- The very hungry caterpillar's very first encyclopedia
- The Kingfisher space encyclopedia, Dr. Mike Goldsmith
- Children's encyclopedia of sharks, Claudia Martin
- American history, a visual encyclopedia, by David C. King
- Our world in numbers, an encyclopedia of fantastic facts, written by Clive Gifford
- The illustrated encyclopedia of the elements, the powers, uses, and histories of every atom in the universe, Lisa Congdon
- First Earth encyclopedia
- Encyclopedia of insects, an illustrated guide to natures most weird and wonderful bugs, written by Jules Howard ; illustrated by Miranda Zimmerman
- From famine to fast food, nutrition, diet, and concepts of health around the world, Ken Albala, editor
- Enciclopedia Britannica para niños, traducción de Francesc Reyes Camps ; editado por Christopher Lloyd ; prefacio de J.E. Luebering, Director editorial, Encyclopædia Britannica
- Crustaceans, by Emma Carlson Berne ; consultant Jackie Gai, DVM, Wildlife Veterinarian
- Marvel encyclopedia, Tom DeFalco, Peter Sanderson, Tom Brevoort, Michael Teitelbaum, Daniel Wallace, Andrew Darling, Matt Forbeck, Alan Cowsill, Adam Bray ; foreword by Chris Claremont ; with an introduction by Stan Lee
- Reptiles, by Janet Riehecky ; consultant Jackie Gai, DVM, Wildlife Veterinarian
- The video game encyclopedia, by Arnold Ringstad
- Rodale's ultimate encyclopedia of organic gardening, the indispensable green resource for every gardener, edited by Fern Marshall Bradley, Barbara W. Ellis, and Ellen Phillips with Deborah L. Martin
- The Chicago food encyclopedia, edited by Carol Mighton Haddix, Bruce Kraig, and Colleen Taylor Sen ; foreword by Russell Lewis
- DC ultimate character guide, written by Melanie Scott
- Marvel Studios character encyclopedia, written by Adam Bray
- The space encyclopedia, by Gail Radley
- The illustrated encyclopedia of STEAM words, an A to Z of 100 terms kids need to know!, written by Jenny Jacoby ; illustrated by Vicky Barker
- Kingfisher animal encyclopedia, David Burnie ; consultant (2018) : Camilla de la Bédoyère
- American history, a visual encyclopedia, by David C. King
- LEGO DC character encyclopedia, written by Elizabeth Dowsett, Simon Hugo, and Cavan Scott