Brownshill Dolmen (Irish: Dolmain Chnoc an Bhrúnaigh) is a very large megalithic portal tomb situated 3 km east of Carlow, in County Carlow, Ireland.

Its capstone weighs an estimated 150 metric tons, and is reputed to be the heaviest in Europe.

[3] Known as the Kernanstown Cromlech, sometimes spelled as Browneshill Dolmen, it is sited on the former estate house of the Browne family from which it takes its name.

The capstone is thought to have been covered by an earthen mound and a gate stone blocked the entrance.

A nearby fourth upright stone stands close by and might be the remains of a forecourt.