Cullahill or Cullohill (Irish: Cúlchoill / an Chúlchoill, meaning 'the back of the woods/behind the woods') is a small village situated on the R639 road in County Laois, Ireland.

A priory of Augustine canons was founded here in 550 by O'Dempsey, under the invocation of St. Tighernach who is now the patron saint of the area.

The village is home to an impressive early 15th century tower house, once the principal stronghold of the MacGillapatricks of Upper Ossory.

Cullohill is surrounded by countryside and has several public walkways and trekking trails in the nearby hills.

[5] TFI Local link operated by JJ Kavanagh and Sons provides a daily journey each way from Portlaoise to Cashel 828 and Thurles 858 replacing M&A Coaches, Bus Eireann and Aircoach [citation needed] The local GAA club is The Harps which was formed in 1984 as an amalgamation with Durrow.