The River Feale (An Fhéil or Abhainn na Féile in Irish) rises near Rockchapel in the Mullaghareirk Mountains of County Cork in the southwest of Ireland and flows northwestwards for 75 kilometres [1] through Mountcollins and Abbeyfeale in County Limerick and Listowel in County Kerry before finally emptying into Cashen Bay, a wide estuary north of Ballyduff.

It merges into the River Shannon's estuary, which joins with the Atlantic Ocean with a flow rate of 34.6 m2/s.

The headwaters of the Feale rise approximately 4.3 km northeast of the village of Rockchapel between the townlands of Rockhill West, Rockhill East and Tooreenmacauliffe on the southwestern slopes of Mullaghareirk mountain.

According to Geoffrey Keating's Foras Feasa ar Éirinn (compiled in the 1630s), the river takes its name from a legendary woman:[4][5] Fuair Fial bean Lughaidh mic Íotha bás do náire ar bhfaicsin a nochta da céile ar dteacht ó shnámh dhi; gonadh uaithe ghairmthear Innbhear Féile don abhainn sin ó shoin i leFial wife of Lughaidh son of Ioth died of shame on her husband seeing her naked as she returned from swimming; and from her that river has ever since been called Innbhear Feile In County Limerick and north Kerry, the Feale is also referred to as one of the Three Sisters.

This term is not to be confused with three of Ireland's larger rivers, the Nore, the Suir and the Barrow, which are also collectively referred to as The Three Sisters.