Elyse E. "Lisi" Harrison (née Gottlieb; born on July 29, 1970) is a Canadian novelist of young adult fiction, known for the three series The Clique, Alphas and Monster High.

After graduating high school, she went to McGill University as a film major, but transferred after two years to study writing at Emerson College in Boston, Massachusetts.

[4] Her experience at the network was the inspiration for her bestselling series The Clique, because it reminded her of middle school life.

After selling over 9 million copies in her "Clique" series, Harrison quit her MTV job in June 2004 and focused on her writing career.

Harrison's first adult series, The Dirty Book Club, was released on October 10, 2017.