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

References

• 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,

• Lysaght, Eamonn (1978), The Surnames of Ireland. , pp.233–34.