Carnsore Point (Irish: Carn tSóir or Ceann an Chairn)[1] is a headland in the southeast corner of County Wexford, Ireland. It marks the southernmost point of the Irish Sea,[2] on the western side of St George's Channel.
Ptolemy's Geography (2nd century AD) described a point called Ιερον (Hieron, "sacred promontory") which probably referred to Carnsore Point.[3]