# Top 30 critical infrastructure operators in Curitiba

Tamtam tracks 35 critical infrastructure operators headquartered in Curitiba. This list ranks the 30 largest by number of employees on LinkedIn, led by Grupo Marista, Copel - Companhia Paranaense de Energia and Hospital Pequeno Principe. Their median headcount is 1,025. Half of them were founded in 1971 or later.

The critical infrastructure operators in Curitiba are dominated by large organizations in the healthcare and utility sectors. Grupo Marista, founded in 1817, impacts lives through education and social initiatives. Copel, established in 1954, manages electricity generation and distribution. Hospital Pequeno Principe is Brazil's largest pediatric hospital, while Sanepar provides water and sanitation services.

A significant pattern among these companies is their focus on public welfare and essential services. Most were founded in the mid-20th century, with several, like Hospital Universitário Evangélico Mackenzie and Hospital São Vicente, specializing in diverse medical fields and advanced treatments.

🇧🇷 Curitiba · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Grupo Marista](https://www.tamtam.ai/c/grupo-marista) (grupomarista.org.br)<br>Positively impacting lives through education, health, and advocacy for children's rights, while fostering innovation in these sectors. | Non-profit Organizations | 🇧🇷 Curitiba | 8,524 | 1817 |
| 2 | [Copel - Companhia Paranaense de Energia](https://www.tamtam.ai/c/copel-companhia-paranaense-de-energia) (copel.com)<br>Operates electricity generation, transmission, and distribution, serving millions of homes, plants, and commercial establishments in Paraná, Brazil, with extensive infrastructure. | Renewable Energy Power Generation | 🇧🇷 Curitiba | 6,890 | 1954 |
| 3 | [Hospital Pequeno Principe](https://www.tamtam.ai/c/hospital-pequeno-principe) (pequenoprincipe.org.br)<br>Largest pediatric hospital in Brazil, providing 70% of its services to the Brazilian public healthcare system | Hospitals and Health Care | 🇧🇷 Curitiba | 2,425 | 1919 |
| 4 | [HNSG - Hospital Nossa Senhora das Graças](https://www.tamtam.ai/c/hnsg-hospital-nossa-senhora-das-gracas) (hnsg.org.br)<br>A leading hospital in Curitiba with cutting-edge equipment, specialized medical staff, and national recognition in surgical treatment and bone marrow transplants | Hospitals and Health Care | 🇧🇷 Curitiba | 1,952 | 1953 |
| 5 | [Irmandade da Santa Casa de Misericórdia de Curitiba](https://www.tamtam.ai/c/irmandade-da-santa-casa-de-misericordia-de-curitiba) (irmandadesantacasacuritiba.com.br)<br>A philanthropic entity founded in 1852 to care for the most vulnerable patients, offering specialized medical services and promoting ethical and compassionate healthcare standards | Wellness and Fitness Services | 🇧🇷 Curitiba | 1,893 | 1852 |
| 6 | [Sanepar](https://www.tamtam.ai/c/sanepar) (sanepar.com.br)<br>Public utility providing treated water, sewage collection, treatment, and solid waste disposal services for all residents in Paraná. | Utilities | 🇧🇷 Curitiba | 1,893 | 1963 |
| 7 | [Sanepar Companhia de Saneamento do Paraná](https://www.tamtam.ai/c/sanepar-companhia-de-saneamento-do-parana) (sanepar.com.br)<br>Providing essential water treatment and sanitation services to the people of Paraná, with a commitment to environmental sustainability and universal access | Environmental Services | 🇧🇷 Curitiba | 1,881 | 1963 |
