Dunmore () is a barony in County Galway, Ireland.
Dunmore literally means "great fort". It gave its name to the Conmaicne Dúin Móir ("Conmaicne of Dunmore"), originally Cenél Dubáin.
Dunmore barony is situated in north of County Galway, directly south of county Mayo.
Dunmore barony was part of the ancient tuath of Conmaicne Dunmore, one of the original Connacht tribes.
Below is the list of parishes in Dunmore barony: