Mydroilyn is a village in the parish of Llanarth, Ceredigion, situated along the B4342 road. It is a popular area for tourist accommodation during the summer months. Numerous old cottages, farmhouses, stables and mills have been converted into holiday homes. Of particular note is the 200-year-old farmhouse Aelybryn, which once belonged to a Welsh landowner. The village contains the Holy Trinity Church, Mydroilyn Independent Chapel, dated to 1898 by David Davies, and Y Ficar Wesleyan Chapel, dated to 1849. There is also a small 19th century corn-mill named Y Felin.
Coordinates: 52°10′29″N 4°15′30″W / 52.17474°N 4.25823°W