Malltraeth

thumb|Malltraeth main street Malltraeth (origin: Mall (corrupt, blasted, desolate, + Traeth (beach))) is a small village in the southwest of Anglesey, Wales, in the community of Bodorgan. It is now at the end of a large bay, which used to extend much further inland, almost creating a second sea strait in the area (the Menai Strait broke through following the end of the ice age). The population as of the 2011 census was only 255.

After several abortive attempts, a long 'cob' or dyke was completed across it during the 19th century, allowing land reclamation behind it. Despite this, the land remains very wet and prone to flooding, much of it of great natural and scientific importance as a result. The former salt marsh creeks are still visible on aerial photography and evident as shallow depressions in the fields. Coal mining occurred for a time in the underlying Carboniferous rock strata and the subsidence of these workings resulted in the lakes "Llynnau Gwaith-glo".