Click for key
| I | Book and author | Other notes |
| Ida | Dotty by Erica S. Perl | |
| Imogen | Imogen the Ice Dance Fairy by Daisy Meadows | S |
| India | India the Moonstone Fairy by Daisy Meadows | S |
| Irene | Brave Irene by William Steig | |
| Iris | How to Hide a Lion by Helen Stephens Iris and Isaac by Catherine Rayner | S |
| Isaac | The Very Helpful Hedgehog by Rosie Wellesley Isaac’s Dreamcatcher by Bonnie Farmer Iris and Isaac by Catherine Rayner The Rhythm of the Rain by Grahame Baker-Smith | |
| Isabel Isabella (see also Izzy) | Mine! by Hiawyn Oram Isabella the Air Fairy by Daisy Meadows The Girl of Ink and Stars by Kiran Milwood Hargrave | S ! |
| Isadora | Isadora Moon books by Harriet Muncaster | S |
| Isla | Isla the Ice Star Fairy by Daisy Meadows The Boy Who Fooled the world by Lisa Thompson | S |
| Ivan | By the Light of the Moon by Tom Percival The One and only Ivan by Katherine Applegate | ! |
| Ivor | Ivor the Engine by Oliver Postgate | S |
| Ivy | The Princess and the Frog by Jonathan Langley Ivy the Worry Fairy by Daisy Meadows TrooFriend by Kirsty Applebaum (Ivy is a robot) | S |
| Izzy (see also Isabel) | Izzy the Indigo Fairy by Daisy Meadows Izzy Gizmo by Pip Jones and Sara Ogilvie Izzy’s River by Holly Webb Nothing Ever Happens Here by Sarah Hagger-Holt | S |
