Innisfallen or Inishfallen is an island in Lough Leane; one of the three Lakes of Killarney in County Kerry, Ireland.
Innisfallen is home to the ruins of Innisfallen Abbey, one of the most impressive archaeological remains dating from the early Christian period found in the Killarney National Park. The monastery was founded in 640 by Saint Finian and was occupied for approximately 950 years.