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48 leading critical infrastructure operators in Tamil Nadu

Tamtam tracks 48 critical infrastructure operators headquartered in Tamil Nadu. This list ranks all of them by number of employees on LinkedIn, led by Apollo Hospitals, Cholamandalam Investment and Finance Company Limited and Indian Bank. Their median headcount is 1,780. Half of them were founded in 1988 or later. The most common headquarters are Chennai (35) and Coimbatore (3).

馃嚠馃嚦 Tamil Nadu48 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Apollo Hospitalsapollohospitals.com

Leading integrated private hospital group in Asia offering healthcare services, insurance, telemedicine, education, pharmacy retail, and medical business process outsourcing with world-class technology

Hospitals and Health Care 馃嚠馃嚦 Chennai 28,238 n/a
2
Cholamandalam Investment and Finance Company Limitedcholamandalam.com

Provides vehicle finance, home loans, equity loans, SME lending, investment advisory, and stock broking through a network of branches across India.

Financial Services 馃嚠馃嚦 Chennai 24,983 n/a
3
Indian Bankindianbank.bank.in

Offers diverse financial services including deposits, loans, cards, and remittances across India and internationally, serving various customer segments.

Banking 馃嚠馃嚦 Chennai 16,376 1907
4
Star Health and Allied Insurance Co. Ltdstarhl.in

Indian health insurance provider, offering innovative products in health, personal accident, travel insurance, with a focus on customer service and digital transformation.

Insurance 馃嚠馃嚦 Chennai 15,778 2006
5
Equitas Small Finance Banklinktr.ee

Community-focused small finance bank providing seamless banking services, promoting financial aspirations, and giving back to communities with fairness and transparency

Banking 馃嚠馃嚦 Chennai 13,993 2007
6
TVS Credit Services Ltd.tvscredit.com

Providing timely, affordable credit products across various sectors including two-wheelers, used vehicles, consumer durables, and unsecured loans to empower customers.

Financial Services 馃嚠馃嚦 Chennai 13,034 2010
7
INDIAN OVERSEAS BANKiob.bank.in

Government-backed public sector bank providing financial services with majority ownership from the Government of India

Banking 馃嚠馃嚦 Chennai 7,711 1937
8
Shriram City Union Finance Limitedshriramfinance.in

A leading retail NBFC providing credit solutions for various types of loans to individuals and small businesses, focused on transformation and customer satisfaction

Financial Services 馃嚠馃嚦 Chennai 7,534 1986
9
City Union Bank Ltd.cityunionbank.bank.in

A well-established bank founded in 1904, offering a wide range of financial solutions with a strong network of branches and ATMs across India

Banking 馃嚠馃嚦 Kumbakonam 6,414 1904
10
IDFC FIRST Bharat Ltdidfcfirstbharat.com

A financial services provider offering loans, insurance, and empowerment programs to underserved rural women and families in five states

Banking 馃嚠馃嚦 Trichy 5,857 1986
11
Hinduja Leyland Financehindujaleylandfinance.com

Providing vehicle and housing finance solutions, leasing options, unsecured loans, and digital platforms for vehicle trade and logistics services.

Financial Services 馃嚠馃嚦 5,595 2008
12
Cholamandalam MS General Insurance Co. Ltd.cholainsurance.com

A joint venture between Murugappa Group and Mitsui Sumitomo, offering general insurance services in collaboration with a leading Japanese insurer

Insurance 馃嚠馃嚦 Chennai 5,316 n/a
13
CAMS Limitedcamsonline.com

A leading Mutual Fund Transfer Agency in India with a majority share of assets under management, founded in 1988 and publicly listed in 2020

IT Services and IT Consulting 馃嚠馃嚦 Chennai 5,272 1988
14
Karur Vysya Bank(KVB)kvb.bank.in

Established in 1916, this bank offers financial assistance to traders and agriculturists With 812 branches nationwide, they provide excellence in banking services

Banking 馃嚠馃嚦 Karur 4,795 1916
15
Sify Technologies Limited.sifytechnologies.com

An ICT service provider with a focus on Cloud solutions, offering Data Centers, Networks, Security services, and business transformation solutions to businesses

IT Services and IT Consulting 馃嚠馃嚦 Chennai 4,045 n/a
16
Hinduja Housing Financehindujahousingfinance.com

