St Eleth's Church, Amlwch is a parish church built in the Neo-classical style in 1800 in Amlwch, a town on the island of Anglesey in north Wales. It stands on the site of earlier buildings, with the first church here said to have been established by St Elaeth (or Eleth) in the 6th century. Increasing prosperity in the town through copper mining during the 18th century led to the construction of a new church to serve the growing population.