Series:
* My Weird School (over 50 books): Hilarious stories about a wacky school and the students who attend it.
* The Genius Files (over 20 books): Adventures of a group of genius kids who solve mysteries and save the world.
* The Baseball Card Adventures (15 books): A boy travels through time using baseball cards to meet famous baseball players.
* The Million Dollar Throw (8 books): A boy finds a million-dollar baseball, leading to hilarious situations.
* The Kidnapped King (5 books): A medieval adventure with a modern twist, where a boy is accidentally transported back in time.
* The Mercy Watson (4 books): A pig named Mercy Watson gets into all sorts of trouble.
* The King of Kindergarten (4 books): A boy named Joe is the self-proclaimed king of kindergarten, getting into mischief along the way.
Standalone Titles:
* The Wacky World of Words (over 20 books): Educational books exploring the English language through fun and engaging stories.
* The Boy Who Saved Baseball
* The Boy Who Saved Christmas
* The Great American Road Trip
Other:
* Ghost of the Babe (a graphic novel)
* The Baseball Card Adventures: The Official Field Guide
Dan Gutman's books are known for their humor, adventure, and engaging storylines, making them popular among children and young readers.