Llanvaches or Llanfaches is a village and community parish within the boundaries of the city of Newport, Wales. It lies to the east of the urban area, in the historic county of Monmouthshire and the preserved county of Gwent. The population rose to 402 by the 2011 census.

Dubricius or Dubric was a 6th-century British ecclesiastic venerated as a saint. He was the evangelist of Ergyng and much of south-east Wales.