| Cynthia Kadohata | 
Kira-kira (age 10+) bigotry , family , friendship , illness/loss  | 
| Kathleen Karr | 
The Great Turkey Walk (age 9-12) enterprise , humor , historical  | 
| Riahi Kashani | 
My First Nowruz (age 8-11) family , identity , folklore , letters/journal  | 
| M. M. Kaye | 
The Ordinary Princess (age 8-11) princesses , fantasy , folklore  | 
| Marilyn Kaye | 
A Friend Like Phoebe: a Novel (age 9-12) school , friendship  | 
| Carolyn Keene | 
Bad Day for Ballet (age 7-10) in: Nancy Drew Notebooks mystery  | 
| 
The Lost Locket (age 7-10) in: Nancy Drew Notebooks mystery  | |
| 
The Witch Tree Symbol (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Whispering Statue (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Strange Message in the Parchment (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Sky Phantom (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Sign of the Twisted Candles (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Secret of the Old Clock (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Secret of the Golden Pavilion (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Secret of the Forgotten City (age 9-12) in: Nancy Drew Series mystery  | |
| 
the Secret of Shadow Ranch (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Secret of Red Gate Farm (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Secret of Mirror Bay (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Secret in the Old Attic (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Secret at Lone Tree Cottage (age 9-12) in: Nancy Drew Series mystery  | |
| 
Password to Larkspur Lane (age 9-12) in: Nancy Drew Series mystery  | |
| 
Nancy's Mysterious Letter (age 9-12) in: Nancy Drew Series mystery  | |
| 
Mystery of the Moss-Covered Mansion (age 9-12) in: Nancy Drew Series mystery  | |
| 
Mystery of the Ivory Charm (age 9-12) in: Nancy Drew Series mystery  | |
| 
Mystery of the Glowing Eye (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Mystery of the Fire Dragon (age 9-12) in: Nancy Drew Series mystery  | |
| 
Mystery of the Brass-Bound Trunk (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Mystery at Lilac Inn (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Moonstone Castle Mystery (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Message in the Hollow Oak (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Hidden Staircase (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Haunted Showboat (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Haunted Bridge (age 9-12) in: Nancy Drew Series mystery  | |
| 
The E-mail Mystery (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Double Jinx Mystery (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Clue of the Velvet Mask (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Clue of the Tapping Heels (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Clue of the Leaning Chimney (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Clue of the Dancing Puppet (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Clue of the Broken Locket (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Clue of the Black Keys (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Clue in the Old Stagecoach (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Clue in the Jewel Box (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Clue in the Crossword Cipher (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Bungalow Mystery (age 9-12) in: Nancy Drew Series mystery  | |
| 
The Baby-Sitter Burglaries (age 9-12) in: Nancy Drew Series mystery  | |
| Harold Keith | 
Rifles For Watie (age 10+) war , historical  | 
| Beverly Keller | 
Desdemona, Twelve Going on Desperate (age 9-12) friendship , humor , school  | 
| Eric Kelley | 
The Trumpeter of Krakow (age 9-12) adventure , folklore , historical  | 
| Jacqueline Kelly | 
The Evolution of Calpurnia Tate (age 9-12) family , nature , historical  | 
| Carol Kendall | 
The Gammage Cup (age 8-11) fantasy  | 
| S. A. Kennedy | 
Hey, Didi Darling (age 9-12) identity , the arts  | 
| Tim Kennemore | 
Circle of Doom (age 8-11) family , humor , magic  | 
| Peter Kent | 
Quest for the West: in Search of Gold (age 7-10) voyages/journeys , mystery , historical  | 
| Barbara Kerley | 
Greetings From Planet Earth (age 9-12) war , family , historical  | 
| Judith Kerr | 
When Hitler Stole Pink Rabbit (age 9-12) family , historical  | 
| P. B. Kerr | 
