| # | Company | Employees |
|---|---|---|
| 1 |
Indian Oil Corporation Limited
A national oil company in India involved in the entire hydrocarbon value chain, including refining, transportation, marketing, exploration, production, and petrochemicals |
29,849 |
| 2 |
Bharat Petroleum Corporation Limitedbharatpetroleum.in
Refining crude oil, marketing petroleum products, with significant presence in upstream and downstream oil and gas sectors, targeting net-zero by 2040. |
23,037 |
| 3 |
L&T Hydrocarbon Engineering Limitedlntenergy.com
Provides integrated engineering, procurement, fabrication, construction, and project management solutions for large, complex offshore and onshore hydrocarbon projects worldwide. |
9,890 |
| 4 |
Nayara Energynayaraenergy.com
International energy company with strong presence in hydrocarbon value chain, from refining and production to marketing and retail of oil and petroleum products. |
5,107 |
| 5 |
JSW Energy Ltdjswenergy.in
Leading private sector power producer focused on efficient resource utilization, social and economic benefits, minimal environmental impacts, and innovative growth |
3,927 |
| 6 |
OCS Servicesocs.services
A leading provider of integrated marine and offshore services for the oil & gas industry globally, with a strong global footprint |
1,207 |
| 7 |
Offshore Infrastructures Limitedoffshoreinfra.com
An Oil and Energy company based in Mumbai, India, specializing in offshore infrastructures for the oil and gas industry |
1,108 |
| 8 |
Mahanagar Gas Limitedmahanagargas.com
A leading natural gas distribution company in Mumbai and surrounding areas with over 2 million customers, offering PNG and CNG services for households and vehicles |
1,042 |
| 9 |
The Choksi Groupthechoksigroup.com
This conglomerate operates in oil and gas, textile, infrastructure, and energy sectors, focusing on growth in India's future infrastructure and clean energy needs |
911 |
| 10 |
Greatshipgreatshipglobal.com
Provider of quality offshore oilfield services with technologically advanced vessels and modern drilling units, supporting exploration and production activities globally |
908 |
| 11 |
HAL OFFSHORE LTDhaloffshore.in
A leading provider of underwater and EPC services to the Indian oil and gas industry, specializing in turnkey sub-sea projects |
886 |
| 12 |
NPCC Engineering Pvt. Limitednpcc.ae
A subsidiary providing Design & Engineering services for Offshore Oil & Gas Industry, focusing on creating a performance-driven, open, professional work environment |
875 |
| 13 |
Savita Oil Technologies Limitedsavita.com
India's leading petroleum specialities provider with a diverse product portfolio including Transformer Oils, Lubricants, Renewable Energy solutions, and environmentally friendly products |
690 |
| 14 |
Oil Field Instrumentation (India) PVT. LTD.ofiindia.com
A provider of specialized equipment and services for the oilfield sector, offering top-notch mud logging services and high-end software solutions worldwide |
626 |
| 15 |
Lizmontagens India Private Limitedlizmontagens.com
Global conglomerate offering EPC turnkey refractory services, plant operation & maintenance contracts, specialized repairs, project execution, and engineered composites for various industries |
610 |
| 16 |
TEMA INDIA PVT LTDtemaindia.com
A leading manufacturer of Process Equipment for Oil&Gas, Chemicals, Nuclear, Power, and New Energy industries, known for patented designs prioritizing safety and reliability |
609 |
| 17 |
Raj Petro - A Member of the Shell Grouprajgrp.com
A global petrochemical manufacturing and marketing company offering a wide range of products for various industries with advanced research and manufacturing facilities in India |
608 |
| 18 |
Aegis Logistics Limitedaegisindia.com
A subsidiary of Aegis Group, the company is a leader in India's downstream oil and gas sector, specializing in LPG distribution and logistics services |
591 |
| 19 |
Nandan Petrochem Limitedvelvex.in
A leading manufacturer of genuine oils, greases, and specialty oils, offering a wide range of lubricant products with a strong presence in India and overseas markets |
558 |
| 20 |
IndianOil Adani Ventures Limitediotl.com
An integrated services provider in India offering terminalling services for petroleum, petrochemical, and chemical companies, with a focus on infrastructure and niche capabilities |
542 |
| 21 |
Essar Oil and Gas Exploration and Production Ltdessaroilandgas.com
A leading E&P company in India focused on Unconventional Hydrocarbons, with a resource base of 12 TCF strategically located across key sedimentary basins |
528 |
| 22 |
GOL Offshore Limited
Integrated offshore oilfield services provider offering drilling, marine logistics, construction, and port services for E&P operators in India and globally |
524 |
| 23 |
Aegis Vopak Terminals Limited
The company operates a network of terminals in strategic ports in India, offering tank storage for LPG and chemicals |
500 |
| 24 |
IXAR (Industrial X-Ray & Allied Radiographers (I) Pvt. Ltd.)ixar.in
The company provides third-party inspection, conventional and advanced NDT, and heat treatment services in the oil & gas sector and related industries |
499 |
| 25 |
VCS Quality Services Pvt. Ltd.vcsprojects.com
Provider of project management, construction supervision, compliance assessment, and engineering services to various industry sectors in India and overseas |
498 |
| 26 |
Gulf Oil Indiagulfoilltd.com
A leading player in the Indian lubricant market with a wide range of automotive and industrial products, strong distribution network, global presence, and focus on future mobility solutions |
481 |
| 27 | 454 | |
| 28 |
Gandhar Oil Refinery India Ltdgandharoil.com
A top Indian company specializing in oils and lubricants, known for their high-quality products and exceptional service in the industry |
389 |
| 29 |
Asian Energy Services Limitedasianenergy.com
A geophysical services company specializing in land and well seismic services for oil & gas, mining, and CBM industries, with a focus on informed exploration decisions |
375 |
| 30 |
Pipeline Infrastructure Limitedpipelineinfra.com
Infrastructure company operating a 1480 km long natural gas transmission pipeline in India, connecting supply hubs in the East to demand centers in the West |
342 |
| 31 |
IPOL Lubricants - GP Petroleums Ltd.gppetroleums.co.in
A trusted provider of customized lubricant solutions with a focus on quality and customer service in Industrial, Automotive, and Rubber Industries |
272 |
| 32 |
Abhitech Energycon Ltdabhitechenergycon.com
The company specializes in technology for conserving Solid and Liquid Fuels, optimizing combustion, reducing emissions, and enhancing energy efficiency |
229 |
| 33 |
Anchor Offshore Services Ltdanchoroffshore.com
A 38-year-old company in the Oil & Gas sector specializing in customized engineering packages for Platforms, Rigs, and Vessels, with aftersales and maintenance support |
180 |
| 34 |
Mega Pipes Pvt. Ltd.megapipes.in
A rapidly expanding corporation that operates in the plastic, steel, and real estate industries, known for manufacturing high-quality steel pipes and tubes |
172 |
| 35 |
Motul Indiamotulindia.com
A French company specializing in high-performance lubricants for engines (two-wheelers, cars, heavy duty vehicles) and industrial activities through Motul Tech entity |
165 |
| 36 |
Sharp Tanks and Structurals Private Limitedsharptanks.com
A leader in Engineering, Procurement & Construction services for Hydrocarbon, Oil and Gas, Petrochemical sectors, with expertise in tank construction and related civil works |
163 |
| 37 |
NPL Bluesky Automotive Pvt Ltdvelvex.in
Manufacturer and marketer of AdBlue庐/Diesel Exhaust Fluid in India, servicing OEMs and retail markets, meeting ISO 22241 standards for quality |
150 |
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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 10, 2026.
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