| # | Company | Employees |
|---|---|---|
| 1 |
USP - Universidade de São Paulowww5.usp.br
Public university maintained by São Paulo state, recognized globally for scientific productivity and quality through dedicated faculty, students, and staff. |
23,205 |
| 2 |
Prefeitura de São Pauloprefeitura.sp.gov.br
A municipal government entity based in São Paulo, focused on providing public services and overseeing administration within the city |
22,684 |
| 3 |
Tribunal de Justiça de São Paulotjsp.jus.br
Distributing justice with quality, promptness, ethics, and transparency in our mission |
18,616 |
| 4 |
Polícia Militar do Estado de São Pauloconcursos.policiamilitar.sp.gov.br
Opportunity to join the Military Police Take the chance to become a Military Police officer by applying through the provided link |
16,959 |
| 5 |
Universidade Estadual Paulista Júlio de Mesquita Filhowww2.unesp.br
A leading Brazilian university with a multicampus structure offering quality education, research opportunities, and community services to students and society |
9,365 |
| 6 |
Hospital das Clínicas da Faculdade de Medicina da USPhc.fm.usp.br
A public institution affiliated with a medical school in São Paulo, dedicated to health public healthcare through education, research, assistance, and management |
8,241 |
| 7 |
Unifesp - Universidade Federal de São Pauloportal.unifesp.br
Specialized institution in health sciences, offering training for human resources and conducting scientific research Provides clinical practice and welfare services |
7,476 |
| 8 |
Centro Paula Souzacps.sp.gov.br
An educational institution in São Paulo managing state technical schools and colleges, offering high-quality courses aligned with industry needs and regional development |
6,563 |
| 9 |
Defensoria Pública do Estado de São Paulodefensoria.sp.def.br
A public institution providing free legal assistance, promoting human rights, and defending individual and collective rights judicially and extrajudicially |
5,726 |
| 10 |
CPTM - Companhia Paulista de Trens Metropolitanoscptm.sp.gov.br
They operate a commuter railway transporting 19 million passengers per weekday across 196 km of track, serving 18 municipalities |
4,330 |
| 11 |
Metrô de São Paulometro.sp.gov.br
The company operates and expands the metro network in São Paulo, responsible for transportation planning and handling millions of daily passengers |
4,114 |
| 12 |
Instituto do Câncer do Estado de São Paulo - ICESPicesp.org.br
A leading oncology center in Latin America, focused on providing high-quality care, education, and research in the public health system |
4,018 |
| 13 |
Instituto Federal de Educação, Ciência e Tecnologia de São Paulo - IFSPifsp.edu.br
A century-old institution offering technical to postgraduate education across 37 campuses, contributing to social inclusion, regional development, and knowledge dissemination |
3,582 |
| 14 |
Serviço de Atendimento Móvel de Urgência -- SAMU
An emergency mobile medical service based in São Paulo, Brazil, providing urgent medical care and assistance to those in need |
2,574 |
| 15 |
Assembleia Legislativa do Estado de São Pauloal.sp.gov.br
The Legislative Power of the State of São Paulo proposes and approves laws and principles governing society, with 94 elected deputies |
2,519 |
| 16 | 2,334 | |
| 17 |
Instituto do Coração - InCor HCFMUSPlinktr.ee
A public university hospital specializing in cardiology, pneumology, and cardiac and thoracic surgeries, providing high complexity healthcare services |
2,326 |
| 18 |
Tribunal Regional do Trabalho da 2ª Regiãoww2.trt2.jus.br
A regional labor court in São Paulo region, promoting social peace through efficient and accessible judicial services with a focus on ethics and innovation |
2,172 |
| 19 |
CET - Companhia de Engenharia de Tráfegocetsp.com.br
Official page of a traffic engineering company under the Municipal Mobility Department of the São Paulo City Hall |
2,118 |
| 20 |
Corpo de Bombeiros da PMESPcorpodebombeiros.sp.gov.br
Official page of the Fire Department of the Military Police of the State of São Paulo, providing emergency services since 1880 Mission: excellence and quality with social trust |
1,972 |
| 21 |
Tribunal de Contastce.sp.gov.br
This government agency is dedicated to providing various services and resources to the public |
1,762 |
| 22 |
Prodamportal.prodam.sp.gov.br
Strategic IT and communication solutions integrator for the City of Sao Paulo, enhancing citizen quality of life through innovative and transparent measures |
1,759 |
| 23 |
TV Culturalinktr.ee
A public broadcasting network offering diverse, award-winning programming to millions nationwide through multiple platforms for over 47 years |
1,494 |
| 24 |
Instituto Federal de Educação, Ciência e Tecnologia de São Paulo (IFSP)ifsp.edu.br
Specializing in technological and higher education, this educational institution provides a range of educational programs and opportunities for students |
1,351 |
| 25 |
Instituto de Pesquisas Tecnológicasipt.br
A non-profit public research institute in Brazil focused on applied research, technical services, innovation, and professional education to support industry and public policies |
1,298 |
| 26 |
Fundação CASA/SPfundacaocasa.sp.gov.br
An organization in Sao Paulo dedicated to providing socioeducational assistance to adolescents in need |
1,285 |
| 27 |
Escola Politécnica da USPpoli.usp.br
A prestigious engineering school in Latin America offering a wide range of undergraduate, graduate, and specialization courses with excellent teaching and research facilities |
1,267 |
| 28 |
SPTranssptrans.com.br
