IISCOs history began with the setting of India’s first blast furnace at Kulti-Burnpur in 1870 and production began in 1874. Hence, IISCO is the earliest Iron and Steel Company in India.

Tata Iron and Steel Company, established in 1907 by Dorabji Tata, and is, therefore, not the earliest Iron and Steel Company in India.

Visvesvaraiya Iron and Steel Works, which started operations with the name Mysore Iron and Steel Works in Karnataka, was founded in the year 1923.