Séamas Dall Mac Cuarta (c. 1647? – 1733) was an Irish poet. He was the originator of a seventeenth and eighteenth century Irish language school of poets, centred on the south-east of the province of Ulster and north of Leinster. Mac Cuarta's work emerged from a region in which there was no previous strong poetic tradition, unlike in north-western Ulster, and inspired a number of followers such as Peadar Ó Doirnín and Art Mac Cumhaigh: the emergence of the work of Mac Cuarta and his followers may have been a conscious response to local pressures of anglicisation, and the collapse of the traditional Gaelic social order.