Brownshill Dolmen (Dolmain Chnoc an Bhrúnaigh in Irish) 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. The tomb is listed as a National Monument. 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 dolmen has not been excavated. A nearby fourth upright stone stands close by and might be the remains of a forecourt.