Jaane Tu... Ya Jaane Na (transl. Whether You Know Or Not) is a 2008 Indian Hindi-language coming-of-age romantic comedy film written and directed by Abbas Tyrewala and produced by Mansoor Khan and Aamir Khan under Aamir Khan Productions, with Ajay K. Bijli and Sanjeev K. Bijli of PVR Pictures acting as co-producers. Marking writer Tyrewala's full-fledged screenwriting and directorial debut, it also marks the debut of Aamir's nephew and lead actor Imran Khan with supporting actor Prateik Babbar, as well as the re-appearance of lead actress Genelia D'Souza and supporting actress Manjari Fadnis in Hindi cinema. The film's soundtrack, composed by A. R. Rahman, received high critical acclaim upon release and also was commercially successful.

Jaane Tu... Ya Jaane Na was released on 4 July 2008, and proved to be a major commercial success at the box office. It received widespread critical acclaim, with praise for its direction, story, screenplay, soundtrack, cinematography and performances of the cast. The film is titled after a song of the same name from the film Aa Gale Lag Jaa (1973). This song is sung by lead actor several times in the film.

At the 54th Filmfare Awards, Jaane Tu... Ya Jaane Na received 12 nominations, including Best Film, Best Supporting Actress (Pathak Shah) and Best Supporting Actor (Babbar), and won 4 awards, including Best Male Debut (Imran Khan) and Best Music Director (Rahman).