St. Begnet (7th century?), also Begneta, Begnete, Begnait or Becnait is a patron saint of Dalkey, Ireland. She is noted as a "virgin, not a martyr." Her feast day is November 12. Two ruined churches in Dalkey are named for Begnet, one on Dalkey Island, and the other near the 15th-century stone townhouse now serving as Dalkey Castle and Heritage Centre, in the area known as . A holy well located near the martello tower on the island is also associated with her; as the Irish playwright Hugh Leonard observed: