Gwernesney (Welsh: Gwernesni) is a village in Monmouthshire in southeast Wales.
Gwernesney is located 3 miles (4.8 km) east of Usk on the B4235 road to Chepstow.
Gwernesney is set in a rural location close to Usk town.
The former parish church in the village is St Michael and All Angels.
The South Wales Gliding Club operate towed gliders from nearby - often to be seen over the village.