| 8 | [Unimed Curitiba](https://www.tamtam.ai/c/unimed-curitiba) (unimedcuritiba.com.br)<br>A leading medical cooperative providing access to various medical specialties through an extensive network of healthcare facilities and excellent member physicians | Wellness and Fitness Services | 🇧🇷 Curitiba | 1,788 | 1971 |
| 9 | [Hospital Universitário Evangélico Mackenzie](https://www.tamtam.ai/c/hospital-universitario-evangelico-mackenzie) (hospital.mackenzie.br)<br>A general and high complexity hospital that performs over a million procedures and treatments annually in various specialties | Hospitals and Health Care | 🇧🇷 Curitiba | 1,430 |  |
| 10 | [Hospital São Vicente](https://www.tamtam.ai/c/hospital-sao-vicente) (saovicentecuritiba.com.br)<br>Specializing in liver and kidney transplants, the hospital offers high-quality and humanized care in various clinical and surgical specialties, with modern facilities and advanced technology | Hospitals and Health Care | 🇧🇷 Curitiba | 1,384 | 1939 |
| 11 | [Hospital Erasto Gaertner](https://www.tamtam.ai/c/hospital-erasto-gaertner) (erastogaertner.com.br)<br>A medical institution founded in 1947 to combat cancer, providing treatment, hospitalization, and medical equipment for underprivileged cancer patients | Hospitals and Health Care | 🇧🇷 Curitiba | 1,374 | 1972 |
| 12 | [hospitalsantacruz.com](https://www.tamtam.ai/c/hospitalsantacruz-com) (rededorsaoluiz.com.br)<br>A leading private hospital in Brazil, specializing in Oncology, Cardiology, Neurology, Orthopedics, and Preventive Medicine, offering high-quality healthcare services and top-notch facilities | Hospitals and Health Care | 🇧🇷 Curitiba | 1,138 | 1966 |
| 13 | [Hospital São Marcelino Champagnat](https://www.tamtam.ai/c/hospital-sao-marcelino-champagnat) (hospitalmarcelino.com.br)<br>Our mission is to provide excellent and safe healthcare with advanced technology and compassionate care for our patients' well-being | Hospitals and Health Care | 🇧🇷 Curitiba | 1,094 | 2011 |
| 14 | [Brado Logística](https://www.tamtam.ai/c/brado-logistica) (brado.com.br)<br>Connecting production hubs to consumption centers with intelligent logistical solutions using trains and trucks, offering competitive efficiency, safety, and sustainability since 2011 | Transportation, Logistics, Supply Chain and Storage | 🇧🇷 Curitiba | 1,072 | 2011 |
| 15 | [Hospital Universitário Cajuru](https://www.tamtam.ai/c/hospital-universitario-cajuru) (hospitalcajuru.org.br)<br>A hospital and healthcare company located in Curitiba, Brazil, providing medical services at Hospital Universitário Cajuru in Cristo Rei | Hospitals and Health Care | 🇧🇷 Curitiba | 1,025 | 1958 |
| 16 | [Polícia Militar do Paraná - PMPR](https://www.tamtam.ai/c/policia-militar-do-parana-pmpr) (pmpr.pr.gov.br)<br>Law enforcement agency in Paraná, Brazil, dedicated to maintaining public order, conducting police operations, and performing civil defense activities, as mandated by federal and state laws | Law Enforcement | 🇧🇷 Curitiba | 904 | 1854 |
| 17 | [Paraná Banco S/A](https://www.tamtam.ai/c/parana-banco-s-a) (paranabanco.com.br)<br>The company specializes in consigned loans for retirees and public servants, as well as investments, aiming to bring smiles and financial solutions to their customers | Banking | 🇧🇷 Curitiba | 897 | 1979 |
| 18 | [Ligga](https://www.tamtam.ai/c/ligga-curitiba) (liggavc.com.br)<br>Leading the way in popularizing fiber access nationwide, we provide high-speed internet services through a merger of four companies, now expanding with 5G licenses | Telecommunications | 🇧🇷 Curitiba | 872 | 2022 |
