Tamtam Start free

The 50 largest companies with in-house R&D in West Bengal

Tamtam tracks 54 companies with in-house R&D headquartered in West Bengal. This list ranks the 50 largest by number of employees on LinkedIn, led by Exide Industries Limited, Indian Institute of Technology, Kharagpur and Century Plyboards (I) Limited. Their median headcount is 708. Half of them were founded in 1977 or later. The most common headquarters are Kolkata (41).

馃嚠馃嚦 West Bengal50 companiesUpdated Nov 12, 2026

The companies with in-house R&D in West Bengal include a mix of large established enterprises and some mid-sized firms, predominantly in manufacturing and heavy industry. Exide Industries specializes in lead-acid storage batteries, while Century Plyboards manufactures plywood and laminates. SKIPPER LIMITED produces transmission structures and PVC pipes, and Vikram Solar is a solar module manufacturer. Coal India Limited operates in coal mining, and Titagarh manufactures railway rolling stock.

A clear pattern is the concentration of headquarters in Kolkata, indicating the city's role as a commercial and industrial hub within the region. The sectors represented include diversified manufacturing, chemicals, construction, and mining, alongside some professional training and higher education institutions.

#CompanyIndustryHeadquarters EmployeesFounded
1
Exide Industries Limitedexideindustries.com

A leading brand in India for over 70 years, specializing in manufacturing a wide range of lead-acid storage batteries for various industries globally

Manufacturing 馃嚠馃嚦 Kolkata 7,296 1947
2
Indian Institute of Technology, Kharagpuriitkgp.ac.in

An autonomous university in India, with 27 departments, offering education to over 10,000 students and employing 1,700 staff members

Higher Education 馃嚠馃嚦 Kharagpur 5,882 1951
3
Century Plyboards (I) Limitedcenturyply.com

Leading manufacturer of plywood, block boards, doors, laminates, and veneers in India, setting new standards in the decoratives industry since 1986

Wholesale Building Materials 馃嚠馃嚦 Kolkata 3,646 1986
4
SKIPPER LIMITEDskipperlimited.com

Leading manufacturer of Transmission & Distribution Structures, PVC Pipes & Fittings Top 3 in India, top 10 in the world, with global market reach in 45+ countries

Utilities 馃嚠馃嚦 Kolkata 2,647 1981
5
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

Mining 馃嚠馃嚦 Kolkata 2,498 1975
6
ICA Edu Skillsicajobguarantee.com

India's leading vocational training institute specializing in Computerised Accounting, offering job-oriented courses in Finance and Taxation with practical training and high placement rates

Professional Training and Coaching 馃嚠馃嚦 Kolkata 2,370 1999
7
Vikram Solarvikramsolar.com

A leading solar module manufacturer and integrated energy solutions provider, offering EPC and O&M services globally with a focus on high efficiency PV modules

Industrial Machinery Manufacturing 馃嚠馃嚦 Kolkata 2,081 2006
8
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

Construction 馃嚠馃嚦 Kolkata 1,989 1920
9
Ramkrishna Forgings Limitedramkrishnaforgings.com

A global leader in the forging industry, promoting innovation, sustainable growth, and social responsibility with operations in multiple countries

Industrial Machinery Manufacturing 馃嚠馃嚦 Kolkata 1,887 n/a
10
PCBL Chemicalpcblltd.com

A leading carbon black manufacturer with over 60 years of experience, operating in India and globally with state-of-the-art production plants and research centers

Chemical Manufacturing 馃嚠馃嚦 Kolkata 1,731 1960
11
Titagarhtitagarh.in

A leading Indian manufacturer of railway passenger and freight rolling stock, with global presence spanning India, Italy, and France Specializing in specialized engineering equipment

Automation Machinery Manufacturing 馃嚠馃嚦 Kolkata 1,556 1997
12
Paharpur Cooling Towerspaharpur.com

Global leader in process cooling equipment manufacturing with over 70 years of experience, offering custom solutions for industries worldwide

Construction 馃嚠馃嚦 Kolkata 1,523 1948
13
Usha Martin Limitedushamartin.com

Leading manufacturer of steel wire rope & related products for various industries worldwide, providing high-performance solutions through state-of-the-art facilities and global service centers

Manufacturing 馃嚠馃嚦 Kolkata 1,516 1960
14
M. N. Dastur & Co. (P) Ltd.dastur.com

A pioneering engineering consultancy with a global reputation offering integrated design and engineering services for projects across industries worldwide

