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

Tamtam tracks 126 companies with in-house R&D headquartered in New Delhi. This list ranks the 30 largest by number of employees on LinkedIn, led by Maruti Suzuki India Limited, Indian Oil Corp Limited and Hero MotoCorp. Their median headcount is 2,540. Half of them were founded in 1974 or later.

These are large companies with in-house R&D in New Delhi, primarily in manufacturing, energy, and pharmaceuticals. Many are established firms, with several founded in the mid-20th century. Maruti Suzuki India Limited manufactures and sells cars, while Indian Oil Corp Limited specializes in oil refining and distribution. Hero MotoCorp is a major two-wheeler manufacturer, and MANKIND PHARMA LTD develops and commercializes pharmaceutical products.

The data shows a strong presence of companies in the oil and gas sector, with Indian Oil Corp Limited, Oil and Natural Gas Corporation Ltd, and GAIL (India) Limited all being significant players. NTPC Limited, India's largest power generation utility, is also present. This indicates a concentration of energy-related R&D activities in the region.

🇮🇳 New Delhi · 30 companies · Updated Nov 13, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Maruti Suzuki India Limited](https://www.tamtam.ai/c/maruti-suzuki-india-limited) (marutisuzuki.com)<br>Manufacturing and selling feature-rich, affordable cars with a focus on quality, customer satisfaction, and transitioning to low-carbon technologies. | Motor Vehicle Manufacturing | 🇮🇳 New Delhi | 51,583 |  |
| 2 | [Indian Oil Corp Limited](https://www.tamtam.ai/c/indian-oil-corp-limited) (iocl.com)<br>Leading energy company specializing in oil refining, distribution, and marketing, ranked among the world's largest corporations globally. | Oil and Gas | 🇮🇳 New Delhi | 41,695 | 1959 |
| 3 | [Hero MotoCorp](https://www.tamtam.ai/c/hero-motocorp) (heromotocorp.com)<br>A leading manufacturer of two-wheelers in India, focused on redefining mobility through innovation, collaboration, and inspiring a sustainable future Equal opportunity employer | Motor Vehicle Manufacturing | 🇮🇳 New Delhi | 30,895 | 1984 |
| 4 | [NTPC Limited](https://www.tamtam.ai/c/ntpc-limited) (ntpc.co.in)<br>India's largest power generation utility, operating across fossil fuels, hydro, nuclear, and renewable energy sources, with a diversified portfolio including consultancy and training services | Real Estate | 🇮🇳 New Delhi | 26,494 | 1975 |
| 5 | [Bharat Heavy Electricals Limited](https://www.tamtam.ai/c/bharat-heavy-electricals-limited) (bhel.com)<br>A leading engineering and manufacturing enterprise specializing in power equipment, serving various sectors globally with a focus on sustainable business solutions and nation building initiatives | Appliances, Electrical, and Electronics Manufacturing | 🇮🇳 New Delhi | 21,861 | 1964 |
| 6 | [MANKIND PHARMA LTD](https://www.tamtam.ai/c/mankind-pharma-ltd) (mankindpharma.com)<br>Formulation, development, and commercialization of affordable, high-quality pharmaceutical, OTC, and FMCG products for global healthcare improvement. | Pharmaceutical Manufacturing | 🇮🇳 New Delhi | 18,718 | 1995 |
| 7 | [Oil and Natural Gas Corporation Ltd](https://www.tamtam.ai/c/oil-and-natural-gas-corporation-ltd) (ongcindia.com)<br>Largest Indian crude oil, natural gas producer. Integrated energy company with exploration, production, refining, petrochemicals, renewables, and global oil and gas properties. | Oil and Gas | 🇮🇳 New Delhi | 16,674 | 1956 |
| 8 | [Delhi University](https://www.tamtam.ai/c/delhi-university) (du.ac.in)<br>Non-profit foundation promoting alumni interaction, organizing academic events, and mobilizing funds to support university initiatives and values. | Higher Education | 🇮🇳 New Delhi | 14,349 | 1922 |
