On the basis of ownership industries are classified into four categories:
(1) Public Sector Industries -These industries are owned and managed by government agencies. Example - Chittaranjan Locomotive Works, The Integral Coach Factory, Perambur, Iron and steel Plants at Bhilai and Durgapur.
(2) Private Sector Industries -These industries are owned and managed by individuals or group of individuals. Example- Tata Iron and Steel Company, Reliance Industries, Aditya Birla Group of Industries
(3) Joint Sector Industries-These industries are owned and managed jointly by private firms and government agencies. Example - Oil India Limited, Gujarat Alkalies
(4) Cooperative Sector Industries- These industries are owned and managed by a group of people who form their own co-operative society. They are generally producers of raw material. Example - Dairy cooperatives, Handloom industry.