| # | 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 |
Ultragazultragaz.com.br
Provides energy solutions focused on customer convenience and sustainability, serving all regions of Brazil with dedicated service. |
5,377 |
| 4 |
Posto de Gasolina BR
A Brazilian oil and energy company located in Belo Horizonte, focused on operating gas stations and providing fuel services |
5,010 |
| 5 |
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 |
| 6 |
Perbrasperbras.com.br
A Brazilian company operating in the Oil and Gas industry for 50 years, focusing on innovation, low costs, and social responsibility |
3,602 |
| 7 |
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 |
| 8 |
Copa Energiacopaenergia.com.br
Leading the way in innovative energy solutions, driving sustainable development with a focus on clean energy sources for a better future |
3,454 |
| 9 |
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 |
| 10 |
Nacional Gásnacionalgas.com.br
A leading provider of residential gas distribution services since 1951, offering modern gas storage, bottling, and distribution facilities throughout Brazil |
2,763 |
| 11 |
Oceanicaoceanica.com.br
Brazilian provider of services and engineering technology solutions for organizations involved in underwater activities |
2,672 |
| 12 |
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 |
| 13 |
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 |
| 14 |
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 |
| 15 |
Posto Ipiranga Portal
Inspiring society to evolve by passionately facilitating people's lives and mobility |
2,119 |
| 16 |
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 |
| 17 |
PetroReconcavopetroreconcavo.com.br
Specialized in developing and revitalizing mature and marginal fields in onshore basins, this company started its activities in February 2000 |
1,885 |
| 18 |
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 |
| 19 |
Comgascomgas.com.br
A leading distributor of natural gas in Brazil with a vast network reaching over 13 million consumers in residential, commercial, and industrial sectors |
1,789 |
| 20 |
Consigazconsigaz.com.br
A leading distributor of LPG offering gas in cylinders and through an intelligent on-site refueling system called System Bobtail |
1,656 |
| 21 |
Acelenacelen.com.br
An energy company investing, increasing efficiency, and boosting productivity in the Brazilian energy sector with high governance and safety standards, part of Mubadala Capital. |
1,590 |
| 22 |
Vallourec South Americavallourec.com
Manufacturing seamless steel pipes and providing mining, forestry, and anti-corrosive coating services for oil, gas, power generation, and diverse industrial automotive markets. |
1,509 |
| 23 |
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 |
| 24 |
Braserv Petróleobraservpetroleo.com.br
A national company providing services for oil and gas extraction, offering rental of drilling equipment and operations and maintenance services in Brazil and Colombia |
1,225 |
| 25 |
Grupo Edson Queirozgeq.com.br
A diversified conglomerate operating in energy, appliances, food & beverages, communication, agribusiness, and real estate, with a focus on quality and ethical principles |
1,221 |
| 26 |
NM ENGENHARIA E CONSTRUÇÕES LTDA.nmengenharia.com.br
With over three decades of experience, the company offers maintenance, construction, and assembly services, certified for its Integrated Management System It prioritizes social responsibility and safety, earning recognition nationally and internationally |
1,208 |
| 27 |
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 |
| 28 |
CESP100.51.164.5
Founded in 1966, the company operates two hydroelectric plants, supplying energy to various distributors and the free energy market, focusing on sustainable solutions and wealth generation |
1,131 |
| 29 |
Tuper S.A.tuper.com.br
Provider of innovative and competitive steel solutions, anticipating customer needs with excellent services and products Solid foundation based on core values |
1,090 |
| 30 |
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 |
| 31 |
SAPREFsapref.com
Leading crude oil refinery in Southern Africa, processing 24,000 tons daily to produce various grades of fuel, operating at high temperatures and pressures with a dedicated team |
1,006 |
| 32 |
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 |
| 33 |
Sociedade Fogás Ltdafogas.com.br
The company specializes in distributing LPG gas in the Western Amazon region, with a focus on expanding its market presence |
964 |
| 34 |
Câmara de Comercialização de Energia Elétrica - CCEE (Chamber of Electric Energy Commercialization)ccee.org.br
Operator of Brazil's electricity market, promoting fair trading, ensuring smooth market function, and fostering sector evolution discussions. |
941 |
| 35 |
Atem Distribuidoraatem.com.br
A company focused on developing sustainable, effective, and reliable businesses that exceed expectations through dedicated people, quality products, and excellent processes |
940 |
| 36 |
Refitrefit.com.br