| 9 | [GAIL (India) Limited](https://www.tamtam.ai/c/gail-india-limited) (gailonline.com)<br>Largest natural gas company in India with operations in transmission, marketing, processing, LPG, petrochemicals, city gas, and exploration. | Oil and Gas | 🇮🇳 New Delhi | 9,153 | 1984 |
| 10 | [JK Tyre & Industries Ltd.](https://www.tamtam.ai/c/jk-tyre-and-industries-ltd) (jktyre.com)<br>A leading tire manufacturer known for pioneering radial technology, innovative products, and a commitment to excellence and global competitiveness in the industry | Motor Vehicle Manufacturing | 🇮🇳 New Delhi | 7,001 |  |
| 11 | [Engineers India Limited](https://www.tamtam.ai/c/engineers-india-limited) (engineersindia.com)<br>A leading engineering consultancy providing design, engineering, procurement, construction, and project management services primarily focused on oil & gas, petrochemical, and other industries globally | Oil and Gas | 🇮🇳 New Delhi | 4,773 | 1965 |
| 12 | [HFCL Limited](https://www.tamtam.ai/c/hfcl-limited) (hfcl.com)<br>A technology company specializing in digital network solutions for telcos, enterprises, and governments, offering high-tech products with a strong focus on R&D and sustainability | Telecommunications | 🇮🇳 New Delhi | 3,798 | 1987 |
| 13 | [Panacea Biotec](https://www.tamtam.ai/c/panacea-biotec) (panaceabiotec.com)<br>A progressive health management organization in India, conducting research, manufacturing, and marketing of pharmaceutical formulations, vaccines, and natural products | Pharmaceutical Manufacturing | 🇮🇳 New Delhi | 3,052 | 1994 |
| 14 | [Oil and Natural Gas Corporation Limited (ONGC)](https://www.tamtam.ai/c/oil-and-natural-gas-corporation-limited-ongc) (ongcindia.com)<br>A leading Indian government-owned oil and gas explorer and producer, responsible for a significant portion of India's domestic production | Oil and Gas | 🇮🇳 New Delhi | 3,040 |  |
| 15 | [SPR Auto Technologies Limited](https://www.tamtam.ai/c/spr-auto-technologies-limited) (shrirampistons.com)<br>A leading manufacturer providing end-to-end solutions for pistons, pins, rings, and engine valves, with a focus on advanced technology and global export | Motor Vehicle Parts Manufacturing | 🇮🇳 New Delhi | 2,540 | 1972 |
| 16 | [University of Delhi](https://www.tamtam.ai/c/university-of-delhi) (du.ac.in)<br>A premier university with a venerable legacy, diverse educational programs, distinguished faculty, and modern infrastructure, committed to excellence in teaching and research | Higher Education | 🇮🇳 New Delhi | 2,481 |  |
| 17 | [Godfrey Phillips India Limited](https://www.tamtam.ai/c/godfrey-phillips-india-limited) (godfreyphillips.co.in)<br>An FMCG company in India with a strong retail presence, offering tobacco, chewing products, mouth fresheners, and confectionary Emphasizes employee and stakeholder well-being | Manufacturing | 🇮🇳 New Delhi | 2,440 | 1933 |
| 18 | [Crystal Crop Protection Limited](https://www.tamtam.ai/c/crystal-crop-protection-limited) (crystalcropprotection.com)<br>A 40-year-old company specializing in manufacturing and marketing agrochemical products like insecticides, fungicides, and herbicides to support Indian agriculture | Chemical Manufacturing | 🇮🇳 New Delhi | 2,225 | 1994 |
| 19 | [Jawaharlal Nehru University](https://www.tamtam.ai/c/jawaharlal-nehru-university) (jnu.ac.in)<br>Premier university in India known for excellence in teaching, research, and accolades Offers diverse academic programs, collaborations with international universities, and prestigious faculty | Higher Education | 🇮🇳 New Delhi | 2,205 | 1966 |
| 20 | [ICAR- Indian Council of Agricultural Research](https://www.tamtam.ai/c/icar-indian-council-of-agricultural-research) (icar.org.in)<br>Coordination and management of agricultural research, education, and technology development across India, enhancing food production and security nationwide. | Government Administration | 🇮🇳 New Delhi | 2,052 | 1929 |
