Hannah Moskowitz is an American author known for her work in young adult and middle grade fiction. She wrote her first story about a kitten named Lilly on the run from cat hunters for a contest when she was seven years old. It was disqualified for violence. Her first published book, BREAK, was featured on the ALA's 2010 list of Popular Paperbacks for Young Adults. In 2013, GONE, GONE, GONE received a Stonewall Honor. Additionally, her 2015's novel, NOT OTHERWISE SPECIFIED, was named the YA Bisexual Book of the Year.

SICK KIDS IN LOVE was recognized as a Sydney Taylor Honoree, a Junior Library Guild Selection, and named one of the Best Books of the year by both Kirkus and Tablet Magazine. As of 2021, Moskowitz has published fourteen novels, three short stories, and three non-fiction essays. She lives in Maryland with several cats, none of whom are violent.