# The 30 largest companies with in-house R&D in Ahmedabad

Tamtam tracks 57 companies with in-house R&D headquartered in Ahmedabad. This list ranks the 30 largest by number of employees on LinkedIn, led by Zydus Group, Intas Pharmaceuticals and Torrent Pharmaceuticals Ltd. Their median headcount is 1,220. Half of them were founded in 1989 or later.

The companies in Ahmedabad with in-house R&D are primarily pharmaceutical manufacturers and biotechnology research firms. This group includes large enterprises like Zydus Group, a global healthcare provider, Intas Pharmaceuticals, which develops and markets generic pharmaceuticals, and Torrent Pharmaceuticals Ltd, known for its strong R&D focus. Other significant players are Cadila Pharmaceuticals Limited, specializing in a wide range of products, and Troikaa Pharmaceuticals Ltd., noted for its steady growth.

A notable pattern among these companies is their specialization in healthcare and related fields. Adani Solar, a large-scale solar module manufacturer, and SUZUKI MOTOR GUJARAT PRIVATE LIMITED, an automotive manufacturing plant, represent a smaller cluster of manufacturing companies outside the pharmaceutical sector.

🇮🇳 Ahmedabad · 30 companies · Updated Nov 13, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Zydus Group](https://www.tamtam.ai/c/zydus-group) (zyduslife.com)<br>Innovation-led global healthcare provider discovering, manufacturing, and marketing a wide range of therapies, with a focus on creating healthier communities worldwide | Pharmaceutical Manufacturing | 🇮🇳 Ahmedabad | 21,077 |  |
| 2 | [Intas Pharmaceuticals](https://www.tamtam.ai/c/intas-pharmaceuticals) (intaspharma.com)<br>Development, manufacturing, and marketing of generic pharmaceuticals and biosimilars with global presence and advanced R&D and manufacturing facilities. | Pharmaceutical Manufacturing | 🇮🇳 Ahmedabad | 19,912 |  |
| 3 | [Torrent Pharmaceuticals Ltd](https://www.tamtam.ai/c/torrent-pharmaceuticals-ltd) (torrentpharma.com)<br>A leading pharmaceutical company with strong R&D focus, global presence, acquisitions, and multiple USFDA approved manufacturing facilities, committed to providing quality healthcare solutions | Pharmaceutical Manufacturing | 🇮🇳 Ahmedabad | 12,032 | 1971 |
| 4 | [Cadila Pharmaceuticals Limited](https://www.tamtam.ai/c/cadila-pharmaceuticals-limited) (cadilapharma.com)<br>A leading pharmaceutical company based in India, focused on research, development, and manufacturing of a wide range of pharmaceutical products globally | Pharmaceutical Manufacturing | 🇮🇳 Ahmedabad | 9,404 | 1951 |
| 5 | [Adani Solar](https://www.tamtam.ai/c/adani-solar) (adanisolar.com)<br>Large-scale solar module and cell manufacturer building a fully integrated ecosystem from polysilicon to modules, including India's only ingot and wafer facility. | Renewable Energy Equipment Manufacturing | 🇮🇳 Ahmedabad | 5,573 | 2015 |
| 6 | [SUZUKI MOTOR GUJARAT PRIVATE LIMITED](https://www.tamtam.ai/c/suzuki-motor-gujarat-private-limited) (marutisuzuki.com)<br>Automotive manufacturing plant based in Gujarat, India, owned by a Japanese corporation, specializing in producing vehicles for the market | Motor Vehicle Manufacturing | 🇮🇳 Ahmedabad | 4,533 | 2015 |
| 7 | [Troikaa Pharmaceuticals Ltd.](https://www.tamtam.ai/c/troikaa-pharmaceuticals-ltd) (troikaa.com)<br>A pharmaceutical company founded in 1983 with steady growth through innovation, marketing, and multiple manufacturing facilities, employing over 2300 people | Pharmaceutical Manufacturing | 🇮🇳 Ahmedabad | 3,751 | 1983 |
| 8 | [Electrotherm (India) Limited](https://www.tamtam.ai/c/electrotherm-india-limited) (electrotherm.com)<br>Specializes in designing and manufacturing furnaces, refining equipment, casting machines, and plant automation for the steel industry while focusing on innovation and customer-centric solutions | Machinery Manufacturing | 🇮🇳 Ahmedabad | 2,156 | 1983 |
| 9 | [Zydus Cadila Healthcare Limited](https://www.tamtam.ai/c/zydus-cadila-healthcare-limited) (zyduscadila.com)<br>A biotechnology firm headquartered in Ahmedabad, India, focused on healthcare, specifically in the development of pharmaceuticals and biologics | Biotechnology Research | 🇮🇳 Ahmedabad | 1,827 |  |
| 10 | [Cliantha Research Limited](https://www.tamtam.ai/c/cliantha-research-limited) (cliantha.com)<br>A global Clinical Research Organization offering comprehensive services in various phases of clinical research, lab services, biometrics, and medical services | Research Services | 🇮🇳 Ahmedabad | 1,701 | 2004 |
| 11 | [Harsha Engineers International Limited](https://www.tamtam.ai/c/harsha-engineers-international-limited) (harshaengineers.com)<br>Global provider of Bearing Cages and Stamped Components with international presence, focusing on quality, innovation, and customer support for efficient industry performance | Industrial Machinery Manufacturing | 🇮🇳 Ahmedabad | 1,345 | 1972 |
| 12 | [Ahmedabad University](https://www.tamtam.ai/c/ahmedabad-university) (ahduni.edu.in)<br>Private research university focused on interdisciplinary learning, molding independent thinkers and compassionate leaders through innovative engagement with societal challenges | Higher Education | 🇮🇳 Ahmedabad | 1,295 | 2009 |
| 13 | [Lambda Therapeutic Research](https://www.tamtam.ai/c/lambda-therapeutic-research) (lambda-cro.com)<br>A global Clinical Research Organization offering end-to-end services including clinical trials, data management, drug safety, bioanalytical services, and biosimilar development | Research Services | 🇮🇳 Ahmedabad | 1,280 | 1998 |
