The Gwili Railway (Welsh: Rheilffordd Gwili) is a Welsh heritage railway, that operates a preserved standard gauge railway line from the site of Abergwili Junction (near Carmarthen) in southwest Wales along a four-and-a-half-mile (7.2 km) section of the former Carmarthen to Aberystwyth line. The original railway closed in 1965, with the track being lifted in 1975.