* Short Stories:
* The Last King of Summer: A collection of short stories from 1996.
* A Deeper You: A collection of short stories from 1996.
* The Uncommon Note: A collection of short stories from 2003.
* Novels:
* Exodus of St. James: A novel from 1997.
* The Daughters Of Medb: A Celtic fantasy trilogy that includes the following novels:
* Book One: Rún: A novel from 1999.
* Book Two: Tairg: A novel from 2000.
* Book Three: Nert: A novel from 2001.
* The Stone Prince of Vicovaro: A novel from 2012.
* The Darkling Plain: A novel from 2015.
* The Mirror City: A novel from 2017.
* The Dead Land: A novel from 2019.
* Poetry:
* Of Many Parts: A collection of poetry that was published in 2021.
* Young Adult:
* The Black Tide Rising: A young adult fantasy novel that was published in 2021.
* Graphic Novel:
* The Daughters Of Medb: Rún: A graphic novel that was published in 2020 and is an adaptation of the first book in his Daughters Of Medb trilogy.