St. Aidan's Cathedral is the cathedral church of the Roman Catholic Diocese of Ferns. It is located in Enniscorthy, County Wexford, in Ireland. It was built in 1843 and was designed by Augustus Welby Pugin. The saint to whom the cathedral is dedicated is Máedóc of Ferns (feast day 31 January), also known as Áedan or Aidan, who died in 626, and not to be confused with St.