Ballinalacken Castle is a two-stage tower house located in Killilagh parish of County Clare, Ireland.

[1]: 113–5 It is located in the region known as the Burren on a limestone outcrop overlooking the roads from Lisdoonvarna to Fanore and Doolin.

Following the 1641 rebellion and subsequent Cromwellian reorganization, Turlough's son Daniel petitioned the English Commission in 1654 to save the house from demolition.

The house remained in the possession of the Ennistymon O'Briens until the middle of the 18th century, when it passed to a different branch of the family.

[3][1]: 113–5 [4]: 15 The bow fronted bungalow-type Ballinalacken Castle Hotel was built in the 1840s as the home of Lord O'Brien.

A porter's lodge faces the circular stairs from which three floors of bedrooms are accessed, lit by small windows.