Dragon
- For the animated television series based on the books, see Dragon .
- A Friend for Dragon (1991)
- Dragon Gets By (1991)
- Dragon's Merry Christmas (1991)
- Dragon's Fat Cat (1992)
- Dragon's Halloween (1993)
Creature Feature
- Dogzilla (1993)
- Kat Kong (1993)
Kat Kong is a spoof of the story of King Kong, incorporating a cat and mice characters. The book combines photography with paintings, with the story of revealing how the characters Dr. Varmint and Rosie Rodent capture Kat Kong and bring him back to Mousopolis. Dogzilla is also a spoof of the story Godzilla.
Dumb Bunnies
- The Dumb Bunnies (1994)
- The Dumb Bunnies' Easter (1995)
- Make Way for Dumb Bunnies (1996)
- The Dumb Bunnies Go to the Zoo (1997)
Pilkey authored the Dumb Bunnies books under the pseudonym Sue Denim. He has stated that the series was influenced by The Stupids.
Captain Underpants
- The Adventures of Captain Underpants (1997)
- Captain Underpants and the Attack of the Talking Toilets (1999)
- Invasion of the Incredibly Naughty Cafeteria Ladies from Outer Space (1999)
- Perilous Plot of Professor Poopypants (2000)
- Wrath of the Wicked Wedgie Woman (2001)
- The Captain Underpants Extra Crunchy Book O' Fun (2001)
- The Adventures of Super Diaper Baby (2002)
- Big, Bad Battle of the Bionic Booger Boy (2003)
- The All New Extra Crunchy Captain Underpants Book O' Fun 2 (2005)
- Preposterous Plight of the Purple Potty People (2006)
- The Adventures of Ook and Gluk: Kung-Fu Cavemen from the Future (2010)
Ricky Ricotta
- Ricky Ricotta's Mighty Robot (2000)
- Ricky Ricotta's Mighty Robot vs. the Mutant Mosquitos from Mercury (2000)
- Ricky Ricotta's Mighty Robot vs. the Voodoo Vultures from Venus (2001)
- Ricky Ricotta's Mighty Robot vs. the Mecha Monkeys from Mars (2002)
- Ricky Ricotta's Mighty Robot vs. the Jurassic Jackrabbits from Jupiter (2002)
- Ricky Ricotta's Mighty Robot vs. the Stupid Stinkbugs from Saturn (2003)
- Ricky Ricotta's Mighty Robot vs. the Uranium Unicorns from Uranus (2005)
- Ricky Ricotta's Mighty Robot Astro-Activity Book o' Fun (2006)
Big Dog & Little Dog
- Big Dog and Little Dog (1997)
- Big Dog and Little Dog Going for a Walk (1997)
- Big Dog and Little Dog Getting in Trouble (1997)
- Big Dog and Little Dog Wearing Sweaters (1998)
- Big Dog and Little Dog Making a Mistake (1999)
- The Complete Adventures of Big Dog and Little Dog (1999)
Other Books:
- When Cats Dream
- Moonglow Roll-O-Rama
- The Hallo-Wiener
- Twas the Night Before Thanksgiving
- God Bless the Gargoyles
- Dog Breath!: The Horrible Trouble With Hally Tosis
- Silly Gooses
- Julius
- The Paper Boy
- World War Won