Series beginning with K
- Kane Chronicles
- Karlsson
- Kate on the Case
- Katie
- Katie Kazoo, Switcheroo
- Katy
- Katy's Ponies
- Keeper of the Lost Cities
- Keeper of the Realms
- Keepers
- Keepers and Seekers
- Keisha Jones
- Kenny
- Kevin and Sadie
- Kevin the Vampire
- Keys to the Kingdom
- Kicks
- Kid Normal
- Kidnapped
- Kiki Kallira
- Kiki Strike
- Killer Cat
- King Arthur Trilogy
- King Coo
- King of Scars
- King Raven
- Kingdom
- Kingdom Keepers
- Kingdom Keepers: The Return
- Kingdom of Silk
- Kingdom of Wrenly
- Kingdom on Fire
- Kingdoms and Empires
- Kiranmala and the Kingdom Beyond
- Kiss
- Kissing Booth
- Kit Sadler
- Kite Identity
- Kitten
- Kitty
- Kitty Slade
- Kitty's Magic
- Klawde: Evil Alien Warlord Cat
- Knight Sir Louis
- Knightley and Son
- Knights and Bikes
- Knights Haddon
- Knights of Liofwende
- Knights of the Borrowed Dark
- Knitbone Pepper Ghost Dog
- Knots Sequence
- Kronos Chronicles
- Kung-Fu Pigs
- Kurious Katz
- Kuromori
- Kyan Green