Mining 馃嚠馃嚦 Kolkata 1,281 1955
15
Himadri Speciality Chemical Ltd.himadri.com

Leading specialty chemical company specializing in carbon products, with a focus on innovation, R&D, and vertical integration to cater to global industry needs

Chemical Manufacturing 馃嚠馃嚦 Kolkata 1,136 1987
16
Tega Industriestegaindustries.com

A global leader in heavy-duty engineering products for mining and material handling industries, with over 47 years of experience and a worldwide presence

Mining 馃嚠馃嚦 Kolkata 1,082 1976
17
TCG Lifesciences Pvt Ltd.tcgls.com

Global Contract Research and CDMO providing innovative R&D services in pharmaceutical, biotech sectors Specializing in chemistry synthesis, pharmacology, DMPK, and analytical development

Research Services 馃嚠馃嚦 Kolkata 1,079 2001
18
LUMINO INDUSTRIES LIMITEDluminoindustries.com

Manufacturer of overhead transmission line conductors and AB cables, also offering Engineering Procurement Construction services for last-mile electricity distribution in India

Electrical Equipment Manufacturing 馃嚠馃嚦 Kolkata 838 1989
19
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

Mining 馃嚠馃嚦 Kolkata 836 1975
20
Tata Metalikstatasteel.com

A leading manufacturer of foundry grade Pig Iron and Ductile Iron Pipes, providing the latest updates on products and innovations

Primary Metal Manufacturing 馃嚠馃嚦 Kolkata 809 1994
21
TIL Limitedtilindia.in

Manufacturing high-quality material handling and infrastructure equipment with advanced R&D, serving diverse industries across India and maintaining global alliances.

Machinery Manufacturing 馃嚠馃嚦 Kolkata 787 1944
22
Veedolveedolindia.com

Leading manufacturer and marketer of quality lubricants in India, catering to automotive and industrial segments with a range of high performance engine oils, gear oils, transmission oils, and greases

Oil and Gas 馃嚠馃嚦 Kolkata 776 1928
23
Aludecoraludecor.com

Manufacturer of high-quality coated and composite products using innovative technologies, eco-friendly materials, and stringent quality checks to meet international standards

Wholesale Building Materials 馃嚠馃嚦 Kolkata 737 2004
24
HEG limitedhegltd.com

An ISO certified graphite company with largest integrated plant globally, specializing in graphite electrodes and specialities, with strong focus on exports

Manufacturing 馃嚠馃嚦 A-12 Sector-1 732 1977
25
West Coast Paper Millswestcoastpaper.com

A leading paper producer in India, focused on innovation, sustainability, and quality, serving various industries with environmentally friendly products

Paper and Forest Product Manufacturing 馃嚠馃嚦 Kolkata 708 1961

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.

Get more companies, free
26
Lalbaba Engineeringlalbabagroup.com

Manufacturing group founded in 1964 specializing in pneumatic forging, fabrication, and supplying products to Indian Railways and OEMs

Industrial Machinery Manufacturing 馃嚠馃嚦 Kolkata 601 n/a
27
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

Shipbuilding 馃嚠馃嚦 Kolkata 591 1884
28
Pan Seedspanseeds.in

Agricultural seed producer specializing in high-quality rice seeds, expanding into other crops and agriculture hand sprayers with a strong distribution network

Farming 馃嚠馃嚦 Kolkata 582 1975
29
SRMB Steelsrmbsteel.com

A leading Indian reinforcement company with state-of-the-art production of TMT bars and sectional steel products, focused on meeting customer needs

Wholesale Building Materials 馃嚠馃嚦 Kolkata 577 1951
30
Indian Institute of Engineering Science and Technology (IIEST), Shibpuriiests.ac.in

National engineering and research institution offering bachelor's, master's, and doctorate degrees in engineering, architecture, science, and management since 1856 Located in West Bengal

Research Services 馃嚠馃嚦 Howrah 576 1856
31
Amity University Kolkataamity.edu

Provider of globally benchmarked, research-oriented education with industry-oriented academic programs and sprawling campus facilities comparable to Ivy League universities

Higher Education 馃嚠馃嚦 Kadampukur Village 574 2014
32
IISER KOLKATAiiserkol.ac.in

An autonomous institution integrating education with research through undergraduate teaching, doctoral and postdoctoral research programs in various disciplines

Research Services 馃嚠馃嚦 Nadia 563 2006
33
Jupiter International Limitedjil-jupiter.com

India-based solar power solutions company manufacturing high quality poly-crystalline solar cells with global standards Committed to quality, efficiency, and aggressive expansion in the industry

