- Lucinda Bruce-Gardyne
- Lucinda Gray
- Lucinda Riley
- Lucinda Riley, Harry Whittaker
- Lucinda Roy
- Lucky Platt
- Lucretia Grindle
- Lucy Carver
- Lucy Cousins
- Lucy Diamond
- Lucy Eldridge
- Lucy Fleming
- Lucy Holland
- Lucy Hounsom
- Lucy Inglis
- Lucy Ives
- Lucy Jackson
- Lucy Jane Wood
- Lucy Juárez
- Lucy Knisley
- Lucy Lehane
- Lucy Maud Montgomery
- Lucy Rose
- Lucy Rowland
- Lucy Ruth Cummins
- Lucy Treloar
- Lucy-Anne Holmes
- Ludmila Ulitskaya
- Lui Sit
- Luis O. Ramos
- Luis O. Ramos Jr
- Luis O. Ramos Jr.
- Luisa Leal
- Luiz Alfredo Garcia-Roza
- Lukas Thelin
- Luke Alfred
- Luke Burgis
- Luke Eidenschink
- Luke Flowers
- Luke Hines
- Luke Johnson
- Luke Kennard
- Luke Mancuso
- Luke Zocchi
- Lulu Taylor
- Luna Valentine
- Luvvie Ajayi
- Lyana Blount
- Lydia Albano
- Lydia Corry
- Lydia Kang
- Lydia M. Sigwarth
- Lydia Monks
- Lydia Nichols
- Lydia Sharp
- Lyn Miller-Lachmann
- Lynda Barry
- Lynda Cohen Loigman
- Lynda Lopez
- Lynda V. Mapes
- Lyndall Clipstone
- Lyndsay Rush
- Lynette Rice
- Lynn Brunelle
- Lynn Freed
- Lynn Scurfield
- Lynne Everatt
- Lynne Matson
- Lynne Vincent McCarthy
- Lynnie Popsicle
- M. A. Larson
- M. E. Thomas
- M. G. Leonard
- M. J. Hearle
- M. J. McGrath
- M. L. Marroquin
- M. R. James
- M. Sapolsky
- M. Sapolsky, Robert
- M. Sarah Klise
- M. Sweeney
- M. T. Anderson
- M. T. Edvardsson
- M.E. Corey
- M.J. Beasi
- M.J. Rose
- M.J. Rose and Fiona Davis
- M.R. Fournet
- Mabel Lucie Attwell
- Maberry, Jonathan
- Mac Rogers and Nat Cassidy
- Mac Rogers,Nat Cassidy
- Macken Murphy
- MacKenzie Haley
- Macmillan
- Macmillan Children’s Books
- Macmillan Collector’s Library
- Macmillan Publishers Ltd
- Macquarie Dictionary
- Mad Rupert
