Spahill and Clomantagh Hill is a Special Area of Conservation (SAC) in County Kilkenny in the Republic of Ireland. The SAC is in the parish of Balleen and includes the townlands of Clomantagh (Mt Garrett) and Spahill, in Irish Spahill is Cnoc na Spá and Clomantagh Hill is An Chloch Mhantach'.