Findchán was an Irish priest in the 6th century AD. He was one of St Columba's missionary monks, and founded a monastery on the island of Tiree off the west coast of Scotland (now in Argyll and Bute).. According to the Life of St Columba, Findchán brought with him "as a pilgrim" a man called Áid the Black, to whom he was "greatly attached, in a carnal way" and who had previously murdered the King of Ireland. Findchán subsequently arranged for Áid to be ordained as a priest. This provoked the wrath of St Columba, who invoked a threefold curse on both Findchán and Áid.