Born in Newry, County Down, the eldest of 4 children, he grew up in Kilkenny, where his father, Patrick, worked as an engineer. He studied classical animation at Ballyfermot College in Dublin. During his final year at Ballyfermot in 1998, he co-founded the Cartoon Saloon animation studio in Kilkenny with Paul Young, Ross Murray and Nora Twomey.
He drew An Sclábhaí ("the slave", 2001) and An Teachtaire ("the messenger", 2003), a pair of Irish language comics telling the story of St. Patrick, written by Colmán Ó Raghallaigh and published by Cló Mhaigh Eo. He drew "Cricket in a Bag", written by his sister Catherine Moore, for the 2008 GOAL benefit anthology Sorry I can't take your call right now but I'm off saving the world.
He directed the animated feature film The Secret of Kells (2009), which has been nominated for the 2010 Oscar for Best Animated Feature Film, and created a graphic novel version of it, which has been published in French as Brendan et le secret de Kells. He is working on his second feature film, The Song of the Sea.
His illustrations have featured in several books including Gugalai Gug (2005) and The Story of Ireland (2009). He lives in Kilkenny with his wife Liselott Olofsson and son Ben.
- Cartoon Saloon
- The Blog of Kells: production blog for Brendan and the secret of Kells
- The Blog of the Sea: production blog for The Song of the Sea
- Sorry I can't take your call right now but I'm off saving the world
- Tomm Moore and The Secret of Kells on Wikipedia
- Review of An Scláibhaí and An Teachtaire by Katherine Farmar, 25 March 2007 (Google Cache)
- Brendan et le secret de Kells reviewed at BoDoi, 11 February 2009 (French - translation at at Forbidden Planet)
- Interview with The Comic Cast, 17 February 2009 (audio)
- Interview with Twitchfilm.net, October 2009
- Tomm Moore talks 'The Secret of Kells', The Film Stage, 5 October 2010