The parish church of Llanmaes is dedicated to St Cadoc (St Cattwg), and although the present building dates back to the 13th century it is obviously of a much earlier Celtic foundation.
It consists of chancel, nave, south porch and western tower containing three bells. The chancel and nave are divided by a wooden screen, the surviving part of the original wooden rood screen.
The western part of the north wall of the nave is covered with medieval wall paintings which are said to represent St George and the dragon, though some imagination is required to confirm this! The massive Norman font is tub-shaped with roll mountings on the rim.
Llanmaes was noted in these parts for the long life of many of its
inhabitants, and in the registers (from 1583) there are a number of people who lived to be more than a hundred years old.