Let’s read books that start with the letter O! Part of a good Letter O lesson plan will include reading. A Letter O Book List is an essential part of your preschool curriculum whether that is in the classroom or at home. In learning the letter O, your child will master letter O recognition which can be accelerated through reading books with the letter O.

 Preschool Letter O Books - several letter O books covers shown on a yellow background surrounded by preschool letters - Kids Activities Blog
Check out these great books to help you learn the Letter O!


There are so many fun letter books for preschool age kids. They tell the letter O story with bright illustrations and compelling plot lines. These books work great for letter of the day reading, book week ideas for preschool, letter recognition practice or just sitting down and reading!

Related: Check out our list of best preschool workbooks!

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Words that start with the letter O like owl
Let’s read about the letter O!


Whether it be phonics, morals, or math, each of these books goes above and beyond teaching the letter O! Check out some of my favorites.

Letter O Book: Octopants

1. Octopants

–>Buy book here

The perfect pants are hard to find for someone shaped like me. Could Octopants be just the job? Why not dive in and see . . .? There are all-in-ones for urchins and slipper-socks for eels… but will Octopus ever find a pair of pants to fit? A hilarious rhyming romp, packed with underwater underwear!

Letter O Book: Ogilvy

2. Ogilvy

–>Buy book here

When Ogilvy moves to a new town, the possibilities feel endless. There are so many new bunny friends and fun things to do together! But in this town, bunnies in dresses play ball and knit socks, and bunnies in sweaters make art and climb rocks. Ogilvy wants to do everything? And won’t let a sweater or a dress get in the way. The letter O has some interesting sounds, as shown in this book.

I Want An Ostrich
Letter O Book: I Want an Ostrich

3. I Want an Ostrich

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I Want an Ostrich is a charming book about a boy wanting an ostrich narrated in fun rhyming verses with eye-catching illustrations. See how simple rhymes are elevated into engaging scenes designed to captivate young children while encouraging curiosity and exploration.

do not wish for a pet ostrich
Letter O Book: Do Not Wish For A Pet Ostrich!

4. Do Not Wish For A Pet Ostrich!

–>Buy book here

Follow the adventure and humor as a spunky child wishes for a pet ostrich of her very own.  Will it be everything she hopes for – or a big feathery mistake?  This delightful, rhyming tale about the fastest bird in the world has a surprise ending that is sure to bring a smile.

Undercover Ostrich
Letter O Book: Undercover Ostrich

5. Undercover Ostrich

–>Buy book here

Animals can be sneaky. But do you know who is especially sneaky? Undercover ostriches! They’re everywhere, and they’re masters at going undetected. You’ve probably seen one and just assumed it was another woodpecker or owl. The narrator of this book is on the case, following a single ostrich on his many adventures. 

Oscar Otter
Letter O Book: Oscar Otter

6. Oscar Otter

–>Buy book here

Oscar Otter builds his very own slide, far up in the mountains. No one can bother him there. Not even his family. But Oscar doesn’t know he is in danger. His enemy, the fox, is watching. But what the fox doesn’t know is that someone is watching him. This is an I Can Read Level 1 book – perfect for the letter O!

Letter O Book: Oliver

7. Oliver 

–>Buy book here

Oliver is a curious explorer, so he asks a lot of questions. Then, one day in the bathtub, he hears a strange gurgle. “What lives down the drain?” he wonders. Soon Oliver is headed down the drain in his homemade submarine on a spectacular mission. But will this clever inventor be able to discover a way back?

Related: Check out our list of best preschool workbooks

Letter N Books for Preschoolers

On The Train Shine A Lot
Letter O Book: On The Train

8. On The Train

–>Buy book here

Young engineers will delight in exploring all the hidden secrets On the Train. They simply hold the pages to the light to “see-through” the box cars of a freight train, the cabin of the passenger train, and much more. It’s an interactive, educational experience that will have them clamoring for more!

Once Upon A Time
Letter O Book: Once Upon A Timely

9. Once Upon A Timely

–>Buy book here

Whether you love them “glowingly like a dragon’s fire” or “toweringly like a castle’s spire,”, you want your children to enjoy reading. This adverb adventure is perfect for sharing with young readers. Developing vocabulary is so easy! From once upon a time to happily ever after, this adorable story is a brilliant addition to your shelves. A fun letter O book for your little ones!

On THe Mountain
Letter O Book: On The Mountain

10. On The Mountain

–>Buy book here

Stunning artwork accompanies cleaver rhymes! This easy book introduces nature from birds to bugs.

More Letter Books For Preschoolers

Oh! And one last thing! If you love reading with your children, and are on the hunt for age-appropriate reading lists, we have the group for you! Join Kids Activities Blog in our Book Nook FB Group.

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More Letter O Learning For Preschoolers

Which letter O book was your child’s favorite letter book?

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