Connagan (died 849) was Abbot and Bishop of Clonfert, Ireland.

References

Seán Mac Airt; Gearóid Mac Niocaill, eds. (1983). The Annals of Ulster (to AD 1131). Translated by Mac Airt; Mac Niocaill. Dublin: Dublin Institute for Advanced Studies.
Annals of Tigernach at CELT: Corpus of Electronic Texts at University College Cork
Revised edition of McCarthy's synchronisms at Trinity College Dublin.
Byrne, Francis John (2001), Irish Kings and High-Kings, Dublin: Four Courts Press, ISBN 978-1-85182-196-9
Lysaght, Eamonn (1978), The Surnames of Ireland. ISBN 0-7165-2278-0, pp. 233–34.

Preceded byRechtabhra Abbot of Clonfert 848–849 Succeeded byCormac mac Ciaran