Coordinates: 53°25′N 4°20′W / 53.41°N 4.34°W / 53.41; -04.34

Amlwch is the most northerly town in Wales. It is situated on the north coast of the Isle of Anglesey, on the A5025 which connects it to Holyhead and to Menai Bridge. The town has no beach, but it has impressive coastal cliffs. Tourism is an important element of the local economy. At one time it was a busy port, with boats sailing to the Isle of Man and to Liverpool. A number of the houses date from the 19th century and add to the atmosphere of the town.

The local newspaper for northeastern Anglesey is Yr Arwydd ('The Sign').

The name Amlwch – a reference to the site of the town's harbour, Porth Amlwch – derives from Welsh am ("about, on or around") and llwch (an old word meaning "inlet, creek" - similar to the Gaelic word "loch" for a body of water).

According to legend in the Middle Ages, the town developed on a site that had a harbour but was not visible from the sea, which helped to reduce the chance of Viking attacks.^{[citation needed]}