Maigh Seóla, also known as Hy Briuin Seola, was the territory that included land along the east shore of Lough Corrib in County Galway, Ireland. It was bounded to the east by the Uí Maine vassal kingdom of Soghain, extending roughly from Lough Corrib east to Knockma Hill and from Clarinbridge north to the County Mayo border. Its rulers belonged to the Uí Briúin Seóla and are sometimes found in the annals under the title "King of Uí Briúin" and "King of South Connacht". The earliest identifiable kings belonged to the line that became the Clann Cosgraigh. However, in later times the line which would become the Muintir Murchada, under the O'Flaherty chiefs, monopolized the kingship.