| # | Company | Employees |
|---|---|---|
| 1 |
Petrobraspetrobras.com.br
The company aims to provide ethical, safe, and competitive energy solutions while focusing on sustainability, environmental responsibility, and employee well-being |
56,267 |
| 2 |
Eletrobraseletrobras.com
Generation, transmission, commercialization, and energy efficiency programs; electric sector leader in Latin America, clean and renewable energy matrix. |
13,000 |
| 3 |
Supergasbras Energia Ltdasupergasbras.com.br
We are a leading distributor of LP Gas in Brazil, providing customized energy solutions to households and businesses, with a focus on quality, safety, and environmental sustainability |
4,857 |
| 4 |
Gran Services S.A.granihc.com
The company provides engineering, commissioning, and integrity management services for floating assets in the energy sector, as well as fiberglass composite materials for offshore industries |
3,589 |
| 5 |
Enevaeneva.com.br
A leading integrated energy operator, involved in exploration, production, and supply of energy solutions Operates gas fields and power generation assets across Brazil |
2,771 |
| 6 |
Oceanicaoceanica.com.br
Brazilian provider of services and engineering technology solutions for organizations involved in underwater activities |
2,672 |
| 7 |
BR Distribuidoravibraenergia.com.br
Energy distributor undergoing rebranding, active on social media platforms with a focus on oil and gas distribution and related services |
2,641 |
| 8 |
Ocyanocyan-sa.com
Specializing in sustainable solutions for the offshore oil and gas industry, the company focuses on safety, client partnership, and ethical operations with drilling and FPSO services |
2,637 |
| 9 |
Constellation Oil Servicestheconstellation.com
A drilling contractor specializing in deep and ultra-deepwater drilling, with a focus on safety, trust, excellence, and sustainability in operations |
2,357 |
| 10 |
PETROBRAS PETROLEO BRASILEIRO SApetrobras.com.br
A publicly traded company in the Oil and Gas industry, headquartered in Rio de Janeiro, founded in 1953 |
2,085 |
| 11 |
PRIOprio3.com.br
Leading independent oil and gas company in Brazil, focusing on efficient reservoir management and redeveloping mature fields with innovative approaches |
1,843 |
| 12 |
Odebrecht Óleo e Gásodebrechtoilgas.com
Provider of integrated solutions for the upstream oil and gas industry, offering services in offshore drilling, subsea construction, production, logistics, maintenance, and well services |
1,290 |
| 13 |
Ventura Offshorepetroservmarineinc.com
A Brazilian company providing drilling, completion, intervention, and production services for oil and gas wells, with a focus on quality, safety, and compliance |
1,205 |
| 14 |
Origem Energiaorigemenergia.com
Established in 2017, it specializes in energy integration across different sectors and operates across various states, offering a diverse portfolio of energy solutions |
1,090 |
| 15 |
ICONICiconic.com.br
A market-leading company formed from the merger of two lubricant businesses, specializing in development, production, and distribution of a wide range of products |
989 |
| 16 |
Refitrefit.com.br
A Brazilian refinery dedicated to producing Gasolina A, investing in modernization, governance practices, and delivering quality fuel to customers |
936 |
| 17 |
C.S.E. Mecanica e Instrumentação SAcsemil.com.br
Provider of mechanical, electrical, instrumentation, and construction services, specializing in industrial projects for the oil and petrochemical industry, including on-shore and off-shore operations |
863 |
| 18 |
Vertical Groupverticalgroup.com.br
Specialized in working at heights, servicing complex naval and industrial projects with a focus on safety, quality, and environmental responsibility |
745 |
| 19 |
SISTACsistac.com.br
Leading provider of engineering solutions for inspection, maintenance, and repair in the offshore oil & gas industry in Brazil, prioritizing safety, quality, and sustainability |
742 |
| 20 |
Qualitech IRMqualitechirm.com
A multinational provider of inspection, repair, and maintenance services in the oil, gas, and energy sectors, focusing on efficiency, safety, and sustainability |
657 |
| 21 |
Altera&Ocyanocyan-sa.com
Altera&Ocyan is a sustainable company providing solutions for the offshore upstream oil and gas industry in Brazil and internationally |
597 |
| 22 |
Sapura Navegação Marítima S.A.seagems.com.br
Specializing in subsea services, this Brazilian joint venture operates a fleet of vessels for support, installation, and pipe laying with a global presence in over 20 countries |
587 |
| 23 |
Grupo MPE - Montagens Projetos Especiais S/Agrupompe.com.br
Specializes in providing a wide range of integrated solutions and services tailored to meet the needs of various industries and sectors |
585 |
| 24 |
EBSE Engenharia de Soluçõesebse.com.br
Manufacturer of industrial equipment, pipes, and heavy-duty machinery, specializing in electromechanical assembly, pipe fabrication, modular structures for various industries since 1913 |
564 |
| 25 |
STEP Oil & Gasstep-og.com
Specializing in fabrication for the oil and gas industry, this company provides high-quality equipment, maintenance, and repair services with a focus on safety and innovation |
529 |
| 26 |
TBG - Transportadora Brasileira Gasoduto Bolívia-Brasil S.A.tbg.com.br
Specializing in natural gas transmission, the organization owns and operates a major pipeline in Brazil, offering services in planning, deploying, operating, and maintaining gas infrastructure |
524 |
| 27 |
Compagnie Maritime Monégasque (CMM)cmmoffshore.com
Leader in sustainable offshore operations in Brazil, focused on integrating green technologies and eco-friendly practices to set new benchmarks for eco-conscious services |
