Cecil Castellucci is the author of books and graphic novels for young adults including Boy Proof, The Plain Janes, First Day on Earth, The Year of the Beasts, Tin Star, Stone in the Sky and the Eisner nominated Odd Duck. Her picture book, Grandma's Gloves, won the California Book Award Gold Medal. Her short stories have been published in Strange Horizons, YARN, Tor.com, and various anthologies including, Teeth, After, and Interfictions 2. She is the Children's Correspondence Coordinator for The Rumpus, a two time Macdowell Fellow and the founding YA Editor at The LA Review of Books.

In addition to writing books, she writes plays, makes movies, does performance pieces, and still occasionally rocks out. Born in New York City to French Canadian parents, she is a citizen of both America and Canada. Currently, she lives in Los Angeles.