Ninnidh's hill') is a barony in County Fermanagh, Northern Ireland.

[2] To its east lies Upper Lough Erne, and it is bordered by four other baronies in Northern Ireland: Clanawley to the north-west; Tirkennedy to the north; Magherastephana to the north-east; and Coole to the east.

[2] It also borders two baronies in the Republic of Ireland: Loughtee Lower to the south; and Tullyhaw to the south-west.

St. Ninnid is listed as one of the "twelve apostles of Ireland", and bore the epithet of Saobhruisc meaning "squinting", given rise to the names; "the squinting saint" or "one-eyed saint".

[3] The hill of St. Ninnid lies on the southern shore of Upper Lough Erne.