Rosclogher (Irish: Ros Clochair) is a barony in County Leitrim, Ireland.

[1] Rosclogher is found in north County Leitrim, reaching from its 3 km (2 mi) of Atlantic coastline (the least coastline of any coastal county), past Lough Melvin, east of the Kilcoo River, up to Saddle Hill.

The O'Murroughs, or O'Murreys, were chiefs in the barony of Rosclogher.

The MacClancy's were chiefs of Dartraighe (Dartry) in the barony of Rosclogher.

Uí Miadhachain (O'Meehan) is found here at the time of the Norman invasion of Ireland.