Barnacahoge Cashel
Native name Caiseal Cluain Meirg (Irish)
Location of Barnacahoge Cashel in Ireland
Type	stone ringfort
Location	Barnacahoge, Swinford, County Mayo, Ireland
Coordinates	53°54′20″N 8°51′23″W / 53.905452°N 8.856397°W / 53.905452; -8.856397
Elevation	136 m (446 ft)
Built	c. AD 700
National monument of Ireland
Official name	Barnacahoge Cashel
Reference no.	561

Barnacahoge Cashel, is a stone ringfort (cashel) and National Monument located in County Mayo, Ireland.^[1]

Barnacahoge Cashel is located on a hill immediately west of Ireland West Airport.^[2]

Barnacahoge Cashel was constructed in early Christian period (7th or 8th century AD) and may have been inhabited as late as the 18th century. Within the shelter of these stone walls were thatched dwellings of mud and wattle, and pens into which livestock could have been herded when threatened by enemies.^{[citation needed]}

It was rediscovered in 1976–77.^{[citation needed]}

Encircling the flat summit are the remains of a wall 1.5 m (4 ft 11 in) thick and 16 m (52 ft) in diameter.