This list compiles public sector organizations based in Kolkata, predominantly large enterprises. These entities primarily operate within the mining, banking, and utilities sectors. Notable organizations include Coal India Limited, a state-owned coal mining corporation; UCO Bank, a commercial bank providing financial services; Balmer Lawrie & Co. Ltd., a diversified conglomerate; and The West Bengal Power Development Corporation Limited, a state-owned power generation company.
The data shows a strong concentration of these large public sector organizations in Kolkata, covering essential services and industries. The presence of multiple banking institutions like Allahabad Bank and United bank of India, alongside several utilities such as West Bengal State Electricity Distribution Company Limited, indicates a focus on foundational economic activities.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Coal India Limitedcoalindia.nic.in
A state-owned coal mining corporate in India, leading in production and supply to meet the country's energy needs efficiently and competitively |
8,152 | |||
| 2 |
UCO Bankucobank.com
A commercial bank founded in 1943, providing financial services in India and internationally, with a focus on foreign exchange business |
6,916 | |||
| 3 |
Allahabad Bankallahabadbank.in
A nationalized bank headquartered in Kolkata, India, founded in 1865 in Allahabad The oldest joint stock bank in India |
4,906 | |||
| 4 |
Coal India Limitedcoalindia.in
A leading state-owned coal mining corporation in India with the largest coal production in the world and diverse subsidiary operations |
2,498 | |||
| 5 |
UCO Bank - A Government of India Owned Public Sector Bankucobank.com
A major government-owned commercial bank in India with a countrywide network of service units, specializing in financial participation across various sectors |
2,194 | |||
| 6 |
Balmer Lawrie & Co. Ltd.balmerlawrie.com
A diversified conglomerate with a 150-year history, specializing in logistics, manufacturing steel barrels, greases & lubricants, travel services, and community development projects |
2,071 | |||
| 7 |
Bridge and Roof Company (India) Limitedbridgeroof.co.in
A multi-disciplinary engineering and construction organization with extensive experience serving major project implementation authorities in India, with high expertise and in-house resources |
1,989 | |||
| 8 |
Damodar Valley Corporationdvc.gov.in
A multipurpose integrated river valley project focusing on flood control, irrigation, water supply, navigation, energy generation, afforestation, and public well-being in the region |
1,539 | |||
| 9 |
The West Bengal Power Development Corporation Limited (WBPDCL)wbpdcl.co.in
A state-owned power generation company in West Bengal, India, meeting 60% of state's power demands with a focus on quality, efficiency, and eco-friendly operations |
1,279 | |||
| 10 |
Indian Institute of Management, Calcuttaiimcal.ac.in
An autonomous institute offering post-graduate studies and research in management, with a vision to become a global center of excellence |
862 | |||
| 11 |
Coal India Limitedcoalindia.in
A state-owned coal mining corporation in India, CIL is the largest coal producer globally with multiple subsidiaries and training institutes |
836 | |||
| 12 |
West Bengal State Electricity Distribution Company Limitedwbsedcl.in
A Vidyut Bhavan-based organization in Kolkata, India, responsible for distributing electricity in West Bengal State |
705 | |||
| 13 |
West Bengal State Electricity Transmission Company Limited (WBSETCL)wbsetcl.in
A government enterprise in West Bengal established in 2007, responsible for transmitting power through substations of various voltage levels and frequently awarded in power sector |
691 | |||
| 14 |
Kolkata Policeonlinecareer360.com
A police force responsible for policing the metropolitan area of Kolkata, India, operating under the Calcutta Police Act |
656 | |||
| 15 | 
United bank of Indiaonlinecareer360.in
Indian government-owned financial services company with headquarters in Kolkata, offering banking services through 35 regional offices and 2005 branches throughout India |
647 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
University of Calcuttacaluniv.ac.in
A prestigious public state university in Kolkata, India, established in 1857 Known for its multidisciplinary approach and notable alumni including Nobel laureates |
614 | |||
| 17 |
Kolkata Port Trustsmp.smportkolkata.in
