Charlotte Sullivan is a Canadian actress. Her credits include Harriet the Spy (1996), Goosebumps (1996), The New Ghostwriter Mysteries (1997), How to Deal (2003), Fever Pitch (2005), MVP (2008), The Cry of the Owl (2009), Rookie Blue (2010), The Kennedys (2011), The Colony (2013), Chicago Fire (2016–2017), Mary Kills People (2017–2019), Caught (2018), Wynonna Earp (2021), Law & Order: Organized Crime (2021), and Pretty Hard Cases (2022).

Harriet the Spy is a 1996 American coming-of-age comedy film directed by Bronwen Hughes in her feature film directorial debut, and starring Michelle Trachtenberg in her major film acting debut. It co-stars Rosie O'Donnell, J. Smith-Cameron, Gregory Smith, and Vanessa Lee Chester. Based on the 1964 novel of the same name by Louise Fitzhugh, the film follows a sixth-grade student who aspires to become a writer and spy.