Wendy Mass is an author of young adult novels and children's books. She was born on April 22, 1967.

Her 2003 novel, A Mango-Shaped Space, won the American Library Association (ALA) Schneider Family Book Award for Middle School in 2004. Her other notable works include: 11 Birthdays, A Mango-Shaped Space, and Every Soul a Star. Mass's novel Jeremy Fink and the Meaning of Life was adapted into a feature film in 2011.

Wendy Mass is the author of thirty novels for young people, including A Mango-Shaped Space, which was awarded the Schneider Family Book Award, Leap Day, the Twice Upon a Time fairy tale series, Jeremy Fink and the Meaning of Life, Heaven Looks a Lot Like the Mall, and the Willow Falls, Space Taxi, and Candymakers series.

Wendy wrote the storyline for an episode of the television show Monk, entitled "Mr. Monk Goes to the Theatre," which aired during the show's second season. She tells people her hobbies are hiking and photography, but really they're collecting candy bar wrappers and searching for buried treasure with her metal detector. Wendy lives with her family in New Jersey.