- O'Bryan, Tom
You Can Fix Your Brain
- O'Bryant, Karyn
Who Was Joan of Arc?, The Map of Lost Memories
- O'Connor, Sandra Day
The Majesty of the Law, Out of Order
- O'Donnell, Ellen
Bless This Mess
- O'Donnell, Lawrence
Playing with Fire, Playing with Fire
- O'Dowd, Chris
Fantastic Mr. Fox and Other Animal Stories, Fantastic Mr. Fox and Other Animal Stories
- O'Halloran, Tim
Based on a True Story
- O'Hara-Baker, Jessica
The Mister, The Mister
- O'Hare, Denis
The Alchemyst, The Alchemyst
- O'Hurley, John
It's Okay to Miss the Bed on the First Jump
- O'Keefe, Michael
The Way of Leadership
- O'Malley, Rory
How to Survive a Plague
- O'Mara, Jason
The Break Line
- O'Neal, Ryan
Both of Us
- O'Neil, Cathy
Weapons of Math Destruction
- O'Neill, Eric
Gray Day
- O'Neill, Heather
The Likeness, The Minister's Daughter
- O'Reilly, Bill
The Silence of War, The No Spin Zone
- O'Rourke, Meghan
The Long Goodbye
- Oakes, Summer Rayne
How to Make a Plant Love You
- Oakley, Barbara
Mindshift
- Oakley, Bill
Serious Eater
- Obama, Barack
Of Thee I Sing, Change We Can Believe In
- Obama, Michelle
Becoming, Becoming
- Oberon, Elea
LeBootcamp Diet
- Obi, Damaras
Turning 15 on the Road to Freedom, Turning 15 on the Road to Freedom
- Ochlan, P.J.
How to Think, A Bandit's Tale: The Muddled Misadventures of a Pickpocket
- Ochman, Joe
Law of the Jungle, Are You Smart Enough to Work at Google?
- Odom, Leslie
Like No Other
- Oduye, Adepero
The Invention of Wings, War Girls
- Offerman, Nick
Gumption, The Greatest Love Story Ever Told
- Oh, Ellen
Flying Lessons & Other Stories, Flying Lessons & Other Stories
- Oh, Jina
A Step From Heaven
- Oh, Sandra
Human Acts
- Ojo, Adenrele
Standing Tall, Radical Hope
- Olbermann, Keith
Trump is F*cking Crazy
- Older, Daniel José
Last Shot (Star Wars), Last Shot (Star Wars)
- Oldjohn, Khalipa
The First Part Last
- Oliver, Mary
Dog Songs
- Olivo, Karen
The Brief Wondrous Life of Oscar Wao, The Brief Wondrous Life of Oscar Wao
- Olsher, Dean
The Stuff of Thought
- Onayemi, Prentice
Five-Carat Soul, New Boy
- Ondaatje, Michael
Divisadero, Warlight
- Onwuachi, Kwame
Notes from a Young Black Chef
- Onwukwe, Ben
Gnomon, The Gap of Time
- Ordunio, Doug
Guns, Germs, and Steel, Crashing Through
- Oren, Michael B.
Ally
- Oreskes, Dan
L.A. Rex
- Oreskes, Daniel
Suite Francaise, Haunting Paris
- Orloff, Judith
Second Sight, Positive Energy
- Orloff, Judith
The Power of Surrender, The Ecstasy of Surrender
- Orlow, Rich
Operator Down, Daughter of War
- Orman, Roscoe
They Had a Dream
- Orman, Suze
Women & Money (Revised and Updated), The Money Class
- Ornish, Anne
Undo It!
- Ornish, Dean
Undo It!, Enjoy Every Sandwich
- Ortega, Roxana
American Heroin, A Visit from the Goon Squad
- Orth, Maureen
Vulgar Favors
- Ortiz, Jaina Lee
The Beloved World of Sonia Sotomayor, The Beloved World of Sonia Sotomayor
- Ortiz, Laura
The Care and Feeding of a Pet Black Hole, La Princesa and the Pea
- Osborne, Mary Pope
Twister on Tuesday, Ghost Town at Sundown
- Osborne, Steve
The Job
- Osbourne, Kelly
There Is No F*cking Secret
- Osgood, Nathan
The Road to Little Dribbling, The Road to Little Dribbling
- Osho,
A Course in Meditation, Coming Home to Yourself
- Osorio, Ana
The Grief Keeper, The Grief Keeper
- Ovens, Sarah
The Adults
- Ovitz, Michael
Who Is Michael Ovitz?
- Owens, Bobbi
Up Close: Oprah Winfrey
- Oyeyemi, Helen
Gingerbread, Gingerbread