Cainnech of Aghaboe (515/16–600), also known as Saint Canice in Ireland, Saint Kenneth in Scotland, Saint Kenny and in Latin Sanctus Canicus, was an Irish abbot, monastic founder, priest and missionary during the early medieval period. Cainnech is one of the Twelve Apostles of Ireland and preached Christianity across Ireland and to the Picts in Scotland. He wrote a commentary on the Gospels, which for centuries was known as the Glas-Choinnigh or Kenneth's Lock or the Chain of Cainnech.

The Twelve Apostles of Ireland were twelve early Irish monastic saints of the sixth century who studied under St Finnian at his famous monastic school Clonard Abbey at Cluain-Eraird, now Clonard in County Meath.