A housing finance company with a pan-Indian presence, offering customized solutions for home loans and real estate financing with a focus on customer satisfaction and value creation

Financial Services 馃嚠馃嚦 Chennai 3,553 2015
17
Kauvery Hospitalkauveryhospital.com

A global, multispecialty hospital with a focus on patient care, safety, and satisfaction, offering world-class medical services and advanced technology

Hospitals and Health Care 馃嚠馃嚦 Chennai 3,151 1999
18
VA TECH WABAG LTD.wabag.com

A global leader in water technology, providing comprehensive solutions for municipal and industrial sectors, focusing on sustainability and resource conservation

Environmental Services 馃嚠馃嚦 Chennai 3,069 1924
19
Royal Sundaram General Insurance Co. Limitedroyalsundaram.in

Leading provider of general insurance solutions for individuals, families, and businesses, offering a range of products including motor, health, home, and commercial insurance

Insurance 馃嚠馃嚦 Chennai 2,978 2001
20
Belstar Microfinance Limitedbelstar.in

Belstar offers collateral-free loans for enterprise development in farm and non-farm sectors through SHG and PRAGATI models

Banking 馃嚠馃嚦 Chennai 2,830 n/a
21
Tamilnad Mercantile Bank Ltdtmb.in

A scheduled commercial bank with 509 branches in 16 states and 4 union territories, serving customers in the private sector

Banking 馃嚠馃嚦 Thoothukudi 2,111 1921
22
CHRISTIAN MEDICAL COLLEGE AND HOSPITALcmcvellore.ac.in

A renowned medical college and hospital in Asia, known for research in the medical field, with a focus on holistic care and serving marginalized populations

Education Administration Programs 馃嚠馃嚦 Vellore 2,083 1900
23
Sundaram Finance Limitedsundaramfinance.in

A trusted financial institution providing dedicated customer service, fair business practices, and efficient financial policies for the transport sector in India

Financial Services 馃嚠馃嚦 Chennai 1,906 n/a
24
Christian Medical College Vellorecmch-vellore.edu

Providing high quality healthcare through education and training to develop compassionate, professional healthcare leaders in various medical disciplines

Hospitals and Health Care 馃嚠馃嚦 Vellore 1,780 1900
25
Five-Star Business Finance Limitedfivestargroup.in

Specialized financial services company in India addressing the needs of un-banked/ under-banked individuals and businesses, providing responsible credit services

Financial Services 馃嚠馃嚦 Chennai 1,715 1984
26
SHRIRAMCITYUNIONFINANCELIMITEDshriramcity.in

Established in 1986, this deposit-accepting NBFC offers a wide range of financial services including loans for consumer durables, vehicles, personal, business, and gold

Financial Services 馃嚠馃嚦 Mylapore 1,695 n/a
27
MGM Healthcaremgmhealthcare.in

A state-of-the-art hospital in Chennai, India, committed to delivering outstanding healthcare with world-class expertise and next-generation technologies for personalized medical care

Hospitals and Health Care 馃嚠馃嚦 Chennai 1,508 2017
28
Indian Overseas Bankiob.bank.in

An established public sector bank in India, dedicated to serving the nation with financial services since 1937

Banking 馃嚠馃嚦 Chennai 1,478 n/a
29
MIOT Internationalmiotinternational.com

A leading quaternary care multispecialty hospital with cutting-edge technology, expert professionals, and a global patient base seeking top-notch healthcare services

Hospitals and Health Care 馃嚠馃嚦 Chennai 1,471 1999
30
SIMS Hospital (SRM Institutes For Medical Science)simshospitals.com

A multi-super specialty tertiary care hospital offering advanced healthcare services with state-of-the-art technology, sub-specialized ICUs, and a focus on patient-centric care

Hospitals and Health Care 馃嚠馃嚦 Chennai 1,285 2012
31
TANGEDCOgov.in

The company is a leading energy provider and distributor established in 1957, restructured in 2008 to include subsidiary companies for transmission, generation, and distribution

Government Administration 馃嚠馃嚦 Chennai 1,093 n/a
32
Kovai Medical Center and Hospitalkmchhospitals.com

A 750-bedded multi-disciplinary advanced super specialty hospital offering a range of cutting-edge medical services and treatments in a serene environment

Hospitals and Health Care 馃嚠馃嚦 Coimbatore 1,020 1985
33
SRM Medical College Hospital and Research Centremedical.srmist.edu.in

