Lemybrien is a small village and townland in County Waterford, Ireland. It is on the N25 Cork to Waterford City road. Lemybrien is in the foothills of the Comeragh Mountains, in an area of County Waterford known as "The Déise". As of the 2016 census, the village had a population of 192 people, of whom 104 were male and 88 female.