- O'Brien, Conan
The World's Worst Assistant
- O'Brien, Liam
Critical Role: Vox Machina--Kith & Kin
- O'Bryan, Tom
You Can Fix Your Brain
- O'Bryant, Karyn
The Map of Lost Memories, Who Was Joan of Arc?
- O'Connell, Mark
To Be a Machine, Notes from an Apocalypse
- O'Connor, John
His Dark Materials: The Golden Compass (Book 1)
- O'Connor, Nancy
The Enchanted Files: Trolled
- O'Connor, Sandra Day
The Majesty of the Law, Out of Order
- O'Donnell, Ellen
Bless This Mess
- O'Donnell, Lawrence
Playing with Fire
- O'Dowd, Chris
Fantastic Mr. Fox and Other Animal Stories
- O'Farrell, Maggie
The Marriage Portrait, Instructions for a Heatwave
- O'Halloran, Tim
Based on a True Story
- O'Hara-Baker, Jessica
The Mister
- O'Hare, Denis
Willpower, The Alchemyst
- O'Hurley, John
It's Okay to Miss the Bed on the First Jump
- O'Keefe, Michael
The Way of Leadership
- O'Leary, John
In Awe
- O'Malley, Rory
How to Survive a Plague
- O'Malley, Susan
American Sphinx
- O'Mara, Jason
The Break Line, All Fall Down
- O'Neal, Ryan
Both of Us
- O'Neal Johnston, Amber
A Place to Belong
- O'Neil, Cathy
Weapons of Math Destruction, The Shame Machine
- O'Neil, Dana
The Big East
- O'Neill, Eric
Gray Day
- O'Neill, Heather
The Likeness, The Minister's Daughter
- O'Reilly, Bill
A Bold Fresh Piece of Humanity, Who's Looking Out For You?
- O'Rourke, Meghan
The Long Goodbye, The Invisible Kingdom
- O'Sullivan, Suzanne
The Sleeping Beauties
- O'Toole, Mike
The Unconventionals
- Oakes, Summer Rayne
How to Make a Plant Love You
- Oakley, Barbara
Mindshift, Uncommon Sense Teaching
- Oakley, Bill
Serious Eater
- Obama, Barack
Of Thee I Sing, The Audacity of Hope
- Obama, Michelle
Becoming, Follow That Food! (Waffles + Mochi)
- Oben, Joyce
The Gift of Hope
- Oberon, Elea
LeBootcamp Diet
- Obi, Damaras
Turning 15 on the Road to Freedom
- Obi-Melekwe, Nkeki
Ties That Tether, Rebel Sisters
- Obiora, Michael
African Town, Horse
- Obongjayar,
Vagabonds!
- Ochlan, P.J.
Breaking Bread with the Dead, How to Think
- Ochlan, PJ
little scratch, Purgatory's Shore
- Ochman, Joe
Island of Vice, The Revolution Was Televised
- Odenkirk, Bob
Comedy Comedy Comedy Drama
- Odom, Leslie
Like No Other
- Oduye, Adepero
War Girls, The Beautiful Ones
- Oelwang, Jean
Partnering
- Offerman, Nick
Lincoln in the Bardo, All Rise
- Offill, Jenny
Dept. of Speculation, Weather
- Oh, Ellen
Flying Lessons & Other Stories
- Oh, Jina
A Step From Heaven
- Oh, Sandra
Human Acts
- Ojo, Adenrele
Who Was Coretta Scott King?, A People's Future of the United States
- Okoye, Nneka
Jasmine Green Rescues: A Goat Called Willow, Jasmine Green Rescues: A Kitten Called Holly
- Okpo, Arit
Vagabonds!