| 14 | [Concord Biotech Limited](https://www.tamtam.ai/c/concord-biotech-limited) (concordbiotech.com)<br>A biotechnology company specializing in fermentation, semi-synthetic, and synthesis-based products, offering services in API production, enzymes, and contract manufacturing | Biotechnology Research | 🇮🇳 Ahmedabad | 1,228 | 2000 |
| 15 | [GREW Solar](https://www.tamtam.ai/c/grew-solar) (thegrewsolar.com)<br>An independent provider of sustainable energy solutions in India, specializing in solar components for large-scale projects and offering operational support and maintenance | Manufacturing | 🇮🇳 Ahmedabad | 1,220 | 2022 |
| 16 | [La Renon Healthcare Pvt.Ltd.](https://www.tamtam.ai/c/la-renon-healthcare-pvt-ltd) (larenon.com)<br>A dynamic pharma company offering high-quality pharmaceutical products for various critical illnesses, with a focus on research, technology, and global expansion | Pharmaceutical Manufacturing | 🇮🇳 Ahmedabad | 1,213 | 2007 |
| 17 | [Dishman Carbogen Amcis Ltd](https://www.tamtam.ai/c/dishman-carbogen-amcis-ltd) (imdcal.com)<br>Global pharmaceutical outsourcing partner offering a range of services, products, and manufacturing solutions to support the industry with high-value and high-quality solutions | Pharmaceutical Manufacturing | 🇮🇳 Ahmedabad | 1,100 | 1983 |
| 18 | [Mantra Softech](https://www.tamtam.ai/c/mantra-softech) (mantratec.com)<br>Manufacturing biometric and RFID products for security and identity. Pioneering solutions for government, telecom, banking, and enterprise sectors globally. | IT Services and IT Consulting | 🇮🇳 Ahmedabad | 1,063 | 2006 |
| 19 | [JAY Chemical Industries Private Limited](https://www.tamtam.ai/c/jay-chemical-industries-private-limited) (jaychemical.com)<br>Leading global producer of Reactive Dyes, with a yearly sales turnover of USD 220 Million Also manufacturing Disperse Dyes, Digital Textile Printing Ink, Construction Chemicals, and Textile Auxiliaries | Chemical Manufacturing | 🇮🇳 Ahmedabad | 1,050 | 1967 |
| 20 | [Astral Adhesives](https://www.tamtam.ai/c/astral-adhesives) (astraladhesives.com)<br>A leading Indian manufacturer specializing in adhesives, sealants, tapes, and construction chemicals for various industrial and consumer applications | Wholesale Building Materials | 🇮🇳 Ahmedabad | 1,049 |  |
| 21 | [Space Applications Centre, ISRO](https://www.tamtam.ai/c/space-applications-centre-isro) (sac.gov.in)<br>Designs space instruments, develops applications for societal benefits, and supports Indian satellite missions with transponders, sensors, ground systems, and data processing | Defense and Space Manufacturing | 🇮🇳 Ahmedabad | 1,039 | 1972 |
| 22 | [Amnex Infotechnologies](https://www.tamtam.ai/c/amnex-infotechnologies) (amnex.com)<br>Providing advanced technology solutions like AI, IoT, blockchain, and cloud computing to transform sectors including logistics, agriculture, mining, and smart cities. | IT Services and IT Consulting | 🇮🇳 Ahmedabad | 920 | 2018 |
| 23 | [Lincoln Pharmaceuticals Ltd](https://www.tamtam.ai/c/lincoln-pharmaceuticals-ltd) (lincolnpharma.com)<br>A manufacturing company founded in 1979 in Gujarat, India, committed to producing high-quality products in compliance with WHO-cGMP norms and ISO 9001:2015 certified Expanding to US and UK markets | Pharmaceutical Manufacturing | 🇮🇳 Ahmedabad | 911 | 1979 |
| 24 | [CEPT University](https://www.tamtam.ai/c/cept-university) (cept.ac.in)<br>This company focuses on all aspects of human habitats, offering teaching programs, research initiatives, and advisory projects to improve livability | Higher Education | 🇮🇳 Ahmedabad | 859 | 1962 |
| 25 | [Unison Pharmaceuticals Pvt. Ltd.](https://www.tamtam.ai/c/unison-pharmaceuticals-pvt-ltd) (unisonpharmaceuticals.com)<br>An emerging global pharmaceutical company with strong presence in Indian market, specializing in chronic segments and offering quality medicines at affordable prices | Pharmaceutical Manufacturing | 🇮🇳 Ahmedabad | 857 | 1981 |
| 26 | [SILVER OAK UNIVERSITY](https://www.tamtam.ai/c/silver-oak-university) (silveroakuni.ac.in)<br>A premier private institution offering engaging learning experiences, futuristic curriculum, advanced technology, eminent faculty, strong industry ties, and innovative education solutions | Education Administration Programs | 🇮🇳 Ahmedabad | 835 | 2009 |
| 27 | [Cygnet.One](https://www.tamtam.ai/c/cygnet-one) (cygnet.one)<br>Consolidates specialized offerings in compliance, digital engineering, enterprise modernization, data, AI, analytics hyper automation, test automation, and digital signature for global clients. | Software Development | 🇮🇳 Ahmedabad | 821 |  |
| 28 | [Bodal Chemicals Ltd](https://www.tamtam.ai/c/bodal-chemicals-ltd) (bodal.com)<br>A fast-growing, reliable public limited company in the dye stuff industry, known for its low production costs and impressive growth | Chemical Manufacturing | 🇮🇳 Ahmedabad | 768 | 1989 |
| 29 | [Matter](https://www.tamtam.ai/c/matter) (matter.in)<br>An innovation-intensive start-up creating futuristic electric vehicles and energy storage solutions, driving India towards a sustainable future with tech-backed alternatives | Motor Vehicle Manufacturing | 🇮🇳 Ahmedabad | 746 | 2019 |
| 30 | [TEXSPIN BEARINGS](https://www.tamtam.ai/c/texspin-bearings) (texspin.com)<br>A leading contributor to the automotive industry since 1961, specializing in technological components and systems with customized solutions backed by extensive R&D | Motor Vehicle Parts Manufacturing | 🇮🇳 Ahmedabad | 727 | 1961 |