| 19 | [Hospital VITA](https://www.tamtam.ai/c/hospital-vita) (hospitalvita.com.br)<br>A pioneering network of private healthcare institutions in Brazil, focused on delivering high-quality, standardized care through advanced technology and financial investments | Hospitals and Health Care | 🇧🇷 Curitiba | 854 | 1996 |
| 20 | [Grupo Potencial](https://www.tamtam.ai/c/grupo-potencial) (potencial.net.br)<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 | Oil and Gas | 🇧🇷 Curitiba | 750 | 1994 |
| 21 | [Clinipam - Clínica Paranaense de Assistência Médica](https://www.tamtam.ai/c/clinipam-clinica-paranaense-de-assistencia-medica) (gndisul.com.br)<br>Providing quality healthcare plans in Southern Brazil, focusing on technology, customer service, and employee satisfaction Award-winning for innovation and customer service excellence | Wellness and Fitness Services | 🇧🇷 Curitiba | 605 | 1983 |
| 22 | [AMERICA LATINA LOGISTICA](https://www.tamtam.ai/c/america-latina-logistica) (rumoall.com)<br>Leader in sugar logistics in Latin America, offering integrated transport, storage, and port services Turning knowledge into logistics solutions for clients, employees, and society | Truck Transportation | 🇧🇷 Curitiba | 585 |  |
| 23 | [paranaclinicas.com.br](https://www.tamtam.ai/c/paranaclinicas-com-br) (paranaclinicas.com.br)<br>Operating since 1970, this company specializes in providing excellent corporate health plans, preventive health programs, and quality of life promotion through its modern infrastructure and network of clinics | Wellness and Fitness Services | 🇧🇷 Curitiba | 545 | 1970 |
| 24 | [Banco Bari](https://www.tamtam.ai/c/banco-bari) (bancobari.com.br)<br>Empowering individuals to build healthier relationships with their finances and assets through innovative financial products and educational resources | Banking | 🇧🇷 Curitiba | 517 | 1995 |
| 25 | [Transporte Coletivo Glória](https://www.tamtam.ai/c/transporte-coletivo-gloria) (tcgloria.com.br)<br>Leading pioneers in public transportation in Curitiba since the 1950s, the unified companies continue to set the standard for innovation in the industry | Ground Passenger Transportation | 🇧🇷 Curitiba | 501 | 1957 |
| 26 | [Sicoob Sul](https://www.tamtam.ai/c/sicoob-sul) (sicoobunicoob.com.br)<br>Part of the largest credit union system in Brazil, we unite thousands of members nationwide who embrace cooperative values | Financial Services | 🇧🇷 Curitiba | 485 | 2003 |
| 27 | [Hospital das Nações](https://www.tamtam.ai/c/hospital-das-nacoes) (hospitalnacoes.com.br)<br>24/7 emergency care in orthopedics, general medicine, cardiology, and neurology Outpatient services in all specialties, imaging tests, and more | Hospitals and Health Care | 🇧🇷 Curitiba | 433 | 1985 |
| 28 | [GNDI Hospital Ônix](https://www.tamtam.ai/c/gndi-hospital-onix) (gndisul.com.br)<br>A high complexity hospital offering a wide range of medical specialties in a comfortable environment Staffed by highly qualified professionals following strict health protocols | Medical Practices | 🇧🇷 Curitiba | 399 |  |
| 29 | [Hospital Sugisawa](https://www.tamtam.ai/c/hospital-sugisawa) (hospitalsugisawa.com.br)<br>Comprehensive structure dedicated to healthcare, well-being, and safety of patients, prioritizing ethics, responsibility, and respect for human beings | Hospitals and Health Care | 🇧🇷 Curitiba | 381 | 2007 |
| 30 | [DER - Departamento de Estradas de Rodagem do Estado do Paraná](https://www.tamtam.ai/c/der-departamento-de-estradas-de-rodagem-do-estado-do-parana) (der.pr.gov.br)<br>Ensuring proper movement of people and goods within the state road network | Government Administration | 🇧🇷 Curitiba | 332 |  |

