Dunmore is a town in County Galway, Ireland. It is located on the N83 national secondary road at its junction with the R328 and R360 regional roads. The town belongs to an ancient tuath called Conmhaícne Dúna-Móir and Cenél Dubáin, ruled by Uí Conchobair of Ui Briuin Ai from the 12th century, and a capital of Connacht for a time. King Tairrdelbach Ua Conchobair died here in 1156. Until the early 1980s, the N83 through Dunmore was on the main road from Sligo to Galway City.