Lakshmi Niwas Mittal was born on June 15, 1950 at Sadulpur, in Churu district of Rajasthan, in a poor family. The extended family of 20 lived on bare concrete floors, slept on rope beds and cooked on an open fire in the brickyard in a house built by his grandfather. Laxmi Mittal belongs to Marwari Aggarwal caste and his grandfather worked for the Tarachand Ghanshyam Das firm, one of the leading Marwari industrial firms of pre-independence India.