The Akhenaten Adventure (Children of the Lamp) (age 9-12) in: Children of the Lamp Series magic , adventure , fantasy  | 
| 
The Blue Djinn of Babylon (age 9-12) in: Children of the Lamp Series magic , adventure , fantasy  | |
| 
The Cobra King of Kathmandu (age 9-12) in: Children of the Lamp Series magic , adventure , fantasy  | |
| 
The Day of the Djinn Warriors (age 9-12) in: Children of the Lamp Series magic , adventure , fantasy  | |
| 
The Eye of the Forest (age 9-12) in: Children of the Lamp Series magic , adventure , fantasy  | |
| Jessica Scott Kerrin | 
Martin Bridge on the Lookout (age 7-10) in: Martin Bridge Series school , growing up , short stories  | 
| 
Martin Bridge: Blazing Ahead! (age 7-10) in: Martin Bridge Series school , growing up , short stories  | |
| Liz Kessler | 
The Tail of Emily Windsnap (age 8-11) in: The Emily Windsnap Series identity , friendship , family , fantasy  | 
| 
Emily Windsnap and the Monster from the Deep (age 8-11) in: The Emily Windsnap Series identity , friendship , family , fantasy  | |
| 
Emily Windsnap and the Castle in the Mist (age 8-11) in: The Emily Windsnap Series identity , friendship , family , fantasy  | |
| 
Emily Windsnap and the Siren's Secret (age 8-11) in: The Emily Windsnap Series identity , friendship , family , fantasy  | |
| Alexander Key | 
Escape to Witch Mountain (age 9-12) spooky , adventure , science fiction  | 
| 
Mystery of the Sassafras Chair (age 8-11) spooky , mystery  | |
| 
The Magic Meadow (age 9-12) illness/loss , science fiction  | |
| Dick King-Smith | 
A Mouse Called Wolf (age 8-11) adventure , enterprise , the arts  | 
| 
Babe: The Gallant Pig (age 8-11) brilliant protagonist , enterprise , humor  | |
| 
Harry's Mad (age 8-11) adventure , animals  | |
| 
Harriet's Hare (age 8-11) friendship , science fiction  | |
| 
Martin's Mice (age 8-11) friendship , humor  | |
| 
Pigs Might Fly: a Novel (age 8-11) enterprise , humor , growing up  | |
| 
The Invisible Dog (age 7-10) magic , animals  | |
| 
The Merman (age 8-11) friendship , fantasy  | |
| 
The Cuckoo Child (age 7-10) humor , nature  | |
| Jeff Kinney | 
Diary of a Wimpy Kid: Greg Heffley's Journal (age 9-12) in: Diary of a Wimpy Kid Series letters/journal , growing up , humor , school , friendship  | 
| 
Diary of a Wimpy Kid: Rodrick Rules (age 9-12) in: Diary of a Wimpy Kid Series letters/journal , growing up , humor , school , friendship  | |
| 
Diary of a Wimpy Kid: The Last Straw (age 9-12) in: Diary of a Wimpy Kid Series letters/journal , growing up , humor , school , friendship  | |
| 
Diary of a Wimpy Kid: Dog Days (age 9-12) in: Diary of a Wimpy Kid Series letters/journal , growing up , humor , school , friendship  | |
| 
Diary of a Wimpy Kid: The Ugly Truth (age 9-12) in: Diary of a Wimpy Kid Series letters/journal , growing up , humor , school , friendship  | |
| Rudyard Kipling | 
The Elephant's Child (age 8-11) animals , folklore  | 
| 
How the Camel Got His Hump (age 8-11) animals , folklore  | |
| Gelsey Kirkland | 
The Little Ballerina and Her Dancing Horse (age 8-11) sports  | 
| Katherine Kirkpatrick | 
Redcoats and Petticoats (age 8-11) family , historical , war  | 
| David Kirschner | 
The Pagemaster (age 9-12) authorship , fantasy  | 
| Anna Kirwan | 
Lady of Palenque: Flower of Bacal (age 9-12) in: The Royal Diaries Series princesses , letters/journal , historical  | 
| 
Victoria, May Blossom of Britannia (age 9-12) in: The Royal Diaries Series princesses , letters/journal , historical  | |
| Jim Kjelgaard | 
Big Red (age 9-12) growing up , nature , animals  | 
| 
Snow Dog (age 9-12) survival , adventure , animals  | |
| Suzy Kline | 
Herbie Jones (age 7-10) in: Herbie Jones Series realistic , school  | 
| 
What's the Matter With Herbie Jones? (age 7-10) in: Herbie Jones Series realistic , school  | |
| 
Horrible Harry and the Green Slime (age 7-10) in: Horrible Harry Series humor , friendship , school  | |
| 
Horrible Harry and the Christmas Surprise (age 7-10) in: Horrible Harry Series humor , friendship , school  | |
| 
Horrible Harry and the Dungeon (age 7-10) in: Horrible Harry Series humor , friendship , school  | |
| 
Horrible Harry and the Kickball Wedding (age 7-10) in: Horrible Harry Series humor , friendship , school  | |
| 
Horrible Harry in Room 2B (age 7-10) in: Horrible Harry Series humor , friendship , school  | |
| 
Horrible Harry's Secret (age 7-10) in: Horrible Harry Series humor , friendship , school  | |
| 
Horrible Harry and the Ant Invasion (age 7-10) in: Horrible Harry Series humor , friendship , school  | |
