This list comprises public sector organizations in Chennai, primarily focusing on banking, higher education, and justice administration. Key organizations include Indian Bank, offering diverse financial services, and the Indian Institute of Technology, Madras, a prominent institution for technological education and research. Other notable entities are Anna University Chennai, specializing in engineering and technology, and the High Court of Madras, a historic legal institution.
A significant pattern observed is the concentration of these entities within a few core public sectors. For instance, the banking sector is represented by Indian Bank and INDIAN OVERSEAS BANK, while higher education features prominently with institutions like the University of Madras. This indicates a strong public sector presence in these service-oriented fields in Chennai.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Indian Bankindianbank.bank.in
Offers diverse financial services including deposits, loans, cards, and remittances across India and internationally, serving various customer segments. |
16,376 | |||
| 2 |
Indian Institute of Technology, Madrasiitm.ac.in
An institute of national importance offering higher technological education, research, and consultancy services with a focus on engineering and pure sciences |
9,505 | |||
| 3 |
INDIAN OVERSEAS BANKiob.bank.in
Government-backed public sector bank providing financial services with majority ownership from the Government of India |
7,711 | |||
| 4 |
Anna University Chennaiannauniv.edu
Higher education in engineering, technology, architecture, applied sciences with focus on research and industry-academia collaboration for societal needs. |
7,705 | |||
| 5 |
invalid15094330annauniv.edu
An educational institution offering higher education in engineering, technology, and allied sciences, promoting research, and fostering cooperation between academia and industry |
3,330 | |||
| 6 |
High Court of Madrastn.nic.in
A historic high court in Tamil Nadu, India, established in 1862 under Queen Victoria's Letters patent, serving as a key legal institution |
2,268 | |||
| 7 |
United India Insurance Co. Ltd.uiic.co.in
A government-owned general insurance company in India offering a range of insurance products and services to customers |
2,138 | |||
| 8 |
University of Madrasunom.ac.in
Higher education institution offering a wide range of courses with experienced faculty focused on quality education and student development. |
1,933 | |||
| 9 |
Indian Overseas Bankiob.bank.in
An established public sector bank in India, dedicated to serving the nation with financial services since 1937 |
1,478 | |||
| 10 |
High Court of Judicature at Madrashcmadras.tn.nic.in
Established in 1862, the High Court of Judicature at Madras is the highest court in Tamil Nadu, exercising original and appellate jurisdiction |
1,201 | |||
| 11 | 1,093 | ||||
| 12 |
Central Institute of Plastics Engineering & Technology (CIPET)cipet.gov.in
An autonomous institute in India offering training and services in the field of plastic engineering, including design, processing, testing, and consultancy |
1,044 | |||
| 13 |
Chennaichennaimetrorail.org
The company operates a rapid transit system in Chennai, India, providing efficient transportation services to the city's residents and visitors |
881 | |||
| 14 |
Tamilnadu Newsprint and PapersLimtiedtnpl.com
A producer of newsprint and paper products based in Tamil Nadu, specializing in printing and writing papers for various industries |
829 | |||
| 15 |
CSIR - Central Leather Research Instituteclri.org
A pioneering institute in India dedicated to advancing research, technology, education, and innovation in the leather sector for economic growth and global leadership |
801 | |||
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 |
Tamil Nadu Veterinary and Animal Sciences Universitytanuvas.tn.nic.in
The organization focuses on education, research, and extension activities in veterinary, animal, fisheries, food, and dairy sciences to benefit farmers |
692 | |||
| 17 |
MMTC Limitedmmtclimited.com
India's largest trading giant with extensive international trade network, specializing in import-export operations, promoting joint ventures for market opportunities worldwide |
689 | |||
| 18 |
NPTELnptel.ac.in
Provides free high-quality digital education resources, including courses in engineering, science, arts, and technology, empowering learners across India to acquire essential skills and knowledge. |
660 | |||
| 19 |
Chennai Metro Rail Limitedchennaimetrorail.org
Special Purpose Vehicle implementing Chennai Metro Rail Project, now a Joint Venture of Government of India and Tamil Nadu |
640 | |||
| 20 |
Madras Medical College (MMC)
This company is a historic medical institution established in 1664, providing healthcare services, medical education, and research in Chennai, India |
593 | |||
| 21 |
Indira Gandhi Centre for Atomic Research (IGCAR)igcar.ernet.in
A research organization located in Kalpakkam, Chennai, India, focusing on atomic research and technological advancements in the field |
511 | |||
| 22 |
Indian Ordnance Factoriesofbindia.gov.in
The company specializes in producing, testing, and marketing a wide range of products for land, sea, and air systems with a focus on research and development |
444 | |||
| 23 |
National Institute of Ocean Technologyniot.res.in
An autonomous institute under the Ministry of Earth Sciences in India specializing in developing ocean technologies for sustainable resource utilization and environmental management |
418 | |||
| 24 |
Indian Institute of Information Technology Design & Manufacturing Kancheepuramiiitdm.ac.in
A Center of Excellence for design and manufacturing engineering education and research established by the Government of India |
368 | |||
| 25 |
Central Institute of Petrochemicals Engineering & Technology (CIPET)cipet.gov.in
The company offers education and training for skilled labor in the plastics and polymer science fields, as well as product development and mold production services |
353 | |||
| 26 |
TIDEL Park Limitedtidelpark.com
Information technology park in Chennai, part of key infrastructure projects transforming Tamil Nadu with a focus on IT development and economic growth |
349 | |||
| 27 |
STANLEY MEDICAL COLLEGE & HOSPITAL (Inst. Code - 002), CHENNAIstanleymedicalcollege.ac.in
A medical institution affiliated with the government providing healthcare services, medical education, and research opportunities |
347 | |||
| 28 |
Tamilnadu Electricity Boardtangedco.gov.in
A government-owned power generation and distribution company based in Tamil Nadu, India |
341 | |||
| 29 |
College of Engineering, Guindyceg.annauniv.edu
A higher education institution located in Chennai, India, offering engineering programs from its campus at Anna University in Guindy |
337 | |||
| 30 |
Anna Universityannauniv.edu
A public state university in Chennai, India, founded in 1978, named after a former Chief Minister of Tamil Nadu |
337 | |||
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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 Chennai
- The largest companies in Chennai 1,042
- Multinational companies in Chennai 211
- Manufacturers in Chennai 177
- Companies with in-house R&D in Chennai 132
- IT Services and IT Consulting companies in Chennai 118
- Education providers in Chennai 109
- IT services companies in Chennai 107
- Hardware manufacturers in Chennai 87
- Retail chains in Chennai 68
- Financial Services companies in Chennai 64
- Professional services firms in Chennai 64
- Financial services firms in Chennai 61
- Publicly traded companies in Chennai 61
- Companies with a mobile app in Chennai 60
- Corporate groups and holding companies in Chennai 56
- Consulting firms in Chennai 51
- Automotive manufacturers and suppliers in Chennai 50
- Critical infrastructure operators in Chennai 50
- Higher Education companies in Chennai 50
- AI companies in Chennai 45
- Software Development companies in Chennai 45
- Education Administration Programs companies in Chennai 43
- Hospitals and Health Care companies in Chennai 42
- Healthcare providers in Chennai 41
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 Kolkata 34