AMLWCH (am'looch), market town of Anglesey, north Wales, situated on slightly rising ground on the north-east coast of the island, 15 m. N.W. of Beaumaris. Rather more than three miles distant on the coast are the remains of a Romano-British earthwork, while near at hand a mediaeval settlement is repre sented by the Llanllaianau monastery. Amlwch seems to have been one of the fishing villages that grew up on the coast in asso ciation with these older sites.
In the 18th century the town came into prominence as the port for the rich copper mines of Parys mountain about two miles south of the town. There are traditions of the mines being worked inter mittently from Roman days, but they reached their maximum activity between 1768 and 1870, and they are now derelict. The population in 1841 was 6,217 and in 1931 was 2,561. Industries at one time included slate-quarrying, still carried on to a limited extent, shipbuilding, iron and brass foundries, alum, vitriol, manure and tobacco works. Amlwch is the terminus of the branch line from Gaerwen to Amlwch, formerly the Anglesey Central Railway, and now run by the L.M.S.R.