Merthyr Mawr is a village and community in Bridgend, Wales. The village is about 2½ miles from the centre of Bridgend town. The population of the community at the 2011 census was 267. The community occupies the area west of the Ewenny River, between Bridgend and Porthcawl. It takes in the settlement of Tythegston and a stretch of coastal sand dunes known as Merthyr Mawr Warren.