Beaghmore is a complex of early Bronze Age megalithic features, stone circles and cairns, 8.5 miles north west of Cookstown, County Tyrone in Northern Ireland, on the south-east edge of the Sperrin Mountains.
There are seven low stone circles of different sizes, six of which are paired, twelve cairns and ten stone rows. The circles are between 10 and 20m in diameter, and are associated with earlier burial cairns and alignments of stone rows lead towards them. The stones are small with few more than 0.5m in height and the circles are distorted, suggesting they are related to kerbs surrounding some megalithic tombs. The singular circle is distinguished from the paired circles by its slightly larger stones.
The site also consists of low banks of small stones running below, and possibly pre-dating, the other structures which may have been field walls in the Neolithic period. Excavation has revealed that the site overlays a Neolithic cultivation site, and it is thought that the stones may have been erected in response to deteriorating soil fertility and the encroachment of peat. Following excavation a system of drainage channels had to be laid to prevent the stones from being reclaimed once again by the bog.