Renewable Energy Semiconductor Manufacturing 馃嚠馃嚦 Kolkata 543 1978
34
TATA MEDICAL CENTERtmckolkata.com

Integrated oncology facility providing comprehensive cancer care, education, and research with a philanthropic approach, serving all sections of society

Hospitals and Health Care 馃嚠馃嚦 Rajarhat 521 2004
35
Ion Exchange (India) Ltdionexchangeglobal.com

Specialists in water and environment management, providing total solutions for water treatment, waste water treatment, recycle, and zero liquid discharge

Water, Waste, Steam, and Air Conditioning Services 馃嚠馃嚦 Kolkata 517 1964
36
UNIVERSITY OF SCIENCE AND TECHNOLOGY, MEGHALAYAustm.ac.in

A private university in North East India offering accredited science & technology programs, promoting research, innovation, invention, and entrepreneurship for regional development

Higher Education 馃嚠馃嚦 Technocity 494 n/a
37
WPILwpil.co.in

A multinational pumps and systems company with a focus on specialized pumping products, offering end-to-end EPC solutions for large water distribution systems

Industrial Machinery Manufacturing 馃嚠馃嚦 Kolkata 454 1952
38
Indian Institute of Science Education & Research (IISER), Kolkataiiserkol.ac.in

This organization focuses on integrating teaching and cutting-edge research at research universities to make basic sciences more attractive and accessible

Higher Education 馃嚠馃嚦 Kalyani 453 n/a
39
Websol Energy System Limitedwebelsolar.com

A leading manufacturer in India of high-quality photovoltaic monocrystalline solar cells and modules for various applications since 1994

Renewable Energy Power Generation 馃嚠馃嚦 Kolkata 407 1994
40
Crescent Foundrycrescentfoundry.com

A prominent Indian exporter established in 1982 specializing in ferrous castings such as counterweights, municipal, agricultural, and other OEM products

Manufacturing 馃嚠馃嚦 Kolkata 405 1982
41
UDYOGIudyogisafety.com

The company provides integrated safety solutions, products, services, and training that comply with global standards, focusing on risk assessment and proactive safety management

Public Safety 馃嚠馃嚦 Kolkata 391 1982
42
Reeastindiapharma.org

A biotechnology organization specializing in pharmaceutical development, located in Kolkata, India

Biotechnology Research 馃嚠馃嚦 Kolkata 364 n/a
43
Sister Nivedita Universityac.in

A university in New Town, Kolkata offering a wide range of educational programs and research in various disciplines, focusing on skill development and women empowerment

Education Administration Programs 馃嚠馃嚦 Kolkata 335 n/a
44
La Opala RG Ltd.laopala.in

A leading tableware company in India manufacturing and marketing lifestyle products in the glass and glassware segment under various brands

Manufacturing 馃嚠馃嚦 Kolkata 334 1987
45
Shyam Steel Indiashyamsteel.com

A leading steel organization in India, known for quality products in infrastructure projects due to innovation, excellence, and dedication

Wholesale Building Materials 馃嚠馃嚦 New Town 318 1953
46
Balaji Solutions Limitedbalajisolutions.in

A leading electronics manufacturer in India producing chargers, cables, powerbanks, earphones, and more, with a focus on quality and consumer preferences

Computer Hardware Manufacturing 馃嚠馃嚦 Kolkata 310 2001
47
Susrut Eye Foundation & Research Centresusrut.org

A hospital and healthcare company in Kolkata, India, specializing in eye care, research, and providing medical services to the community

Hospitals and Health Care 馃嚠馃嚦 Kolkata 302 n/a
48
ESKAG Pharma (P) Ltd.eskag.in

A pharmaceutical company within Eskag Group specializing in manufacturing and marketing a wide range of specialty medicines and healthcare products

Pharmaceutical Manufacturing 馃嚠馃嚦 Kolkata 278 1972
49
The Institute of Neurosciences Kolkataneurokolkata.org

A state-of-the-art institute in Kolkata specializing in neurological disorders research and treatment, offering comprehensive programs for adults and children

Hospitals and Health Care 馃嚠馃嚦 Kolkata 267 n/a
50
MSR IT Ltd.msrlimited.com

Global technology provider delivering business solutions and consultancy services through industry-specific offerings like software development, technical support, and infrastructure management to clients worldwide

Technology, Information and Internet 馃嚠馃嚦 Kolkata 255 2003

Turn this list into pipeline

Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.

Build your own list, free

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 12, 2026.

More company lists in West Bengal

The same list elsewhere in India

The same list elsewhere