Here's a list of books for kids who like horses, sorted by grade level:
Beauty by Bill
She was an old horse, but she still had a lot of life in her. And she was the best friend Luke needed after the pain of his parents' divorce and the move to Oklahoma to live with his difficult grandfather
Ghost Horses series
by Gloria Skurzynski
Jack and Ashley explore Zion National Park with their family as Dr. Olivia Landon investigates the strange deaths of some wild white mustangs. When two Shoshone kids, Ethan and Summer, are placed in the Landons' foster care, trouble begins.
Hoofbeats series by
While her father is away fighting the Normans and other Irish clans, nine-year-old Lara works hard to help harvest food and also cares for the pregnant gray mare that she loves.
Horse Diaries series by various authors
Justin Morgan Had a Horse by Marguerite Henry
Joel Goss knows that Little Bub is a special colt, even though he's a runt. And when schoolteacher Justin Morgan asks Joel to break the colt in, Joel is thrilled!
National Velvet by
A fourteen-year-old English girl wins a horse in a raffle, trains it, and rides it in the Grand National steeplechase.
My Friend Flicka by Mary O'Hara
Stealing Thunder by
Libby visits her neighbor's spirited horse Thunder every day, grooming and riding him, and when Mr. Porter starts to abuse Thunder she decides to steal him away to safety, with the help of her new friend Griff.
Black Beauty by Anna
A horse in nineteenth-century England recounts his experiences with both good and bad masters.
Colorado Summer by Larry Bograd
Born and bred in New York City, eleven-year-old Carrie is not looking forward to spending the summer on her aunt's Colorado ranch until she is introduced to Georgia, a Paint horse that is as swift as the wind.
Heartland series by Lauren Brooke
Horseshoe Trilogies by Lucy Daniels
King of the Wind by
Sham and the stable boy Agba travel from Morocco to France to England where, at last, Sham's majesty is recognized and he becomes the "Godolphin Arabian," ancestor of the most superior Thoroughbred horses.
Lucky Lady by Susan Saunders
On a summer visit to her grandfather's ranch in Texas, twelve-year-old Jamie impulsively spends all her money on a wild filly and tries to figure out how to train her.
Misty series by Marguerite Henry
Paint the Wind by Pam Munoz Ryan
After her overprotective grandmother has a stroke, Maya, an orphan, leaves her extremely restricted life in California to stay with her mother's family on a remote Wyoming ranch, where she discovers a love of horses and encounters a wild mare that her mother once rode.
Phantom Stallion series by Terri Farley
Spirit Horse by Ned
When a Siksika boy living on the Plains during the 1770s becomes separated from a raiding party, he discovers the legendary spirit horse which he attempts to track down and tame.
Black Stallion series by Walter Farley
Racing to Freedom trilogy by Alison Hart
Smoky: The Cowhorse
by Will James
The experiences of a mouse-colored horse from his birth in the wild, through his capture by humans and his work in the rodeo and on the range, to his eventual old age.
A Good Horse by Jane
On her family's California horse ranch in the 1960s, eighth-grader Abby Lovitt faces the possibility of giving up her beloved colt, Jack, when it comes to light that his dam might have been stolen.
High Hurdles by Lauraine Snelling