Llain-y-gawsai (also known as Llangawsai) is a village in Llanbadarn Fawr, Ceredigion, Wales. It is 74.6 miles (120.1 km) from Cardiff and 178.8 miles (287.8 km) from London. It is represented in the Senedd by Elin Jones (Plaid Cymru) and the MP Ben Lake (Plaid Cymru).