Castleisland (Irish: Oileán Ciarraí)[2] is a town and commercial centre in County Kerry in south west Ireland.

The main ruin is the de Marisco tower, located behind some private houses at the western end of the town, on the Killarney Road.

[13][14] A vagrant juvenile bald eagle was captured near Castleisland in November 1987, exhausted after reputedly flying across the Atlantic Ocean from North America.

There are several buildings of note in Castleisland, including the Gothic-styled Church of St. Stephen and St. John which was designed by Doolin and built in 1880.

The library was burnt down in 1920, and replaced by the present structure in 1929 and is located at the eastern end of Castleisland's main street.

The function of the town library was moved to new premises in 2008, but the original building is still used as the district court for the area.

[16] Since the 1990s, traffic congestion had been an issue for Castleisland,[citation needed] as the main road linking most of County Kerry to Limerick and Dublin passed through the town.

This resulted in traffic congestion in Castleisland, with delays of over half an hour possible at peak times.

[citation needed] On 22 October 2010, the bypass was officially opened by the then Minister for Defence, Tony Killeen.

They won the All-Ireland Senior Club Football Championship in 1985, beating St. Vincents of Dublin in the final.

The club were also the winner of the 2010 series of RTÉ reality television show Celebrity Bainisteoir, while managed by singer Derek Burke of Crystal Swing.