They are a transportation organization located in Kolkata, West Bengal, India, specializing in port operations and logistics services |
612 | |||
| 18 |
West Bengal Agwbagroindustries.com
A corporation in West Bengal, overseen by a government-appointed Board of Directors, operates district offices with engineers, professionals, and trained personnel |
600 | |||
| 19 |
Garden Reach Shipbuilders & Engineers Ltd.grse.in
A leading Indian warship building company under Ministry of Defence, specializing in building warships, platforms, engines, and engineering activities since 1884 |
591 | |||
| 20 |
NRS Medical College, Kolkatanrsmc.edu.in
A top medical teaching institution and public hospital in West Bengal, located in Kolkata, India, providing quality healthcare services and education |
578 | |||
| 21 |
Hindustan Copper Limitedhindustancopper.com
A vertically integrated copper producer involved in mining, beneficiation, smelting, refining, and casting copper into saleable products across multiple states in India |
533 | |||
| 22 |
Indian Statistical Institute, Kolkataisical.ac.in
An academic institute of national importance focused on statistics, established in India in 1931 by Prasanta Chandra Mahalanobis |
530 | |||
| 23 |
West Bengal Board of Secondary Education (WBBSE)wbbse.wb.gov.in
Autonomous examining authority for Standard 10 examinations in West Bengal, India, established through the West Bengal Board of Secondary Education Act-1963 |
522 | |||
| 24 |
The Kolkata Municipal Corporationonlinecareer360.com
A civic and social organization based in Kolkata, West Bengal, India dedicated to serving the community with various municipal services |
492 | |||
| 25 |
MSTC Ltd.mstcindia.co.in
A company facilitating procurement of industrial materials for principals and providing a virtual marketplace for metal scrap, surplus stores, and more Offering e-commerce services |
489 | |||
| 26 |
Damodar Valley Corporationdvc.gov.in
A multipurpose river valley project in India engaged in power generation, transmission, water resources management, and socio-economic development, focusing on renewable energy |
482 | |||
| 27 |
Presidency University, Kolkatapresiuniv.ac.in
A historic public state university in Kolkata established in 1817, known for its tradition of research and unique undergraduate teaching |
461 | |||
| 28 |
The West Bengal University of Health Sciences, Kolkatawbuhs.ac.in
A higher education institution located in Kolkata, West Bengal, India, focused on health sciences |
449 | |||
| 29 |
Ordinance Factoryofbindia.gov
The company specializes in supplying weapons, ammunition, explosives, military vehicles, armored vehicles, optical devices, and parachutes |
412 | |||
| 30 |
R.G. Kar Medical College and Hospitalnyxprep.com
A government medical college and hospital in Kolkata, India, providing medical education and services since 1886, affiliated with West Bengal University of Health Sciences |
390 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
More company lists in Kolkata
- The largest companies in Kolkata 594
- Manufacturers in Kolkata 115
- Multinational companies in Kolkata 66
- Education providers in Kolkata 65
- Publicly traded companies in Kolkata 55
- Retail chains in Kolkata 53
- Corporate groups and holding companies in Kolkata 49
- IT Services and IT Consulting companies in Kolkata 46
- Critical infrastructure operators in Kolkata 45
- Financial services firms in Kolkata 44
- Companies with in-house R&D in Kolkata 44
- Financial Services companies in Kolkata 36
- Energy companies in Kolkata 34
- IT services companies in Kolkata 33
- Healthcare providers in Kolkata 31
- Education Administration Programs companies in Kolkata 27
- Higher Education companies in Kolkata 27
- Hospitals and Health Care companies in Kolkata 27
- Consumer goods companies in Kolkata 26
- Chemical companies in Kolkata 25
The same list elsewhere in India
- Public sector organisations in India 877
- Public sector organisations in Maharashtra 111
- Public sector organisations in Uttar Pradesh 62
- Public sector organisations in Gujarat 51
- Public sector organisations in West Bengal 49
- Public sector organisations in Karnataka 48
- Public sector organisations in Kerala 45
- Public sector organisations in Tamil Nadu 43
- Public sector organisations in New Delhi 168
- Public sector organisations in Mumbai 60
- Public sector organisations in Bengaluru 35
- Public sector organisations in Chennai 31