- Okuboyejo, Sandra
Minecraft: The Haven Trials, African Town
- Olbermann, Keith
Trump is F*cking Crazy
- Older, Daniel José
Last Shot (Star Wars), From a Certain Point of View (Star Wars)
- Older, Daniel Jose
Brave the Page
- Oldjohn, Khalipa
The First Part Last
- Olds, Sharon
Stag's Leap, Balladz
- Oliveira, Annette Amelia
Neruda on the Park, History Smashers: The Mayflower
- Oliver, Genesis
We Were the Fire, Take Back the Block
- Oliver, Mary
Blue Horses, Dog Songs and A Thousand Mornings
- Olivo, Karen
The Brief Wondrous Life of Oscar Wao
- Olmstead, Grace
Uprooted
- Olorunnipa, Toluse
His Name Is George Floyd, His Name Is George Floyd
- Olsen, Elizabeth
Hattie Harmony: Worry Detective
- Olsher, Dean
The Stuff of Thought
- Oluseyi, Hakeem
A Quantum Life
- Onayemi, Prentice
Call Me American, Wild Cards III: Jokers Wild
- Ondaatje, Michael
Anil's Ghost, The English Patient
- Onwuachi, Kwame
Notes from a Young Black Chef (Adapted for Young Adults), Notes from a Young Black Chef
- Onwukue, Ben
The Mermaid of Black Conch
- Onwukwe, Ben
Gnomon, An Island
- Oppenheimer, Jane
Killers of a Certain Age
- Oppenheimer, Mark
Squirrel Hill
- Ordunio, Doug
Crashing Through, Guns, Germs, and Steel
- Oren, Michael B.
Ally
- Oreskes, Dan
L.A. Rex
- Oreskes, Daniel
Suite Francaise, Haunting Paris
- Orji, Yvonne
Good Night Stories for Rebel Girls: 100 Immigrant Women Who Changed the World
- Orloff, Judith
Emotional Freedom, Positive Energy
- Orloff, Judith
The Power of Surrender, The Ecstasy of Surrender
- Orlow, Rich
The Ruins, Ring of Fire
- Orman, Roscoe
They Had a Dream
- Orman, Suze
The Money Class, Women & Money (Revised and Updated)
- Orner, Peter
Maggie Brown & Others
- Ornish, Anne
Undo It!
- Ornish, Dean
Undo It!, Enjoy Every Sandwich
- Orsini, Jon
The Grandmother Plot, The Ultimate Stay-At-Home Dad
- Ortega, Roxana
A People's Future of the United States, A Visit from the Goon Squad
- Orth, Maureen
Vulgar Favors
- Ortiz, Jaina Lee
The Beloved World of Sonia Sotomayor
- Ortiz, Laura
The Care and Feeding of a Pet Black Hole, Little Roja Riding Hood
- Osborne, Mary Pope
World at War, 1944, Magic Tree House Collection: Books 25-28
- 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,
Coming Home to Yourself, A Course in Meditation
- Osmundson, Joseph
Virology
- Osorio, Ana
Déjate llevar, The Grief Keeper
- Osorio, Lee
Hilo Book 3: The Great Big Boom, Even the Darkest Night
- Ospina, Alejandra
Disability Visibility: First-Person Stories from the Twenty-First Century
- Oster, Emily
The Family Firm, Cribsheet
- Osunde, Eloghosa
Vagabonds!
- Oswalt, Patton
The United States of Absurdity, Care To Make Love In That Gross Little Space Between Cars?
- Otigba, Atta
Vagabonds!
- Ott, Tovah
Sellout, Beasts of Prey
- Ovens, Sarah
The Adults, Under a Dancing Star
- Ovitz, Michael
Who Is Michael Ovitz?
- Owen, Andrea
Make Some Noise
- Owens, Bobbi
Up Close: Oprah Winfrey
- Owens, Zibby
Princess Charming
- Owusu, Jude
This Book Will Make You Kinder
- Oyeyemi, Helen
Peaces, Gingerbread
- Ozawa, Louis
The Fervor, Facing the Mountain
- Ozeki, Ruth
The Book of Form and Emptiness
