Kapoor was born into a Punjabi family on 26 June 1985 in Bombay, Maharashtra to the Hindi film producer, Boney Kapoor and the entrepreneur Mona Shourie Kapoor. He is the grandson of filmmaker Surinder Kapoor. He is the nephew of actors Anil Kapoor, Sanjay Kapoor and producer Sandeep Marwah, and the first-cousin of actress Sonam Kapoor, actors Mohit Marwah, Harshvardhan Kapoor and producer Rhea Kapoor. He has a younger sister, Anshula Kapoor. The actress Sridevi was his stepmother, and he also has two half-sisters, Khushi and Janhvi Kapoor. When asked in an interview about his father's second marriage, Kapoor said: "When we were kids, it was difficult. But what can you do? How long will you complain? You have to accept what is, take it on your chin, and move on. " Arjun also said that "We don't really meet and spend time together so it doesn't really exist," His mother died in 2012.