When adjusted for inflation, its total nett gross in India is ₹1.21 billion (US$18 million).The following year, Kal Ho Naa Ho won two National Film Awards and eight Filmfare Awards.The film was paid homage by the German Embassy in India by releasing a short 8 minute video named Lebe jetzt. The film was a commercial success and emerged as the second highest grossing film domestically, and the highest grossing film in overseas and worldwide that year. Kal Ho Naa Ho was declared a 'Blockbuster' in India and an 'All Time Blockbuster' overseas by Box Office India. Additionally, it was screened at the Valenciennes, Era New Horizons, Marrakech International and Helsinki Film Festival.

Made on a budget of ₹280 million, Kal Ho Naa Ho released on 28 November 2003 to positive critical reviews.

Kal Ho Naa Ho was promoted with the tag-line - A Story of a Lifetime. The film narrates the story of a pessimistic uptight student, Naina Kapur, who falls in love with her neighbour, Aman Mathur, a terminally ill patient who tries to play matchmaker for Naina and her friend, Rohit Patel. It also features Lilette Dubey, Reema Lagoo, Sushma Seth and Delnaaz Paul in supporting roles. The film features, Jaya Bachchan as Jennifer 'Jenny' Kapur, Shahrukh Khan as Aman Mathur, Saif Ali Khan as Rohit Patel, and Preity Zinta as Naina Catherine Kapur. The music of the film was composed by Shankar-Ehsaan-Loy, with lyrics written by Javed Akhtar. The film was written by Niranjan Iyengar and Karan Johar and produced by Yash Johar and Karan Johar under the Dharma Productions banner. Kal Ho Naa Ho (English: There May or May Not Be a Tomorrow), abbreviated as KHNH, is a 2003 Indian romantic drama, directed by debutante director Nikhil Advani.

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