Llanfairpwll's claim to fame is that it has the longest village name in Britain, although it was originally simply called Llanfairpwllgwyngyll. In Victorian times, someone had the inspired idea of creating a new and record breaking name for the village to boost its attraction as a tourist venue, and that decision was clearly right, as evidenced by the tourists who continue to visit in large numbers to this day.

The record-breaking name is Llanfairpwllgwyngyllgogerychwrndrobwll-llantysiliogogogoch, which translates as St Mary's Church in the hollow of the white hazel near a rapid whirlpool and the Church of Saint Tysilio near the red cave. It is commonly abbreviated to Llanfair P.G.