A Brazilian refinery dedicated to producing Gasolina A, investing in modernization, governance practices, and delivering quality fuel to customers |
936 |
| 37 |
Apolo Tubulars S.A.tubosapolo.com.br
Specializing in high-quality pipes for the oil and gas industry |
894 |
| 38 |
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 |
| 39 |
ACV TECLINE ENGENHARIA LTDAacvtecline.com.br
Specialized engineering services provider offering project management solutions in the Energy sector (Oil & Gas), certified in ISO standards |
843 |
| 40 |
Posto ADE Ipiranga: Posto 24 horas, Conveniência, Águas Claras, Brasíliagrupofratelli.com.br
The group started in 2005 in fuel and agribusiness It expanded into food, container manufacturing, and urbanization, offering quality products and services |
830 |
| 41 |
Grupo Deciogrupodecio.com.br
Decio Estação de Serviços offers a complete range of services to care for truckers and travelers, providing fuel, accessories, amenities, and a home-like dining experience |
789 |
| 42 |
ONS - Operador Nacional do Sistema Eletricoorg.br
A non-profit entity overseeing the coordination and control of electricity generation and transmission in Brazil to ensure quality, reliability, and economy for consumers |
773 |
| 43 |
RodOilrodoil.com.br
A leading fuel distributor with over 550 branded and 2,000 unbranded gas stations across eight states, offering high-quality fuels, lubricants, and convenience store services |
760 |
| 44 |
Grupo Potencialpotencial.net.br
A petroleum company founded in 1994, expanding across southern and southeastern Brazil with over 100 branded gas stations and serving independent and large consumers Specializes in efficient, cost-effective fuel solutions |
750 |
| 45 |
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 |
| 46 |
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 |
| 47 |
Larco Petróleolarcopetroleo.com.br
One of the top 10 fuel distributors in the country, specializing in fuel distribution |
703 |
| 48 |
ELETROSUL Centrais Elétricas S.Aeletrosul.gov.br
A company in Brazil focused on generating and transmitting electricity, investing in research for alternative energy sources and diversifying the national energy matrix |
690 |
| 49 |
Conterpconterp.com.br
A Brazilian company specializing in onshore drilling using drilling rigs, offering well services, specialized operation and maintenance, field and production asset management, and environmental management |
660 |
| 50 |
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 |
| 51 |
Motrice Soluções em Energiamotricese.com.br
Specializing in EPC contracts for energy generation, cogeneration, transmission, and distribution projects |
638 |
| 52 |
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 |
| 53 |
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 |
| 54 |
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 |
| 55 |
Rede Marajóredemarajo.com.br
Specializing in comprehensive editing services, with a strong focus on attention to detail, quality, and client satisfaction |
580 |
| 56 |
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 |
| 57 |
Celg Dcelg.com.br
The company is responsible for distributing electricity in 237 municipalities in Goiás, serving over 2 million consumers and representing 24% of Brazil's energy consumption |
558 |
| 58 |
Braserv Petróleo Ltda.braservpetroleo.com.br
Specializing in oil exploration and production services, the company offers leasing of drilling rigs and peripherals, operation and maintenance services, with a focus on the Brazilian and Colombian markets |
552 |
| 59 |
Petroengpetroeng.com.br
A medium-sized engineering firm providing services in various sectors including projects, management, planning, and industrial assembly support from basic design to start-up |
531 |
| 60 |
PSE - Projetos e Serviços de Engenhariadrive.google.com
Specialized engineering services for energy, water, sanitation, gas, waste collection, and civil construction companies and concessions since 1992 |
530 |
| 61 |
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 |
| 62 |
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 |
| 63 |
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 |
| 64 |
Zaninizanini.godaddysites.com
A leading provider of comprehensive solutions and technology for various industries, including oil and gas, sugar and alcohol, and steelmaking |
495 |
| 65 |
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 |
| 66 |
ENGEMON Engenhariaengemon.net.br
Specializing in QSMS services, engineering, project execution, maintenance, and skilled labor supply for industrial projects, with a focus on quality and client satisfaction |
478 |
| 67 |
Asvotec Termoindustrial LTDAasvotec.com.br
A national metallurgical company with over 50 years of experience providing engineering solutions for various industries with high-quality and reliable products |
472 |
| 68 |
Auto Posto Castanheiras Petrobrás: Posto 24 horas, Conveniência, Águas Claras, Brasília, DFgrupofratelli.com.br
An expanding business focusing on fuel and urban development, with high-quality fuel stations in strategic locations and innovative urbanization projects in Brasília and Goiás |
