Tenby (Welsh: Dinbych-y-pysgod, lit. 'fortlet of the fish') is both a walled, seaside town in Pembrokeshire, Wales, on the western side of Carmarthen Bay, and a local government community.
Notable features include 2+1⁄2 miles (4.0 km) of sandy beaches and the Pembrokeshire Coast Path, the 13th century medieval town walls, including the Five Arches barbican gatehouse, Tenby Museum and Art Gallery, the 15th century St. Mary's Church, and the National Trust's Tudor Merchant's House.
Boats sail from Tenby's harbour to the offshore monastic Caldey Island. St Catherine's Island is tidal and has a 19th century Palmerston Fort.
The town has an operating railway station. The A478 road from Cardigan, Ceredigion, connects Tenby with the M4 via the A477, the A40 and the A48 in approximately 40 miles (64 km).