There are 1 book by Christian O'Brien on BookOrb. A strong starting point is The genius of the few (1999). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Christian O'Brien written?
BookOrb lists 1 book by Christian O'Brien.
Where should I start with Christian O'Brien?
A good starting point is The genius of the few (1999).
What is the Christian O'Brien books in order list?
In publication order: 1. The genius of the few (1999).