## 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 13, 2026.

## More company lists in Ahmedabad

- [The largest companies in Ahmedabad](https://www.tamtam.ai/l/largest-companies-ahmedabad) (544)
- [Multinational companies in Ahmedabad](https://www.tamtam.ai/l/multinational-companies-ahmedabad) (123)
- [Manufacturers in Ahmedabad](https://www.tamtam.ai/l/manufacturers-ahmedabad) (107)
- [IT Services and IT Consulting companies in Ahmedabad](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-ahmedabad) (82)
- [IT services companies in Ahmedabad](https://www.tamtam.ai/l/it-services-companies-ahmedabad) (73)
- [Professional services firms in Ahmedabad](https://www.tamtam.ai/l/professional-services-firms-ahmedabad) (52)
- [Publicly traded companies in Ahmedabad](https://www.tamtam.ai/l/publicly-traded-companies-ahmedabad) (41)
- [Financial Services companies in Ahmedabad](https://www.tamtam.ai/l/financial-services-companies-ahmedabad) (36)
- [Corporate groups and holding companies in Ahmedabad](https://www.tamtam.ai/l/holding-companies-ahmedabad) (36)
- [Hardware manufacturers in Ahmedabad](https://www.tamtam.ai/l/hardware-companies-ahmedabad) (35)
- [Retail chains in Ahmedabad](https://www.tamtam.ai/l/retail-chains-ahmedabad) (35)
- [Energy companies in Ahmedabad](https://www.tamtam.ai/l/energy-companies-ahmedabad) (33)
- [AI companies in Ahmedabad](https://www.tamtam.ai/l/ai-companies-ahmedabad) (32)
- [Critical infrastructure operators in Ahmedabad](https://www.tamtam.ai/l/critical-infrastructure-operators-ahmedabad) (31)
- [Financial services firms in Ahmedabad](https://www.tamtam.ai/l/financial-services-firms-ahmedabad) (31)
- [Pharmaceutical companies in Ahmedabad](https://www.tamtam.ai/l/pharmaceutical-companies-ahmedabad) (29)
- [Education providers in Ahmedabad](https://www.tamtam.ai/l/education-companies-ahmedabad) (28)
- [Pharmaceutical Manufacturing companies in Ahmedabad](https://www.tamtam.ai/l/pharmaceutical-manufacturing-companies-ahmedabad) (27)
- [Consulting firms in Ahmedabad](https://www.tamtam.ai/l/consulting-firms-ahmedabad) (26)

