# Companies with in-house R&D headquartered in Mumbai

Tamtam tracks 258 companies with in-house R&D headquartered in Mumbai. This list ranks the 30 largest by number of employees on LinkedIn, led by Larsen & Toubro, Tata Steel and Cipla. Their median headcount is 13,339. Half of them were founded in 1968 or later.

These Mumbai-based companies with in-house R&D are primarily large, established firms across diverse industrial sectors. Key players include Larsen & Toubro, a multinational specializing in engineering and hi-tech manufacturing, and Tata Steel, a global steel company. The pharmaceutical sector is well-represented by companies like Cipla, providing medicines across 80+ countries, SUN PHARMA, a global specialty generic company, and Lupin, which offers branded and generic formulations. Asian Paints focuses on home improvement products.

A notable pattern among these companies is the strong presence of the pharmaceutical manufacturing industry, with several major global players headquartered in Mumbai. This indicates a significant concentration of research and development capabilities in the life sciences within the city.

🇮🇳 Mumbai · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Larsen & Toubro](https://www.tamtam.ai/c/larsen-and-toubro) (larsentoubro.com)<br>Multinational company specializing in engineering, procurement, construction projects, hi-tech manufacturing, and sustainability-focused services across over 50 countries worldwide. | Executive Offices | 🇮🇳 Mumbai | 142,350 |  |
| 2 | [Tata Steel](https://www.tamtam.ai/c/tata-steel) (tatasteel.com)<br>Global steel company with diverse operations worldwide, annual capacity of 34 million tonnes, focused on sustainability, employee well-being, and industry leadership Visit wwwtatasteelcom for more information | Mining | 🇮🇳 Mumbai | 58,399 |  |
| 3 | [Cipla](https://www.tamtam.ai/c/cipla-mumbai) (cipla.com)<br>A global pharmaceutical company with a compassionate approach to healthcare, providing high-quality medicines across 80+ countries for over 85 years | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 51,792 | 1935 |
| 4 | [SUN PHARMA](https://www.tamtam.ai/c/sun-pharma) (sunpharma.com)<br>A global specialty generic pharmaceutical company providing high-quality, affordable medicines in over 100 countries with extensive manufacturing and R&D capabilities | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 49,091 | 1983 |
| 5 | [Lupin](https://www.tamtam.ai/c/lupin) (lupin.com)<br>Global pharmaceutical company offering branded and generic formulations, biosimilars, and APIs Specializing in Anti-TB and Cephalosporin segments, with a focus on various therapeutic areas worldwide | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 28,290 | 1968 |
| 6 | [Asian Paints](https://www.tamtam.ai/c/asian-paints) (asianpaints.com)<br>The company transforms properties into homes, offering paints, wallpapers, wood finishes, adhesives, waterproofing solutions, and painting services for customers. | Manufacturing | 🇮🇳 Mumbai | 27,496 |  |
| 7 | [JSW Steel](https://www.tamtam.ai/c/jsw-steel) (jsw.in)<br>Leading Indian steel manufacturer with a focus on sustainability, technology, innovation, and R&D to produce value-added high-end steels for global markets | Mining | 🇮🇳 Mumbai | 24,342 |  |
| 8 | [Mahindra and Mahindra Limited \[Automotive and Farm Equipment Business\]](https://www.tamtam.ai/c/mahindra-and-mahindra-limited-automotive-and-farm-equipment-business) (jobs.mahindracareers.com)<br>A multinational group based in Mumbai, India, providing employment opportunities across various industries including automotive, farm equipment, information technology, and financial services | Motor Vehicle Manufacturing | 🇮🇳 Mumbai | 22,482 | 1945 |
| 9 | [Godrej & Boyce Mfg. Co. Ltd.](https://www.tamtam.ai/c/godrej-and-boyce-mfg-co-ltd) (godrejandboyce.com)<br>A trusted brand offering diverse products and services, including locks, consumer goods, furniture, precision manufacturing, aerospace, and infrastructure development, with a focus on meaningful work | Manufacturing | 🇮🇳 Mumbai | 19,330 |  |
| 10 | [Alkem Laboratories Ltd.](https://www.tamtam.ai/c/alkem-laboratories-ltd) (alkemlabs.com)<br>A leading pharmaceutical company with a global presence, specializing in generic and specialty medicines, driven by innovation and commitment to extended lifecare | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 16,200 | 1973 |
| 11 | [Glenmark Pharmaceuticals](https://www.tamtam.ai/c/glenmark-pharmaceuticals) (glenmarkpharma.com)<br>Research-driven global pharmaceutical company specializing in branded generics, specialty, and OTC products in dermatology, respiratory, and oncology. | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 15,495 |  |
| 12 | [Hindalco Industries Limited](https://www.tamtam.ai/c/hindalco-industries-limited) (hindalco.com)<br>A global metals powerhouse focusing on aluminum and copper production, with a strong emphasis on sustainability and innovative solutions | Mining | 🇮🇳 Mumbai | 14,486 |  |
| 13 | [Ipca Laboratories Limited](https://www.tamtam.ai/c/ipca-laboratories-limited) (ipca.com)<br>A global pharmaceutical company creating a wide range of formulations and APIs for various therapeutic segments with a focus on quality, safety, and innovation | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 14,284 |  |
