Coolestown (Irish: Baile an Chúlaígh) is a barony in County Offaly (formerly King's County), Ireland.

[1] Coolestown is located in easternmost County Offaly.

Coolestown was part of the ancient divisions known as Túath Dá Maige (túath of the Two Plains), and Ferran Uí Muircáin lying east of the Figile River.

The Uí Muircáin (Morahan, Moran) were a sub-sept of Clan Colgan.

This article related to the geography of County Offaly, Ireland is a stub.