Maureen Johnson (born February 16, 1973) is an American author of young adult fiction. Her published novels include series leading titles such as 13 Little Blue Envelopes, The Name of the Star, Truly Devious, and Suite Scarlett. Among Johnson's works are collaborative efforts such as Let It Snow, a holiday romance novel of interwoven stories co-written with John Green and Lauren Myracle, and a series of novellas found in New York Times bestselling anthologies The Bane Chronicles, Tales from the Shadowhunter Academy, and Ghosts of the Shadow Market.

Johnson is the #1 New York Times and USA Today bestselling author of several YA novels. Her work has appeared in publications such as The New York Times, Buzzfeed, and The Guardian. She has also served as a scriptwriter for EA Games. Johnson has an MFA in Writing from Columbia University and lives in New York City.

Johnson was born in Philadelphia, Pennsylvania, and was an only child, a fact that taught her how to play Candyland by herself. Declaring her intention to become a writer at a young age, she graduated from the University of Delaware, home of the Fighting Blue Hens, and went on to study theatrical dramaturgy and writing at Columbia University School of the Arts. Johnson's diverse career path includes working in a haunted house theme restaurant, being a fake employee for a company, and working on a show in Las Vegas with live tigers and malfunctioning smoke machines.