| 14 | [KEC International Ltd.](https://www.tamtam.ai/c/kec-international-ltd) (kecrpg.com)<br>Engages in global infrastructure EPC across power transmission, railways, civil, urban, oil & gas, solar, and smart infrastructure, including manufacturing towers and poles. | Construction | 🇮🇳 Mumbai | 14,170 |  |
| 15 | [UPL](https://www.tamtam.ai/c/upl-mumbai) (upl-ltd.com)<br>Global provider of sustainable agriculture products and solutions including biologicals, crop protection, seeds, post-harvest, and digital services worldwide. | Farming | 🇮🇳 Mumbai | 13,339 |  |
| 16 | [MACLEODS PHARMACEUTICALS LTD.](https://www.tamtam.ai/c/macleods-pharmaceuticals-ltd) (macleodspharma.com)<br>A global pharmaceutical company specializing in developing, manufacturing, and marketing a wide range of formulations across major therapeutic areas to improve patients' quality of life worldwide | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 12,456 | 1989 |
| 17 | [Pidilite Industries Limited](https://www.tamtam.ai/c/pidilite-industries-limited) (pidilite.com)<br>A pioneer in consumer and specialty chemicals in India, offering a wide range of products including adhesives, sealants, construction chemicals, and art materials | Chemical Manufacturing | 🇮🇳 Mumbai | 10,944 | 1959 |
| 18 | [Blue Star Limited](https://www.tamtam.ai/c/blue-star-limited) (bluestarindia.com)<br>Leader in air conditioning and refrigeration solutions, offering cooling products like water purifiers and air coolers, as well as MEP services and industrial project execution | HVAC and Refrigeration Equipment Manufacturing | 🇮🇳 Mumbai | 10,387 | 1943 |
| 19 | [Indian Institute of Technology, Bombay](https://www.tamtam.ai/c/indian-institute-of-technology-bombay) (iitb.ac.in)<br>A renowned engineering institute in India with top faculty, exceptional students, and a focus on academic excellence and research | Higher Education | 🇮🇳 Mumbai | 10,272 | 1958 |
| 20 | [Ajanta Pharma Ltd](https://www.tamtam.ai/c/ajanta-pharma-ltd) (ajantapharma.com)<br>A pharmaceutical company based in Mumbai, India with a strong presence in branded generics, generics in the USA, and emerging markets, focusing on various therapeutic areas and continuous research and development | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 9,156 | 1973 |
| 21 | [CEAT Limited](https://www.tamtam.ai/c/ceat-limited) (ceat.com)<br>A leading tire manufacturer in India, with global presence and innovative technology, producing high-performance tires for various vehicles and markets | Motor Vehicle Manufacturing | 🇮🇳 Mumbai | 8,561 |  |
| 22 | [Wockhardt Ltd.](https://www.tamtam.ai/c/wockhardt-ltd) (wockhardt.com)<br>A global pharmaceutical and biotechnology organization focusing on affordable, high-quality medicines, research, manufacturing, and advanced healthcare services worldwide | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 7,449 |  |
| 23 | [Nuvoco Vistas Corp. Ltd.](https://www.tamtam.ai/c/nuvoco-vistas-corp-ltd) (nuvoco.com)<br>A leading building materials company in India with a focus on cement, ready-mix concrete, and modern building materials for a sustainable world | Wholesale Building Materials | 🇮🇳 Mumbai | 6,538 | 1999 |
| 24 | [USV PRIVATE LIMITED](https://www.tamtam.ai/c/usv-private-limited) (usvindia.com)<br>A 62-year-old Indian healthcare company with pharmaceutical manufacturing, research, and marketing capabilities Leading in therapeutic segments like Cardio and Diabetology | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 5,966 |  |
| 25 | [JB](https://www.tamtam.ai/c/jb) (jbpharma.com)<br>A leading pharmaceutical company with 47 years of experience, offering over 350 products in 20 therapeutic areas, operating internationally with 8 state-of-the-art manufacturing facilities | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 5,359 | 1976 |
| 26 | [Indoco Remedies Ltd.](https://www.tamtam.ai/c/indoco-remedies-ltd) (indoco.com)<br>A research-oriented pharmaceutical company with a global presence, developing and manufacturing a wide range of pharmaceutical products for both Indian and international markets | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 5,217 | 1947 |
| 27 | [The Supreme Industries Ltd](https://www.tamtam.ai/c/the-supreme-industries-ltd) (supreme.co.in)<br>A pioneer in India's plastics industry with a wide range of products, advanced technology, and a focus on innovation and development | Plastics Manufacturing | 🇮🇳 Mumbai | 5,206 | 1942 |
| 28 | [Aarti Industries Ltd.](https://www.tamtam.ai/c/aarti-industries-ltd) (aarti-industries.com)<br>Specialty chemical company with global presence, specializing in benzene-based products for various industries, serving 1100+ customers in 60 countries | Chemical Manufacturing | 🇮🇳 Mumbai | 5,111 | 1984 |
| 29 | [FDC Limited](https://www.tamtam.ai/c/fdc-limited) (fdcindia.com)<br>A leading pharmaceutical company manufacturing high-quality healthcare products with globally approved facilities and exports to over 50 countries worldwide since 1936 | Pharmaceutical Manufacturing | 🇮🇳 Mumbai | 4,825 |  |
| 30 | [Tata Chemicals](https://www.tamtam.ai/c/tata-chemicals) (tatachemicals.com)<br>A global company within the Tata Group, specializing in Basic and Specialty Chemistry products, including soda ash, crop protection, and R&D capabilities | Chemical Manufacturing | 🇮🇳 Mumbai | 4,639 | 1939 |

## 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.

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Source: https://www.tamtam.ai/l/r-and-d-companies-mumbai