## The same list elsewhere in India

- [Companies with in-house R&D in India](https://www.tamtam.ai/l/r-and-d-companies-india) (1,989)
- [Companies with in-house R&D in Maharashtra](https://www.tamtam.ai/l/r-and-d-companies-maharashtra) (513)
- [Companies with in-house R&D in Karnataka](https://www.tamtam.ai/l/r-and-d-companies-karnataka) (271)
- [Companies with in-house R&D in Tamil Nadu](https://www.tamtam.ai/l/r-and-d-companies-tamil-nadu) (226)
- [Companies with in-house R&D in Haryana](https://www.tamtam.ai/l/r-and-d-companies-haryana) (166)
- [Companies with in-house R&D in Gujarat](https://www.tamtam.ai/l/r-and-d-companies-gujarat) (143)
- [Companies with in-house R&D in Uttar Pradesh](https://www.tamtam.ai/l/r-and-d-companies-uttar-pradesh) (124)
- [Companies with in-house R&D in Telangana](https://www.tamtam.ai/l/r-and-d-companies-telangana) (69)
- [Companies with in-house R&D in West Bengal](https://www.tamtam.ai/l/r-and-d-companies-west-bengal) (54)
- [Companies with in-house R&D in Rajasthan](https://www.tamtam.ai/l/r-and-d-companies-rajasthan) (41)
- [Companies with in-house R&D in Andhra Pradesh](https://www.tamtam.ai/l/r-and-d-companies-andhra-pradesh) (36)
- [Companies with in-house R&D in Kerala](https://www.tamtam.ai/l/r-and-d-companies-kerala) (36)
- [Companies with in-house R&D in Punjab](https://www.tamtam.ai/l/r-and-d-companies-punjab) (34)
- [Companies with in-house R&D in Mumbai](https://www.tamtam.ai/l/r-and-d-companies-mumbai) (257)
- [Companies with in-house R&D in Bengaluru](https://www.tamtam.ai/l/r-and-d-companies-bengaluru) (235)
- [Companies with in-house R&D in Pune](https://www.tamtam.ai/l/r-and-d-companies-pune) (149)
- [Companies with in-house R&D in Chennai](https://www.tamtam.ai/l/r-and-d-companies-chennai) (132)
- [Companies with in-house R&D in New Delhi](https://www.tamtam.ai/l/r-and-d-companies-new-delhi) (126)
- [Companies with in-house R&D in Gurugram](https://www.tamtam.ai/l/r-and-d-companies-gurugram) (124)
- [Companies with in-house R&D in Noida](https://www.tamtam.ai/l/r-and-d-companies-noida) (75)
- [Companies with in-house R&D in Hyderabad](https://www.tamtam.ai/l/r-and-d-companies-hyderabad) (72)
- [Companies with in-house R&D in Kolkata](https://www.tamtam.ai/l/r-and-d-companies-kolkata) (44)
- [Companies with in-house R&D in Coimbatore](https://www.tamtam.ai/l/r-and-d-companies-coimbatore) (41)
- [Companies with in-house R&D in Vadodara](https://www.tamtam.ai/l/r-and-d-companies-vadodara) (40)

## The same list elsewhere

- [Companies with in-house R&D in the world](https://www.tamtam.ai/l/r-and-d-companies-in-the-world) (34,334)
- [Companies with in-house R&D in Asia](https://www.tamtam.ai/l/r-and-d-companies-in-asia) (4,159)

---

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