.
Then the boy was hit by a second vehicle, and that driver also drove away.
The boy is in critical condition at Cooper Hospital.
Police are looking for a gray or silver mini-van and a full-size conversion van, with a ladder attached to the rear door and a mounted spare tire.
The conversion van is two-tone - light gray over dark gray.
Anyone with information is asked to call police.