Public transportation management organization in São Paulo, supervising bus lines operated by concessionaires, route planning, ticketing systems, and terminal management |
1,237 |
| 29 |
Tribunal Regional Federal da 3ª Regiãotrf3.jus.br
An organization within the Judiciary system that processes and adjudicates cases involving the federal government, with jurisdiction in São Paulo and Mato Grosso do Sul |
1,117 |
| 30 |
Hospital Municipal Dr. Moysés Deutsch - Parceria com Hospital Israelita Einsteinhmbm.org.br
A hospital opened in 2008 to support and strengthen basic health care in the M'Boi Mirim region, focusing on emergencies and maternity services for 3 million residents |
1,113 |
| 31 |
Mandaqui Hospital Complexhospitalmandaqui.com.br
Specialized government hospital founded in 1938, focused on treating tuberculosis patients in the State of São Paulo |
988 |
| 32 | 987 | |
| 33 |
CEAGESP - Companhia de Entrepostos e Armazens Gerais de Sao Paulo.ceagesp.gov.br
A public federal company in São Paulo ensures a sustainable supply chain for horticultural products through storage and distribution services |
943 |
| 34 |
Tribunal Regional Eleitoral de São Paulotre-sp.jus.br
Official profile of an organization ensuring the legitimacy of the electoral process, active on various social media platforms to engage with the public |
915 |
| 35 |
Escola Paulista de Medicina - EPM/UNIFESPunifesp.br
An institution offering a wide range of medical education programs, including Medicine, Nursing, Biomedical Sciences, Audiology, and Ophthalmic Technology Producing competent healthcare professionals |
818 |
| 36 |
AMAZULamazul.mar.mil.br
A public organization under the Ministry of Defense specializing in developing and maintaining sensitive technologies for the Navy's nuclear and submarine programs |
804 |
| 37 |
Instituto da Criança do Hospital das Clínicasicr.usp.br
Specializing in providing medical care to children and adolescents from Brazil and Latin America, offering a wide range of specialties, including rare diseases and transplants |
754 |
| 38 |
Instituto Dante Pazzanese de Cardiologia - IDPCidpc.org.br
Specialized in cardiovascular healthcare services, including outpatient care, emergency treatment, and research in cardiovascular diseases, focusing on prevention, diagnosis, treatment, and education |
738 |
| 39 |
COREN-SP - Conselho Regional de Enfermagem de São Pauloportal.coren-sp.gov.br
A federal entity in São Paulo state overseeing and regulating the practice of nursing professionals, ensuring compliance with professional standards and providing quality care |
700 |
| 40 |
EMPRESA METROPOLITANA DE TRANSPORTES URBANOS DE SÃO PAULO – EMTU/SPemtu.sp.gov.br
A government-controlled organization in São Paulo area overseeing and planning intercity public transportation systems in five regions |
646 |
| 41 |
Instituto Dante Pazzanese de Cardiologiaidpc.org.br
A hospital in São Paulo, Brazil, specializing in cardiology and providing healthcare services at its location in Vila Mariana |
645 |
| 42 |
Faculdade de Medicina da Universidade de São Paulofm.usp.br
The organization focuses on undergraduate and postgraduate education, research, and community service related to medicine, physiotherapy, speech therapy, and occupational therapy |
641 |
| 43 |
CDHU - Companhia de Desenvolvimento Habitacional e Urbano do Estado de São Paulocdhu.sp.gov.br
The organization is a government entity that focuses on developing affordable housing and urban areas in the state of São Paulo for low-income families |
637 |
| 44 |
Instituto de Infectologia Emilio Ribasemilioribas.sp.gov.br
Specialized urgent care centers in São Paulo offer rabies prevention services, advising residents to seek the nearest facility for assistance |
630 |
| 45 |
Instituto Adolfo Lutzial.sp.gov.br
The organization is a public health institute that leads surveillance, research, and innovation in biomedical, food, and chemical sciences, aiming to protect and improve public health |
621 |
| 46 |
CAIXA Assetcaixa.gov.br
A leading Brazilian asset management company with over $510 billion in assets under management, serving individuals, businesses, and government clients |
97 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 24, 2026.
More company lists in São Paulo
- The largest companies in São Paulo 3,574
- Financial Services companies in São Paulo 294
- Financial services firms in São Paulo 278
- Retail chains in São Paulo 253
- IT Services and IT Consulting companies in São Paulo 228
- Retail companies in São Paulo 209
- Critical infrastructure operators in São Paulo 193
- Education providers in São Paulo 157
- Healthcare providers in São Paulo 142
- Manufacturers in São Paulo 135
- E-commerce companies in São Paulo 128
- Hospitals and Health Care companies in São Paulo 116
- Construction companies in São Paulo 100
- Advertising Services companies in São Paulo 98
- SaaS companies in São Paulo 92
- Wellness and Fitness Services companies in São Paulo 89
- Investment Management companies in São Paulo 88
- Higher Education companies in São Paulo 82
- Food and Beverage Services companies in São Paulo 79
- Franchise networks in São Paulo 72
- Facilities Services companies in São Paulo 70
- Publicly traded companies in São Paulo 70
- IT services companies in São Paulo 67
- Consumer goods companies in São Paulo 65
The same list elsewhere in Brazil
- Public sector organisations in Brazil 377
- Public sector organisations in São Paulo State 74
- Public sector organisations in Rio de Janeiro State 57
- Public sector organisations in Minas Gerais 37
- Public sector organisations in Federal District 35
- Public sector organisations in Paraná 25
- Public sector organisations in Rio de Janeiro 45
- Public sector organisations in Brasília 30