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| X | Book and author | Other notes |
| Xander | Thunderbolt by Wilbur Smith | |
| Y | Book and author | Other notes |
| Yanka | The Girl Who Speaks Bear by Sophie Anderson | |
| Yasmin | Yasmin the Night Owl Fairy by Daisy Meadows | S |
| Yeva | You Don’t Know What War Is: the Diary of a Young Girl from Ukraine by Yeva Skalietska | !, N |
| Z_______: | Book and author | Other notes |
| Zacharias | Harry Potter series by J. K. Rowling Goodnight Mister Tom by Michelle Magorian | S, V ! |
| Zachary | Hairy Maclary and Zachary Quack by Lynley Dodd | |
| Zack | Best Dog Bonnie by Bel Mooney My Brother is a Superhero books by David Solomons | S S |
| Zadie | Zadie the Sewing Fairy by Daisy Meadows | |
| Zaiba | Agent Zaiba Investigates by Annabelle Sami | S |
| Zainab | Zainab the Squishy Toy Fairy by Daisy Meadows | S |
| Zara | Zara the Starlight Fairy by Daisy Meadows The Thames and Tide Club by Katya Balen | S |
| Zazi | Grandad Mandela by Zazi, Zindzi and Ziwelene Mandela | N |
| Zebedee | The Magic Roundabout books by Eric Thompson | S |
| Zelda | Once by Morris Gleitzman | ! |
| Zen | Dead Good Detectives by Jenny McLachlen | |
| Zena | Best Dog Bonnie by Bel Mooney | S |
| Zindzi | Grandad Mandela by Zazi, Zindzi and Ziwelene Mandela | N |
| Ziwelene | Grandad Mandela by Zazi, Zindzi and Ziwelene Mandela | N |
| Zoë Zoey | Zoe the Skating Fairy by Daisy Meadows Zoe’s Rescue Zoo books by Amelia Cobb Sam Wu is Not Afraid of… books by Kevin and Katie Tsang The Faraway Truth by Janae Marks There’s a Viking in My Bed! by Jeremy Strong Dork Diaries books by Rachel Renée Russell | S S S S |
| Zofia | The Light in Everything by Katya Balen | |
| Zola | Stuntboy: In Between Time by Jason Reynolds | S |
Storybook names 