I Am the Great Horse is a historical fantasy novel by English writer Katherine Roberts, published in August 2006 by The Chicken House and aimed at teens.

[1] The pair meet in Pella, Macedonia, and Alexander manages to be the only rider on Bucephalus after a battle in which Bucephalas lost his left eye by an enemy pike.

Katherine Roberts acknowledges that the characters Charmia and Tydeos, both grooms in the royal stable, are fictional, as is the evil horsemaster.

The prince is the young Alexander the Great, who he proudly carries into battle, blazing a trail to the very edge of the world in master's search for glory and adventure.

The girl, Charm, is a lowly stable hand, who brushes away the ghosts Bucephalas sees and forgives his arrogant ways.