Which river flows through the Irish capital of Dublin?

The River Liffey (Irish: An Life) is a river in Ireland, which flows through the centre of Dublin. Its major tributaries include the River Dodder, the River Poddle and the River Camac. The river supplies much of Dublin's water and a range of recreational opportunities.

The river was previously named An Ruirthech, meaning "fast (or strong) runner". The word Liphe (or Life) referred originally to the name of the plain through which the river ran but eventually came to refer to the river itself. It was also known as the Anna Liffey, possibly from an anglicisation of Abhainn na Life, the Irish phrase that translates into English as "River Liffey". James Joyce personified the river as "Anna Livia Plurabelle" in Finnegans Wake.

The Liffey rises in the Liffey Head Bog between Kippure and Tonduff in the Wicklow Mountains, forming from many streamlets at Sally Gap. It flows for 132 km (82 mi) through counties Wicklow, Kildare and Dublin before entering the Irish Sea at its mouth at the midpoint of Dublin Bay, on a line extending from the Baily lighthouse to the Muglin Rocks. It crosses from County Wicklow into County Kildare at Poulaphouca and from County Kildare into County Dublin at Leixlip, with most of its length being in Kildare.