Princess Triana Book refers to a fantasy book series that exists within the WordGirl series. As the title implies, it involves a Princess named Triana, and includes mythical creatures such as ogres. It was first introduced in the episode Princess Triana and the Ogre of Castlebum, but the book has also appeared briefly in other episodes, including Nocan the Contrarian (episode), Trustworthy Tobey, and Granny's Book Club. It is a favorite book of Becky Botsford.