Ratan Naval Tata is an Indian industrialist and the former chairman of the Tata Group, one of India's largest and oldest conglomerates. Born on December 28, 1937, he played a crucial role in expanding the group's operations and diversifying its portfolio, which includes sectors like steel, automobiles, and information technology. Under his leadership from 1991 to 2012, Tata Group launched several successful initiatives, including the introduction of the Tata Nano, the world's cheapest car. Ratan Tata is also known for his philanthropic efforts, supporting education, healthcare, and rural development through the Tata Trusts.