Diary of a Teenage Girl (disambiguation)

Diary of a Teenage Girl is a series of Christian young adult novels by Melody Carlson.

It may also refer to:

• The Diary of a Teenage Girl: An Account in Words and Pictures, a 2002 graphic novel by Phoebe Gloeckner
  • The Diary of a Teenage Girl, a 2015 American comedy-drama film directed by Marielle Heller, based on the novel
  • The Diary of a Teenage Girl (play), a 2010 play directed by Sarah Cameron Sunde and Rachel Eckerling, based on the novel