Medical College Hospital and Research Centre located in a campus with multiple institutions, facilitating collaborative research and providing medical services

Hospitals and Health Care 馃嚠馃嚦 Chengalpattu 954 n/a
34
Sri Ramakrishna Hospitalsriramakrishnahospital.com

A healthcare provider in Tamil Nadu, India, specializing in hospital services and healthcare, located on Sarojini Naidu Road in Kovai

Hospitals and Health Care 馃嚠馃嚦 Coimbatore 911 n/a
35
Aban Offshore Limitedabanoffshore.com

Leading Indian offshore drilling contractor offering world-class services for oil exploration and production globally with innovative, cost-effective solutions and a highly qualified team

Oil and Gas 馃嚠馃嚦 Chennai 894 n/a
36
Chennaichennaimetrorail.org

The company operates a rapid transit system in Chennai, India, providing efficient transportation services to the city's residents and visitors

Truck Transportation 馃嚠馃嚦 Chennai 881 2007
37
Microsense Private Limitedmicrosensenetworks.com

Provider of high speed internet access services to the hospitality industry, with a pan India presence and international clients, offering managed services and ISP solutions

IT Services and IT Consulting 馃嚠馃嚦 Chennai 863 1982
38
Chennai Petroleum Corp Limited (CPCL), formerly known as Madras Refineries Limited (MRL)cpcl.co.in

An utilities organization based in Chennai, India, specializing in petroleum refining and related operations

Utilities 馃嚠馃嚦 Chennai 827 n/a
39
Dr.Mohan's Diabetes Specialities Centredrmohans.com

A leading centre for diabetes care, research, and prevention, recognized by WHO with a mission towards excellence in diabetes care

Hospitals and Health Care 馃嚠馃嚦 Chennai 752 1991
40
Rela Hospitalrelainstitute.com

International quaternary care hospital offering highest quality healthcare, cutting-edge technology, and specialized care, led by a world-renowned surgeon in Liver Surgery and Transplantation

Hospitals and Health Care 馃嚠馃嚦 Chennai 731 n/a
41
CMA CGM SHARED SERVICE CENTRE (INDIA) PRIVATE LIMITEDcmacgm-group.com

A global transportation and logistics group operating in over 160 countries, focusing on new partnerships, customer-centric innovations, and digitalization for the future

Maritime Transportation 馃嚠馃嚦 Chennai 720 n/a
42
ABC - Aditya Birla Money Limitedstocksandsecurities.adityabirlacapital.com

A subsidiary of a financial services company, offering securities broking, portfolio management, depository services, e-insurance repository, and commodity broking

Capital Markets 馃嚠馃嚦 Chennai 704 2008
43
Chennai Metro Rail Limitedchennaimetrorail.org

Special Purpose Vehicle implementing Chennai Metro Rail Project, now a Joint Venture of Government of India and Tamil Nadu

Rail Transportation 馃嚠馃嚦 Chennai 640 2007
44
Dr. Mehta's Hospitalsmehtahospital.com

A leading healthcare provider in India with over 90 years of experience, specializing in safe and effective patient care, birthing, and pediatric services

Hospitals and Health Care 馃嚠馃嚦 Chennai 605 1933
45
KG Hospitalkghospital.com

A leading not-for-profit hospital in Coimbatore, providing advanced and affordable healthcare with a focus on charitable missions and innovative medical research

Hospitals and Health Care 馃嚠馃嚦 Coimbatore 588 1974
46
Madura Micro Finance Ltdcreditaccessgrameen.in

An NBFC-MFI focused on providing financial products to underserved rural populations by offering credit facilities primarily to women self-help groups for small businesses

Financial Services 馃嚠馃嚦 Chennai 579 1999
47
Christian Medical College (CMC), Vellorecmch-vellore.edu

An unaided minority educational institution in Vellore, Tamil Nadu, providing medical education, nursing, and allied health sciences since 1900 Celebrating 120 years in 2020

Medical Practices 馃嚠馃嚦 Vellore 565 n/a
48
Shriram Capital Ltdshriramcapital.com

A leading conglomerate in India's financial services sector, offering a wide range of services including lending, insurance, brokerage, and wealth advisory

Financial Services 馃嚠馃嚦 Chennai 70 n/a

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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 Oct 24, 2026.

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