The O'Brien Press is a Dublin-based publisher, primarily of children's fiction and adult non-fiction. It has a growing repertoire of comics, including:
- Blood Upon the Rose (2009) by Gerry Hunt
- The "Murder Can Be Fatal" series by Alan Nolan:
- Death by Chocolate (2011)
- Six Million Ways to Die (2011)
- Destination: Homicide! (2012)
- And the Blood Flowed Green (2012)
- The Big Break Detectives Casebook (2011) by Alan Nolan
- Brian Boru (2011) by Damien Goodfellow
- Where's Larry? (2012) by Philip Barrett
- At War With The Empire (2012) by Gerry Hunt
- Celtic Warrior: The Legend of Cú Chulainn (2013) by Will Sliney
- Big Jim (2013) by Rory McConville and Patrick Lynch
They also publish Bob Byrne's children's book Robots Don't Cry (2006).