| 21 | [Marg ERP](https://www.tamtam.ai/c/marg-erp) (margcompusoft.com)<br>Leading provider of integrated business software for MSMEs, specializing in inventory, accounting, and ERP solutions Award-winning company with a focus on innovation and customer satisfaction | IT Services and IT Consulting | 🇮🇳 New Delhi | 1,984 | 2000 |
| 22 | [HPCL North Zone Allied Retail Business](https://www.tamtam.ai/c/hpcl-north-zone-allied-retail-business-new-delhi) (hindustanpetroleum.com)<br>A Fortune 500 entity in the petroleum industry with a vast retail network offering various commercial activities at its outlets | Oil and Gas | 🇮🇳 New Delhi | 1,869 | 1974 |
| 23 | [Vindhya Telelinks Limited](https://www.tamtam.ai/c/vindhya-telelinks-limited) (vtlrewa.com)<br>A leading supplier of Jelly Filled and Optic Fibre Telecommunication cables to major organizations in India since 1986 | Telecommunications | 🇮🇳 New Delhi | 1,650 |  |
| 24 | [Fiem Industries Ltd.](https://www.tamtam.ai/c/fiem-industries-ltd) (fiemindustries.com)<br>A leading player in the automotive lighting industry, supplying OEM products to major auto companies in India Diversified into LED lighting and passenger information systems | Motor Vehicle Manufacturing | 🇮🇳 New Delhi | 1,582 | 1952 |
| 25 | [Cosmo Films](https://www.tamtam.ai/c/cosmo-films) (cosmofilms.com)<br>Global leader in specialty films for flexible packaging, lamination, labeling, and industrial applications, offering a wide range of industry-grade films with international reach and accolades | Packaging and Containers Manufacturing | 🇮🇳 New Delhi | 1,580 | 1981 |
| 26 | [KEI Wires and Cables](https://www.tamtam.ai/c/kei-wires-and-cables) (kei-ind.com)<br>A manufacturing powerhouse specializing in a wide range of power cables, stainless steel wires, and specialty cables for diverse industries | Appliances, Electrical, and Electronics Manufacturing | 🇮🇳 New Delhi | 1,573 | 1968 |
| 27 | [Sharda Motor Industries Ltd](https://www.tamtam.ai/c/sharda-motor-industries-ltd) (shardamotor.com)<br>An ISO 9001 certified auto-ancillary company specializing in highly engineered products and services for the automotive industry, with a focus on sustainability and innovation | Motor Vehicle Parts Manufacturing | 🇮🇳 New Delhi | 1,443 | 1986 |
| 28 | [Poly Medicure Ltd](https://www.tamtam.ai/c/poly-medicure-ltd) (polymedicure.com)<br>A leading Indian medical device company focused on innovation, safety, and quality, offering over 125 products in 100 countries worldwide | Medical Equipment Manufacturing | 🇮🇳 New Delhi | 1,406 | 1997 |
| 29 | [CSIR India](https://www.tamtam.ai/c/csir-india) (solo.to)<br>A leading scientific and industrial research organization focused on innovation, technology solutions, human resource development, intellectual property, and environmental services | Research Services | 🇮🇳 New Delhi | 1,364 | 1942 |
| 30 | [Euler Motors](https://www.tamtam.ai/c/euler-motors) (eulermotors.com)<br>A leading OEM in India for commercial EVs, focusing on technological innovation and building a robust EV ecosystem for faster adoption | Motor Vehicle Manufacturing | 🇮🇳 New Delhi | 1,345 | 2018 |

## 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.

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## 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)
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- [Companies with in-house R&D in Gujarat](https://www.tamtam.ai/l/r-and-d-companies-gujarat) (143)
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- [Companies with in-house R&D in Telangana](https://www.tamtam.ai/l/r-and-d-companies-telangana) (69)
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## 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)

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