Steel Authority of India Limited (SAIL) is the largest steel maker in India. It is a public sector undertaking wholly owned by Government of India and acts like an operating company. Incorporated on January 24, 1973, SAIL has more than 131,910 employees. The company's current chairman is S.K. Roongta. With an annual production of 13.5 million metric tons, SAIL is the 16th largest steel producer in the world.

Major plants owned by SAIL are located at Bhilai, Bokaro, Durgapur, Rourkela, Burnpur (near Asansol) and Salem. SAIL is a public sector company, owned and operated by the Government of India. According to a recent survey, SAIL is one of India's fastest growing Public Sector Units.