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.

Michelle Christine Trachtenberg is an American actress. Trachtenberg began her career at age three, appearing in a number of commercials, films, and television series as a child. Her starring role on the Nickelodeon television series The Adventures of Pete & Pete (1994–1996) as Nona Mecklenberg was her first credited role. She starred in the Nickelodeon Movies comedy film Harriet the Spy (1996) as the film's eponymous character and in the CBS sitcom Meego (1997) as Maggie, for both of which she won Young Artist Awards.