There are many authors with the name John O'Brien. This profile contains various authors. See below for disambiguated authors.John O'Brien, Author of Leaving Las VegasJohn O'Brien, Children's Book Author & IllustratorJohn O'Brien, Pseudonym of Patrick Joseph Hartigan, PoetJohn O'Brien, Pioneer of Person Centered PlanningJohn O'Brien, Co-Founder and Editor of Review of Contemporary Fiction
