Caitríona O’Reilly was born in Wicklow and educated at Trinity College, Dublin, where she completed a Ph.D. in American Literature.
She has published three full collections of poetry with Bloodaxe Books. The Nowhere Birds (2001) was shortlisted for the Forward Prize for Best First Collection and was awarded the Rooney Prize in Irish Literature; The Sea Cabinet (2006), a Poetry Book Society Recommendation, was shortlisted for the Irish Times Poetry Now Award. Geis(2015) was a Poetry Book Society Recommendation and is jointly published by Bloodaxe Books and Wake Forest University Press in the United States. It was shortlisted for the 2016 Pigott Prize and was the winner of the 2016 Irish Times Poetry Now Prize. Caitríona O’Reilly also writes literary criticism.