The incident happened at about 17:30 last Tuesday (29th October), when a 14-year-old boy was crossing Adelaide Grove and was hit by a car pulling out of Yarborough Road.
The vehicle, believed to be driven by a woman, is described as either a black Renault or Citroen.
The youngster, who was knocked to the ground, sustained a shoulder injury as well as torn skin to the left elbow and a grazed left hip.
PC Paul Neill said:
“We are appealing for anyone who may have seen this incident or the driver herself to come forward and get in touch with police.”
Anyone with information can contact PC Paul Neill at Newport Police Station by phoning 101. Information can be given anonymously by phoning the independent Crimestoppers charity on 0800 555 111