Early life and background
Khan was born on 14 March 1965 in
Tahir Hussain, a film producer, and Zeenat Hussain.
 Several of his relatives were members of the Hindi film industry, including his late paternal uncle, the producer-director
 He is related to the Indian philosopher
Abul Kalam Azad through his grandmother.
 Khan is the eldest of four siblings; he has a brother, the actor
Faisal Khan, and two sisters, Farhat and
Nikhat Khan (married to Santosh Hegde).
 His nephew,
Imran Khan, is a contemporary Hindi film actor.
As a child actor, Khan appeared on screen in two minor roles. At the age of eight, he appeared in a highly popular song in the Nasir Hussain-directed film
Yaadon Ki Baaraat (1973),
 which was the first
 The following year, he portrayed the younger version of
Mahendra Sandhu's character in his father's production
 Khan attended J.B. Petit School for his pre-primary education, later switching to
St. Anne's High School, Bandra till the eighth grade, and completed his ninth and tenth grade at the
Bombay Scottish School, Mahim.
 He played tennis in state level championships, and has professed being "much more into sports than studies".
 He completed his twelfth grade from Mumbai's
Narsee Monjee College.
 Khan described his childhood as "tough" due to the financial problems faced by his father, whose film productions were mostly unsuccessful. He said, "There would be at least 30 calls a day from creditors calling for their money." He was always at risk of being expelled from school for non-payment of fees.
At the age of sixteen, Khan was involved in the experimental process of making a 40-minute silent film, Paranoia, which was directed by his school friend
 The film was funded by the filmmaker
Shriram Lagoo, an acquaintance of Bhattacharya, who provided them with a few thousand rupees.
 Khan's parents did not want him to make films, wishing that he would instead pursue a "steady" career as an engineer or doctor.
 For that reason, the shooting schedule of Paranoia was a clandestine one.
 In the film, he played the lead role alongside actors
Neena Gupta and
Victor Banerjee, while simultaneously assisting Bhattacharya.
 He said that the experience of working on it encouraged him to pursue a career in film.
Khan subsequently joined a theatre group called Avantar, where he performed backstage activities for over a year. He made his stage debut with a small role in the company's
Gujarati play, Kesar Bina, at
 He went on to two of their Hindi plays, and one English play, which was titled Clearing House.
 After completing high school, Khan decided to discontinue studying, choosing instead to work as an
assistant director to Nasir Hussain on the Hindi films
Manzil Manzil (1984) and