The Adventures of Super Diaper Baby is a children's graphic novel by bestselling author and illustrator Dav Pilkey, creator of Dog Man and Captain Underpants. Originally published in 2002, this full-color edition features updated spelling and grammar along with bonus content including How 2 Draws and a behind-the-scenes look at the creation process with pages from Dav Pilkey's sketchbook.

Super Diaper Baby is a baby named Billy who gains special superpowers along with his trusty companion, Diaper Dog. Together, the diaper-wearing dynamo duo must defeat their archenemy, Deputy Dangerous, who wants to steal Billy's powers and take over the planet. The story features a special appearance by Captain Underpants.

Written and illustrated in the style of how the in-universe characters George Beard and Harold Hutchins would have created the story, this graphic novel is a spin-off from the Captain Underpants series. It debuted at #6 on the USA Today bestseller list and was also a New York Times bestseller. Published by Scholastic, ISBN 9781338687859.