| 
Song Lee and the Hamster Hunt (age 7-10) in: Horrible Harry Series humor , friendship , school  | |
| 
Song Lee in Room 2B (age 7-10) in: Horrible Harry Series humor , friendship , school  | |
| 
Mary Marony, Mummy Girl (age 7-10) in: Mary Marony Series friendship , school  | |
| 
Mary Marony and the Chocolate Surprise (age 7-10) in: Mary Marony Series friendship , school  | |
| Kate Klise | 
Letters From Camp (age 8-11) mystery , humor , family , letters/journal  | 
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Regarding the Fountain (age 8-11) mystery , letters/journal , humor , school  | |
| 
Regarding the Sink: Where, Oh Where, Did Waters Go? (age 8-11) sequel to: Regarding the Fountain mystery , letters/journal , humor , school  | |
| 
Regarding the Trees: a Splintered Saga Rooted in Secrets (age 8-11) sequel to: Regarding the Fountain mystery , letters/journal , humor , school  | |
| 
Regarding the Bathrooms: a Privy to the Past (age 8-11) sequel to: Regarding the Fountain mystery , letters/journal , humor , school  | |
| 
Regarding the Bees: a Lesson, in Letters, on Honey, Dating, and Other Sticky Subjects (age 8-11) sequel to: Regarding the Fountain mystery , letters/journal , humor , school  | |
| 
Trial by (Jury) Journal (age 8-11) humor , mystery , letters/journal  | |
| Eric Knight | 
Lassie Come-Home (age 8-11) adventure , animals  | 
| Joa MacPhail Knight | 
Charlotte in Giverny (age 8-11) in: Charlotte in... Series the arts , letters/journal  | 
| Jackie French Koller | 
The Dragonling (age 7-10) fantasy , knights/castles/dragons  | 
| 
Mole and Shrew (age 7-10) in: Mole and Shrew Series friendship  | |
| 
A Dragon in the Family (age 7-10) fantasy , knights/castles/dragons  | |
| E. L. Konigsburg | 
Jennifer, Hecate, Macbeth, William, McKinley, and Me, Elizabeth (age 9-12) realistic , identity , friendship  | 
| 
The View From Saturday (age 8-11) realistic , identity , friendship , brilliant protagonist  | |
| 
From the Mixed-up Files of Mrs. Basil E. Frankweiler (age 9-12) realistic , the arts , mystery , adventure  | |
| 
About the B'nai Bagels (age 9-12) realistic , family , sports , growing up  | |
| Gordon Korman | 
No More Dead Dogs (age 10+) the arts , school , humor  | 
| 
Swindle (age 9-12) in: Swindle Series adventure , humor  | |
| 
One False Note (age 9-12) in: The 39 Clues historical , action , adventure , mystery  | |
| 
Shipwreck (age 8-11) sequel to: Island Series realistic , survival , adventure , action  | |
| 
Survival (age 8-11) sequel to: Island Series realistic , survival , adventure , action  | |
| 
Escape (age 8-11) sequel to: Island Series realistic , survival , adventure , action  | |
| Erik P. Kraft | 
Lenny and Mel (age 7-10) in: Lenny and Mel Series traditions , humor  | 
| Stephen Krensky | 
The Printer's Apprentice (age 10+) authorship , historical  | 
| 
The Dragon Circle (age 8-11) adventure , knights/castles/dragons , magic  | |
| 
The Wilder Summer (age 8-11) school , friendship  | |
| 
King Arthur (age 7-10) in: The Arthur Series school , friendship  | |
| Nancy Krulik | 
Any Way You Slice It (age 8-11) in: Katie Kazoo, Switcheroo Series humor , magic  | 
| 
Anyone But Me (age 8-11) in: Katie Kazoo, Switcheroo Series humor , magic  | |
| 
Bad Rap (age 8-11) in: Katie Kazoo, Switcheroo Series humor , magic  | |
| 
Be Nice to Mice! (age 8-11) in: Katie Kazoo, Switcheroo Series humor , magic  | |
| 
Camp Rules! (age 8-11) in: Katie Kazoo, Switcheroo Series humor , magic  | |
| 
Drat! You Copycat! (age 8-11) in: Katie Kazoo, Switcheroo Series humor , magic  | |
| 
Free the Worms! (age 8-11) in: Katie Kazoo, Switcheroo Series humor , magic  | |
| 
Friends for Never (age 8-11) in: Katie Kazoo, Switcheroo Series humor , magic  | |
| 
Girls Don't Have Cooties (age 8-11) in: Katie Kazoo, Switcheroo Series humor , magic  | |
| 
Gotcha! Gotcha Back! (age 8-11) in: Katie Kazoo, Switcheroo Series humor , magic  | |
| 
It's Snow Joke! (age 8-11) in: Katie Kazoo, Switcheroo Series humor , magic  | |
| Joseph Krumgold | 
...and Now Miguel (age 9-12) growing up  | 
| 
Onion John (age 9-12) family , friendship  | |
| Kathleen V. Kudlinski | 
Shannon: a Chinatown Adventure, San Francisco, 1880 (age 8-11) in: Girlhood Journeys Collection adventure , historical , family  | 
| Allen Kurzwell | 
Leon and the Champion Chip (age 8-11) school , humor , math/science/technology  | 
| Laura McGee Kvasnosky | 
One Lucky Summer (age 8-11) realistic , friendship , sports  |