M
- Amy MacDonald (born 1951) - Little Beaver and the Echo, Rachel Fister's Blister
- Betty MacDonald (1908–1958) - The Mrs. Piggle-Wiggle series
- George Macdonald (1824–1905) - At the Back of the North Wind, The Princess and the Goblin
- Reginald James MacGregor- The Young Detectives
- D. J. MacHale - The Pendragon Adventure
- Sandra Magsamen - The Gift
- Margaret Mahy - The Haunting, The Changeover, Maddigan's Fantasia
- Hector Malot (1830–1907) - Nobody's Boy (Sans Famille)
- Ruth Manning-Sanders (1888–1988) - A Book of Dragons, and other anthologies of fairy tales from around the world
- Frederick Marryat (1792–1848) - The Children of the New Forest
- John Marsden - The Tomorrow series
- James (1942–1992) & Edward Marshall - Fox in Love, Fox and His Friends, Fox on Wheels
- Ann M. Martin - The Babysitters Club series
- J. P. Martin (1880–1966) - The Uncle series
- John Masefield (1878–1967) - The Midnight Folk, The Box of Delights
- Cotton Mather (1663–1728) - A Token for the Children of New England
- André Maurois (1885–1967) - Fattypuffs and Thinifers (Patapoufs et Filifers)
- Mercer Mayer - The Little Critter and Little Monster series
- William Mayne (1928–2010) - A Swarm in May, A Grass Rope, Earthfasts, Low Tide
- Geraldine McCaughrean - Peter Pan in Scarlet, A Pack of Lies
- Robert McCloskey (1914–2003) - Make Way for Ducklings, Time of Wonder, Blueberries for Sal
- Eloise McGraw (1915–2000) - The Golden Goblet, The Moorchild, The Rundelstone of Oz
- Lauren Lynn McGraw - Merry Go Round in Oz
- Sophie McKenzie - Girl, Missing
- Robin McKinley - The Hero and the Crown, The Blue Sword, Spindle's End
- Colin McNaughton - Captain Abdul's Pirate School
- Geoffrey McSkimming - The Cairo Jim series
- L. T. Meade (1854–1914) - A World of Girls
- Michael Mei - The Goofy Gourmet®: Let's Cook Today!, The Goofy Gourmet®: A Perfect Picnic!
- Milton Meltzer - The Black Americans, The American Revolutionaries, Mark Twain Himself
- Richard Michelson - Animals That Ought to Be: Poems about Imaginary Pets, Across the Alley
- Michael Milburn - If I Was a Turtle
- Katherine Milhous (1894–1977) - The Egg Tree
- A. A. Milne (1882–1956) - Winnie-the-Pooh, The House at Pooh Corner, When We Were Very Young
- Olive Beaupre Miller (1883–1968) - My Book House series
- Elyne Mitchell (1913–2002) - The Silver Brumby series
- Walter Moers - The 13½ Lives of Captain Bluebear
- Chris Monroe - Monkey with a Tool Belt, Sneaky Sheep
- Lucy Maud Montgomery (1874–1942) - Anne of Green Gables, Emily of New Moon
- Clement Clarke Moore (1779–1863) - A Visit From St. Nicholas
- John A. Moroso (1874–1957) - Nobody's Buddy
- Michael Morpurgo - Why the Whales Came, The Wreck of the Zanzibar, Private Peaceful
- Farley Mowat - Lost in the Barrens, Owls in the Family
- Robert Muchamore - CHERUB Series, Henderson's Boys Series
- Brandon Mull - Fablehaven series
- Caryl Cude Mullin - A Riddle of Roses
- Robert Munsch - Love You Forever, The Paper Bag Princess
- Jill Murphy - The Worst Witch, The Last Noo-Noo
- Andrew Murray - Ghost Rescue
- Susan Musgrave - Gullband, Dreams Are More Real Than Bathtubs
Read more about this topic: List Of Children's Literature Authors