460 |
| 69 |
Brasdril Sociedade de Perfuração (Diamond Offshore)noblecorp.com
Brazil-based drilling company specializing in perforation services |
456 |
| 70 |
SEPCO1 Construções do Brasil LTDA.en.sepco1.com
Specializing in EPC contracts and construction services in energy sector, with expertise in building substations, transmission lines, power plants, wind and solar parks |
454 |
| 71 |
Companhia Energética do Rio Grande do Norte - COSERNservicos.neoenergiacosern.com.br
A public utility distributing electricity to 34 million residents in 167 municipalities, operating with 1,406 MVA power, 52,892 km of distribution and transmission lines |
447 |
| 72 |
Oliveira Energiaoliveiraenergia.com.br
Established in 1972, specializing in serving isolated markets in the Amazon and Roraima, providing energy solutions for over 2 million people |
437 |
| 73 |
MFX do Brasilmfx.com.br
Specializing in umbilical manufacturing since 1982, this Brazilian pioneer offers a range of products and integrated supply solutions through its own port and multiple sales offices |
412 |
| 74 |
TAGntag.com.br
Leading gas transportation network in Brazil, spanning over 4,500 km across 10 states, ensuring safe and reliable energy supply for cities and industries nationwide |
411 |
| 75 |
Araporã Bioenergia S/Aaraporabioenergia.com.br
Agricultural industry leader in the Triângulo Mineiro region, utilizing cutting-edge technology for sugar, biofuel, and renewable energy production Focus on sustainability and community |
409 |
| 76 |
Chemtechsiemens-energy.com
Brazilian digital solutions provider in IT, engineering, and digitization for Process Industries, part of Siemens Energy group operating domestically and internationally |
399 |
| 77 |
Fugro Brasilfugro-br.com
A global provider of survey, diving, and ROV services across various industries worldwide |
388 |
| 78 |
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 |
| 79 |
Royal FICroyalfic.com.br
A leading petroleum derivatives distributor in Brazil, known for reliability, quality products, and commitment to environmental and occupational safety standards |
383 |
| 80 |
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 |
| 81 |
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 |
| 82 |
Outraelecomp.info
Specialized company in assembling lithium battery packs for transponders Also provides maintenance for electronic equipment used in platforms Contact for a free quote |
364 |
| 83 |
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 |
| 84 |
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 |
| 85 |
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 |
| 86 |
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 |
| 87 |
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 |
| 88 |
Rede HGredehg.com.br
A network of strategically located fuel stations offering a range of services including maintenance, accommodation, and logistics for transport businesses |
345 |
| 89 |
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 |
| 90 |
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 |
| 91 |
Vale do Paraná S/A - Álcool e Açúcar
An oil & energy business based in São Paulo, Brazil, focusing on alcohol and sugar production |
340 |
| 92 |
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 |
| 93 |
Vale do Paracatu Bioenergia S/Avpabio.com.br
A sugar cane processing facility in Paracatu, Brazil, with a capacity of 15 million tons per harvest season in the Minas Gerais region |
335 |
| 94 |
Seacrest Petroleoseacrestpetroleo.com.br
Independent oil and gas producer with onshore fields and export infrastructure in Brazil, with large reserves and plans for significant production growth |
329 |
| 95 |
Refinaria Riograndenserefinariariograndense.com.br
Brazil's first oil refinery, operating since 1937 with a focus on producing fuels and petroleum products, innovating, and serving diverse markets while maintaining community commitment |
328 |
| 96 | 320 | |
| 97 |
AmazonGás Distribuidora de GLPamazongas.com.br
A gas manufacturer and distributor operating in four states, providing residential gas cylinders and tank truck services for condos, businesses, and industries They also offer gas pipeline installation services |
320 |
| 98 |
Bahiagás - Companhia de Gás da Bahiabahiagas.com.br
Leading distributor of natural gas in Bahia, Brazil since 1994, serving residential, commercial, industrial, automotive, and power generation sectors through infrastructure expansion and strategic growth initiatives |
311 |
| 99 |
Mahle Rede de Postospostosmahle.com.br
A company with 33 years of experience in the fuel market, providing high-quality fuel and a focus on customer experience and regional service excellence |
311 |
| 100 |
Etesco Brasil, LTDetesco.com.br
Established in 1956, this family-owned construction company specializes in Oil and Gas services, focusing on Exploration, Production, and Water Treatment |
303 |
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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 10, 2026.
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