The Dylan Thomas Trail runs through places associated with the poet Dylan Thomas in Ceredigion, west Wales. It was officially opened by Aeronwy Thomas, Dylan's daughter, in July 2003. It also featured in the celebration in 2014 of the centenary of Dylan's birth.

Ceredigion ( ), historically Cardiganshire, is a county in the west of Wales. It borders Gwynedd across the Dyfi estuary to the north, Powys to the east, Carmarthenshire and Pembrokeshire to the south, and the Irish Sea to the west. Aberystwyth is the largest settlement and, together with Aberaeron, is an administrative centre of Ceredigion County Council.