Kuch Kuch Hota Hai is a Hindi romantic comedy film, released in India and the United Kingdom on 16 October 1998. The film was written and directed by the debuting Karan Johar and stars the popular on-screen pair of Shahrukh Khan and Kajol in their fourth movie together. Rani Mukerji features in a supporting role, while Salman Khan has an extended cameo appearance.

The film was extremely successful both in India and abroad, winning major awards in all categories including the Best Film award at the 44th Annual Filmfare Awards,  Lux Zee Cine Awards, Sansui Viewers\ Choice Awards, Aashirwad Awards, Bollywood Movie Awards and the National Film Awards.

Kuch Kuch Hota Hai was the highest grossing Indian movie of 1998. It made 45 crore (US$8.98 million) in India, and Box Office India declared it an all time blockbuster. It went on to make a lifetime gross of 103 crore (US$20.55 million). Adjusted for inflation, the movie has grossed 182 crore (US$36.31 million).