Public Sector Undertaking (PSU)
A government owned enterprise, government owned corporation, statutory corporation and a nationalised company in India is called a Public Sector Undertaking (PSU) or a Public Sector Enterprise. Public Sector Undertaking (PSUs) companies are wholly or partly owned by the Government of India or one of the many state or territorial governments or both together in parts.
There are following types of Public Sector Undertaking (PSU) in India
Maharatans Companies
Navaratans Companies
Other Public Sector Companies
List of Maharatans Public Sector Companies
| Name of Comapany | Headquater | Established on |
| Bharat Heavy Electricals Limited (BHEL) | New Delhi | 1964 |
| Coal India Limited (CIL) | Kolkata | 1975 |
| Gas (India) Limited (GAIL) | New Delhi | 1984 |
| Indian Oil Corporation Limited (IOCL) | New Delhi | 1959 |
| NTPC Limited | New Delhi | 1975 |
| Oil and Natural Gas Corporation Limited (ONGC) | New Delhi | 1956 |
| Steel Authority of India Limited (SAIL) | New Delhi | 1954 |
| Bharat Petroleum Corporation Limited (BPCL) | Mumbai | 1952 |
List of Navaratans Public Sector Companies
| Name of Company | Headquater | Established on |
| Bharat Electronics Limited | Bengaluru | 1954 |
| Container Corporation of India Ltd. (CONCOR) | New Delhi | 1989 |
| Engineers India Limited (EIL) | New Delhi | 1965 |
| Hindustan Aeronautics Limited (HAL) | Bengaluru | 1940 |
| Hindustan Petroleum Corporation Limited (HPCL) | Mumbai | 1974 |
| Mahanagar Telephone Nigam Limited (MTNL) | New Delhi | 1986 |
| National Aluminium Company Limited (NALCO) | Bhubaneswar | 1981 |
| National Buildings Construction Corporation Limited (NBCC) | New Delhi | 1960 |
| NMDC (National Mineral Development Corporation) Limited | Hyderabad | 1958 |
| NLC India Limited | Neyveli, TN | 1956 |
Other Public Sector Companies
| Name of Company | Headquater | Established on |
| Airports Authority of India | New Delhi | 1995 |
| Bharat Coking Coal Limited (BCCL) | Dhanbad | 1972 |
| Bharat Earth Movers Limited | Bengaluru | 1964 |
| Bharat Sanchar Nigam Limited | New Delhi | 2000 |
| Central Warehousing Corporation | New Delhi | 1957 |
| Central Coalfields Limited (CCL) | Ranchi | 1975 |
| Garden Reach Shipbuilders & Engineers Ltd | Kolkata | 1884 |
| Hindustan Copper Ltd. | Kolkata | 1967 |
| Housing and Urban Development Corporation Limited (HUDCO) | New Delhi | 1970 |
| Indian Rare Earths Limited (IREL) | Mumbai | 1950 |
| Ircon International Limited (IRCON) | New Delhi | 1976 |
| RailTel Corporation of India Ltd. | Gurugram | 2000 |
| Rashtriya Chemicals & Fertilizers Ltd. (RCF) | Mumbai | 1978 |
| Antrix Corporation Limited | Bengaluru | 1992 |
| Indian Space Research Organisation (ISRO) | Bengaluru | 1969 |
| Bharat Pumps & Compressors Limited (BPC) | Prayagraj | 1970 |
| MMTC Ltd., Metals and Minerals Trading Corporation of India | New Delhi | 1963 |
| National Fertilizers Limited (NFL) | Noida | 1974 |