Authors
- O'Brien, Daniel
Your Presidential Fantasy Dream Team
- O'Connor, Jane
Good Job, George!
- O'Connor, Jim
What Was Pompeii?
- O'Dell, Kathleen
Ophie Out of Oz
- O'Dell, Scott
Island of the Blue Dolphins
- O'Neal, Eilis
The False Princess
- O'Neil, Carolyn Tara
Daughters of a Dead Empire
- O'Shaughnessy, Kate
The Lonely Heart of Maybelle Lane
- Obama, Barack
Dreams from My Father
- Obama, Michelle
The Light We Carry
- Ockler, Sarah
Bittersweet
- Odhiambo, Eucabeth
She Persisted: Wangari Maathai
- Oliver, Lin
Hank Zipzer #4: The Zippity Zinger
- Olsen, Elizabeth
Hattie Harmony: Worry Detective
- Oluseyi, Hakeem
A Quantum Life
- Onome, Louisa
Like Home
- Onwuachi, Kwame
Notes from a Young Black Chef (Adapted for Young Adults)
- Onyebuchi, Tochi
Rebel Sisters
- Opdyke, Irene Gut
In My Hands: Memories of a Holocaust Rescuer
- Oppel, Kenneth
Ghostlight
- Osborne, Mary Pope
Rhinos at Recess
- Ostow, Micol
Westminster Abby
- Otheguy, Emma
SofÃa Acosta Makes a Scene
- Otis, Chad
The Bright Side
- Owens, Zibby
Princess Charming