Coedkernew (Welsh: Coedcernyw) is a community in the south west of Newport, Wales, in the Marshfield ward.

The parish is bounded by Percoed reen to the south, Nant-y-Selsig to the southwest, and Pound Hill to the west.

The eastern boundary is formed from the Ebbw River Bridge roundabout to the west of the International Rectifier plant, Duffryn Drive, along the southern edge of Tredegar House Country Park, Pencarn Lane and Percoed Lane.

Despite being a rural parish to the south and west, the north and east has seen large increases in population in recent years due to the continued suburbanisation of Newport; it grew from 574 in 2001 to 2,187 in 2021.

The remains of a prehistoric burial chamber, believed to be neolithic, can be found at the northern boundary near Gwern-y-cleppa .