Authors & Illustrators
- Annie Silvestro
- Remy Simard
- Clea Simon
- Fraser Simpson
- Kate S. Simpson
- Liz Simpson
- Upton Sinclair
- Simran Jeet Singh
- Stephen Singular
- Claire Sipi
- Sid Sivakumar
- Yeva Skalietska
- Lenore Skomal
- Paul Sloane
- Jordan Slocum
- Jamie Smart
- Martin Smatana
- Nicola Smee
- Paul Smethurst
- Ela Smietanka
- Jane Smiley
- Clinton Smith
- Erin Smith
- Jessie Willcox Smith
- Kelly Smith
- Kim Smith
- Rodney Smith
- Stan Smith
- Rick Smolan
- Christopher A. Snyder
- Josep Miquel Sobrer
- Valerie Sokolova
- Fermin Solis
- Kelly Solloway
- Justine Solomons-Moat
- Alfredo Luis Somoza
- Sandie Sonke
- Sophocles
- Henri Sorensen
- Amarilli Soriente
- Enrica Soroldon
- David Souden
- Anna Southgate
- Josephine Southon
- Roberta Spagnolo
- Alice Sparkly Kat
- SparkNotes
- Giles Sparrow
- Anthony Spears
- Richard Spellenberg
- Ian Speller
- Lewis Spence
- Nick Spender
- Louise Spilsbury
- Richard Spilsbury
- Cala Spinner
- Helga Spitz
- Rebecca Spooner
- Eric Sprankle
- Johanna Spyri
- Union Square & Co.
- Union Square Kids
- Marisa St Clair
- St. Francis of Assisi
- Greg Stadler
- Jonathan Standing
- Tracy Stanley
- White Star
- Milan Starý
- Judy Stead
- Hamish Steele
- Mary Steenburgen
- Robert Steimle
- John Steinbeck
- Maddalena Stendardi
- Fred Stenson
- Mark Stephens
- Lisa Sterle
- Meagan Stevenson
- Robert Louis Stevenson
- Amber Stewart
- David Stewart
- Jennifer J. Stewart
- Melissa Stewart
- Whitney Stewart
- Alexander Stilwell
- Jasmine A. Stirling
- Damian Stocking
- Bram Stoker
- Annaliese Stoney