## 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 11, 2026.

## More company lists in Curitiba

- [The largest companies in Curitiba](https://www.tamtam.ai/l/largest-companies-curitiba) (518)
- [Education providers in Curitiba](https://www.tamtam.ai/l/education-companies-curitiba) (56)
- [Retail chains in Curitiba](https://www.tamtam.ai/l/retail-chains-curitiba) (54)
- [Healthcare providers in Curitiba](https://www.tamtam.ai/l/healthcare-providers-curitiba) (42)
- [Financial Services companies in Curitiba](https://www.tamtam.ai/l/financial-services-companies-curitiba) (41)
- [IT Services and IT Consulting companies in Curitiba](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-curitiba) (37)
- [Manufacturers in Curitiba](https://www.tamtam.ai/l/manufacturers-curitiba) (35)
- [Financial services firms in Curitiba](https://www.tamtam.ai/l/financial-services-firms-curitiba) (34)
- [Multinational companies in Curitiba](https://www.tamtam.ai/l/multinational-companies-curitiba) (34)
- [Companies with a mobile app in Curitiba](https://www.tamtam.ai/l/companies-with-mobile-app-curitiba) (32)
- [Retail companies in Curitiba](https://www.tamtam.ai/l/retail-companies-curitiba) (32)

## The same list elsewhere in Brazil

- [Critical infrastructure operators in Brazil](https://www.tamtam.ai/l/critical-infrastructure-operators-brazil) (1,201)
- [Critical infrastructure operators in São Paulo State](https://www.tamtam.ai/l/critical-infrastructure-operators-sao-paulo-state) (437)
- [Critical infrastructure operators in Rio de Janeiro State](https://www.tamtam.ai/l/critical-infrastructure-operators-rio-de-janeiro-state) (136)
- [Critical infrastructure operators in Minas Gerais](https://www.tamtam.ai/l/critical-infrastructure-operators-minas-gerais) (106)
- [Critical infrastructure operators in Paraná](https://www.tamtam.ai/l/critical-infrastructure-operators-parana) (85)
- [Critical infrastructure operators in Santa Catarina](https://www.tamtam.ai/l/critical-infrastructure-operators-santa-catarina) (61)
- [Critical infrastructure operators in Rio Grande do Sul](https://www.tamtam.ai/l/critical-infrastructure-operators-rio-grande-do-sul) (60)
- [Critical infrastructure operators in Federal District](https://www.tamtam.ai/l/critical-infrastructure-operators-federal-district) (51)
- [Critical infrastructure operators in Bahia](https://www.tamtam.ai/l/critical-infrastructure-operators-bahia) (37)
- [Critical infrastructure operators in Ceará](https://www.tamtam.ai/l/critical-infrastructure-operators-ceara) (37)
- [Critical infrastructure operators in São Paulo](https://www.tamtam.ai/l/critical-infrastructure-operators-sao-paulo) (251)
- [Critical infrastructure operators in Rio de Janeiro](https://www.tamtam.ai/l/critical-infrastructure-operators-rio-de-janeiro) (107)
- [Critical infrastructure operators in Belo Horizonte](https://www.tamtam.ai/l/critical-infrastructure-operators-belo-horizonte) (46)
- [Critical infrastructure operators in Brasília](https://www.tamtam.ai/l/critical-infrastructure-operators-brasilia) (42)
- [Critical infrastructure operators in Fortaleza](https://www.tamtam.ai/l/critical-infrastructure-operators-fortaleza) (30)
- [Critical infrastructure operators in Porto Alegre](https://www.tamtam.ai/l/critical-infrastructure-operators-porto-alegre) (27)
- [Critical infrastructure operators in Salvador](https://www.tamtam.ai/l/critical-infrastructure-operators-salvador) (27)

---

Source: https://www.tamtam.ai/l/critical-infrastructure-operators-curitiba