There are 1 book by Gi Gi O'Brien on BookOrb. A strong starting point is The Intelligence of Happiness (2021). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Gi Gi O'Brien written?
BookOrb lists 1 book by Gi Gi O'Brien.
Where should I start with Gi Gi O'Brien?
A good starting point is The Intelligence of Happiness (2021).
What is the Gi Gi O'Brien books in order list?
In publication order: 1. The Intelligence of Happiness (2021).