Authors
- O'Brien, Daniel
Your Presidential Fantasy Dream Team
- O'Connor, Jane
Nina, Nina Ballerina
- O'Connor, Jim
Who Is Bob Dylan?
- O'Dell, Kathleen
Ophie Out of Oz
- O'Dell, Scott
Island of the Blue Dolphins
- O'Neal, Eilis
The False Princess
- O'Shaughnessy, Kate
The Lonely Heart of Maybelle Lane
- Obama, Barack
Of Thee I Sing
- Ockler, Sarah
Bittersweet
- Oliver, Lin
Hank Zipzer #4: The Zippity Zinger
- Onwuachi, Kwame
Notes from a Young Black Chef
- Onyebuchi, Tochi
War Girls
- Opdyke, Irene Gut
In My Hands: Memories of a Holocaust Rescuer
- Oppel, Kenneth
Hatch
- Osborne, Mary Pope
Magic Tree House Collection: Books 25-32
- Ostow, Micol
Westminster Abby
- Otheguy, Emma
The Madre de Aguas of Cuba