Pentre-rhew is a hamlet in the community of Llanddewibrefi, Ceredigion, Wales, which is 58.3 miles (93.9 km) from Cardiff and 169.6 miles (272.9 km) from London. Pentre-rhew is represented in the Senedd by Elin Jones and is part of the Ceredigion Preseli constituency in the House of Commons.