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| K | Book and author | Other notes |
| Kaleb | The Switching Hour by Damaris Young | |
| Karl | Zen Panda books by Jon J. Muth Animal Rescue books by Tina Nolan Clockwork by Philip Pullman | S S |
| Karol (m) | The Astounding Broccoli Boy by Frank Cotrell Boyce | |
| Kate Katie Kat Katy | Bathwater’s Hot by Shirley Hughes Kate, the Cat and the Moon by David Almond Kate the Royal Wedding Fairy by Daisy Meadows Katie Morag books by Mairi Hedderwick The Best Party of Them All by Hiawyn Oram Katie art books by James Mayhew Katie McGinty Wants a Pet by Jenna Harrington Katie the Kitten Fairy by Daisy Meadows The Owls of Blossom Wood by Catherine Coe Harry Potter books by J. K. Rowling Kat the Jungle Fairy by Daisy Meadows The London Eye Mystery by Siobhan Dowd Girl 38: Finding a Friend by Ewa Jozefkowicz Katy Cat by Lucy Cousins Sick as a Parrot by Michaela Morgan The Visitors Who Came To Stay by Annalena McAfee What Katy Did by Susan Coolidge | S S S, BP S S S, ! S S |
| Katherine Kathryn | Counting on Katherine by Helaine Becker Kathryn the PE Fairy by Daisy Meadows | N S |
| Kathleen | Dogsbody by D.W. Jones | |
| Kayla | Kayla the Pottery Fairy by Daisy Meadows | S |
| Keira | Keira the Film Star Fairy by Daisy Meadows | S |
| Keith | Keith the Cat with the Magic Hat by Sue Hendra All About Keith by Davey Moore (a Claude book) | |
| Kelly | Buried Alive! by Jaqueline Wilson | |
| Kerry | Topsy and Tim and the Dinosaurs by Gareth and Jean Adamson | |
| Kevin | Wibbly Pig books by Mick Inkpen Super Snail by Elys Dolan The Legend of Kevin by Philip Reeve | |
| Kezia | Flamingo Boy by Michael Morpurgo | |
| Kimberley | Kimberley the Koala Fairy by Daisy Meadows | S |
| Kirsty | The Rainbow Fairies books by Daisy Meadows | S |
| Kit (f) Kittie Kitty | The Dragon in the Library by Louie Stowell Fairytale Hairdresser books by Abie Longstaff It’s Not Fair! and other books by Bel Mooney Pudge’s Play by Hiawyn Oram Kitty the Tiger Fairy by Daisy Meadows Evie’s War by Holly Webb The Secret Diary of Kitty Cask by Philip Ardagh Matt Millz by Harry Hill | S S S ! |
| Klaus | A Series of Unfortunate Events books by Lemony Snicket | S |
| Koko | The Astounding Broccoli Boy by Frank Cotrell Boyce | |
| Konnie | Konnie the Christmas Cracker Fairy by Daisy Meadows | S |
| Kya | Tilly’s Horse, Magic books by Pippa Funnell | S, V |
| Kylie | Kylie the Carnival Fairy by Daisy Meadows | S |
