Ballyallaban ringfort, Archaeological site near Ballyvaughan, Ireland

Ballyallaban is a circular earthen fort near Ballyvaughan in County Clare with a surrounding water-filled moat. The inner enclosure spans roughly 30 meters across, while the outer edge including the moat extends to approximately 60 meters in diameter.

Ballyallaban is one of the few ringforts in the Burren that is not a stone dun; it appears on Burren maps as An Rath. Of the roughly 30,000 ringforts estimated in Ireland, 224 survive in County Clare, and excavated examples date from the late Bronze Age to the early Middle Ages, most to about 450–800 AD. The rampart was raised from earth dug out of the moat and was probably topped by a wooden palisade.

The name Ballyallaban comes from the Irish Baile Albóin, meaning "O Hallaban's house", and the fort is also marked on Burren maps as An Rath. Unlike most ringforts in the Burren, which are stone duns called caher, this one is an earthen rath. A bullaun stone lies at the neighbouring farm.

The site sits alongside the R480 road between Ballyvaughan and Leamaneh Castle and welcomes visitors year-round without restrictions. The ground around the ramparts can become muddy after rain, so sturdy footwear is advisable when exploring.

Trees and shrubs now grow across much of the ramparts, softening the earthen structure with vegetation. The moat fills with rainwater, revealing how water management played a role in the original design.