Dachuna was a medieval virgin saint venerated in Cornwall. Probably British in origin, Dachuna is known from the list of resting-places of Hugh Candidus, authored c. 1155. Dachuna, along with Medan and Credan, were allegedly associates of Saint Petroc, whom they rested alongside at the church of Bodmin.
- Blair, "Handlist", p. 563; Jankulak, Medieval Cult of St Petroc, p. 67
- Jankulak, Karen (2000), The Medieval Cult of St Petroc, Woodbridge: Boydell & Brewer, ISBN 0-85115-777-7
- Blair, John (2002), "A Handlist of Anglo-Saxon Saints", in Thacker, Alan; Sharpe, Richard, Local Saints and Local Churches in the Early Medieval West, Oxford: Oxford University Press, pp. 495–565, ISBN 0-19-820394-2