514 |
| 28 |
Kerui Método Construção e Montagem
A construction and assembly company formed from two leading international engineering companies, specializing in oil and gas equipment and complex project solutions |
489 |
| 29 |
Brasdril Sociedade de Perfuração (Diamond Offshore)noblecorp.com
Brazil-based drilling company specializing in perforation services |
456 |
| 30 |
TAGntag.com.br
Transporting gas across 10 Brazilian states, integrating energy from various sources to distribution networks, and providing proactive logistical solutions for energy security. |
419 |
| 31 |
NTS - Nova Transportadora do Sudestentsbrasil.com
NTS provides natural gas transportation in Brazil's industrialized Southeast region with a pipeline network connecting key cities and terminals |
385 |
| 32 |
Five Star Servicesfivestarservices.com.br
With over two decades of experience in the drilling and oil/gas industry, providing expert engineering & operational services focused on safety and quality |
382 |
| 33 |
Oil States Brasiloilstates.com
Engineering, project management, welding, fabrication, testing, and offshore services for players in the energy market with 24/7 capabilities in Brazil |
376 |
| 34 |
IBP - Instituto Brasileiro de Petróleo, Gás e Biocombustíveisibp.org.br
A private, non-profit organization founded in 1957, focused on promoting the development of the oil and gas industry towards competitiveness, ethics, and social responsibility |
362 |
| 35 |
GranEnergiagranenergia.com
An integrated offshore energy services company based in Brazil and the Netherlands, offering maritime operations, IMR, construction, supply chain management, and port services |
356 |
| 36 |
ALPHATEC S.A.ind.br
Provider of services and solutions for the oil and gas industry, offering construction, maintenance, eletromechanical assembly, wind turbine equipment, inspection, and special services |
353 |
| 37 |
Nitnavenitnave.com.br
A national company supporting the naval and offshore industry with services in naval maintenance, accessory fabrication, workforce, energy, gas, and sustainable energy |
353 |
| 38 |
Serviços Marítimos Continentalsmcontinental.com
With over 45 years of experience, this company specializes in successful and innovative maritime operations nationwide, delivering efficient solutions in challenging projects |
352 |
| 39 |
IESA Óleo & Gás S/Aiesa.com.br
A Brazilian company specializing in oil & gas projects with extensive experience in engineering, procurement, construction, and project management |
343 |
| 40 |
Sinopec International Petroleum do Brasil Ltda.sinopecbrasil.com.br
A major Chinese energy player with expertise in oil and gas exploration, processing, and distribution, operating in Brazil since 2005 |
340 |
| 41 |
Naturgy Brasilnaturgy.com.br
A multinational leader in gas and electricity, serving over 20 million customers in 20 countries Provides natural gas distribution, energy solutions, and renewable energy |
338 |
| 42 |
Träumetraumesolutions.com.br
The company specializes in engineering and supply solutions, aiming to be recognized for excellence, innovation, teamwork, and social responsibility |
186 |
| 43 |
Oilequipoilequip.com.br
Specializing in manufacturing, remanufacturing, and adapting oil & gas equipment for surface and subsea well completion, maintenance, and inspection services |
185 |
| 44 |
Desativadalinkedin.com
Provider of integrated logistics and supply chain solutions with a focus on port terminals, towage, shipping agency, offshore, and shipyards in Brazil |
180 |
| 45 |
EDF Norte Fluminenseedfnortefluminense.com.br
Generation of thermal and hydroelectric energy providing power to over four million people with focus on efficiency and environmental preservation. |
173 |
| 46 |
VRV SUBSEA & DRILLING REPAIRvrvservicos.com.br
Specializing in subsea services, VRV provides inspection, repair, remanufacturing, design, and manufacturing solutions for drilling contractors and FPSO operators in Brazil |
171 |
| 47 |
Deep Sea Supplysolstad.com
Offshore supply business owning and operating Anchor Handling Tug Supply vessels and Platform Supply Vessels worldwide, with a focus on short to medium term contracts |
159 |
| 48 |
IRM Servicesirmserv.com
A global service company specializing in providing innovative solutions to the Oil, Gas, Marine, and Energy Industries, with a focus on safety, efficiency, and quality |
156 |
| 49 |
C-Tankc-tank.com.br
Provider of industrial cleaning, HVAC duct cleaning, air/water/effluent analysis, industrial painting, and waste disposal services with a focus on excellence, innovation, and environmental responsibility |
154 |
| 50 |
Interseaintersea.com.br
With 35 years of experience, the company provides onshore and offshore support services throughout Brazil, delivering high-quality services to clients 24/7 |
148 |
| 51 |
Vast Infraestruturavastinfra.com.br
The company provides infrastructure and logistical solutions for the safe, clean, efficient, and sustainable movement of liquids within the energy market |
148 |
| 52 |
PPSA (Pré-Sal Petróleo S/A)presalpetroleo.gov.br
Established in 2013, this organization manages production-sharing contracts, oil and gas sales, and represents the government in production agreements within the Pre-Salt region |
146 |
| 53 |
Gon Petrogonpetro.com.br
A premium distributor of structural steel, pipes, fittings, flanges, valves, and fasteners Specializing in maintenance solutions for various industries with sales teams in key cities |
118 |
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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 24, 2026.
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