Ambani was born on 19 April 1957 in the family of Dhirubhai Ambani and Kokilaben Ambani. He has a brother Anil and two sisters Salgaoncar and Nina Kothari. The residence of his family was in Mumbai. He studied at Hill Grange High School on Peddar Road, Mumbai. Then he entered the University of Bombay and received BA degree in Chemical Engineering. Later enrolled for an MBA from Stanford University but droped out to help his father in building the PFY plant.