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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Grupo Maristagrupomarista.org.br
Positively impacting lives through education, health, and advocacy for children's rights, while fostering innovation in these sectors. |
8,524 | |||
| 2 |
Copel - Companhia Paranaense de Energiacopel.com
Operates electricity generation, transmission, and distribution, serving millions of homes, plants, and commercial establishments in Paraná, Brazil, with extensive infrastructure. |
6,890 | |||
| 3 |
Hospital Pequeno Principepequenoprincipe.org.br
Largest pediatric hospital in Brazil, providing 70% of its services to the Brazilian public healthcare system |
2,425 | |||
| 4 |
HNSG - Hospital Nossa Senhora das Graçashnsg.org.br
A leading hospital in Curitiba with cutting-edge equipment, specialized medical staff, and national recognition in surgical treatment and bone marrow transplants |
1,952 | |||
| 5 |
Irmandade da Santa Casa de Misericórdia de Curitibairmandadesantacasacuritiba.com.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 |
1,893 | |||
| 6 |
Saneparsanepar.com.br
Public utility providing treated water, sewage collection, treatment, and solid waste disposal services for all residents in Paraná. |
1,893 | |||
| 7 |
Sanepar Companhia de Saneamento do Paranásanepar.com.br
Providing essential water treatment and sanitation services to the people of Paraná, with a commitment to environmental sustainability and universal access |
1,881 | |||
| 8 |
Unimed Curitibaunimedcuritiba.com.br
A leading medical cooperative providing access to various medical specialties through an extensive network of healthcare facilities and excellent member physicians |
1,788 | |||
| 9 |
Hospital Universitário Evangélico Mackenziehospital.mackenzie.br
A general and high complexity hospital that performs over a million procedures and treatments annually in various specialties |
1,430 | |||
| 10 |
Hospital São Vicentesaovicentecuritiba.com.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 |
1,384 | |||
| 11 |
Hospital Erasto Gaertnererastogaertner.com.br
A medical institution founded in 1947 to combat cancer, providing treatment, hospitalization, and medical equipment for underprivileged cancer patients |
1,374 | |||
| 12 |
hospitalsantacruz.comrededorsaoluiz.com.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 |
1,138 | |||
| 13 |
Hospital São Marcelino Champagnathospitalmarcelino.com.br
Our mission is to provide excellent and safe healthcare with advanced technology and compassionate care for our patients' well-being |
1,094 | |||
| 14 |
Brado Logísticabrado.com.br
Connecting production hubs to consumption centers with intelligent logistical solutions using trains and trucks, offering competitive efficiency, safety, and sustainability since 2011 |
1,072 | |||
| 15 |
Hospital Universitário Cajuruhospitalcajuru.org.br
A hospital and healthcare company located in Curitiba, Brazil, providing medical services at Hospital Universitário Cajuru in Cristo Rei |
1,025 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Polícia Militar do Paraná - PMPRpmpr.pr.gov.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 |
904 | |||
| 17 |
Paraná Banco S/Aparanabanco.com.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 |
897 | |||
| 18 |
Liggaliggavc.com.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 |
872 | |||
| 19 |
Hospital VITAhospitalvita.com.br
A pioneering network of private healthcare institutions in Brazil, focused on delivering high-quality, standardized care through advanced technology and financial investments |
854 | |||
| 20 |
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 | |||
| 21 |
Clinipam - Clínica Paranaense de Assistência Médicagndisul.com.br
Providing quality healthcare plans in Southern Brazil, focusing on technology, customer service, and employee satisfaction Award-winning for innovation and customer service excellence |
605 | |||
| 22 |
AMERICA LATINA LOGISTICArumoall.com
Leader in sugar logistics in Latin America, offering integrated transport, storage, and port services Turning knowledge into logistics solutions for clients, employees, and society |
585 | |||
| 23 |
paranaclinicas.com.brparanaclinicas.com.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 |
545 | |||
| 24 |
Banco Baribancobari.com.br
Empowering individuals to build healthier relationships with their finances and assets through innovative financial products and educational resources |
517 | |||
| 25 |
Transporte Coletivo Glóriatcgloria.com.br
Leading pioneers in public transportation in Curitiba since the 1950s, the unified companies continue to set the standard for innovation in the industry |
501 | |||
| 26 |
Sicoob Sulsicoobunicoob.com.br
Part of the largest credit union system in Brazil, we unite thousands of members nationwide who embrace cooperative values |
485 | |||
| 27 |
Hospital das Naçõeshospitalnacoes.com.br
24/7 emergency care in orthopedics, general medicine, cardiology, and neurology Outpatient services in all specialties, imaging tests, and more |
433 | |||
| 28 |
GNDI Hospital Ônixgndisul.com.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 |
399 | |||
| 29 |
Hospital Sugisawahospitalsugisawa.com.br
Comprehensive structure dedicated to healthcare, well-being, and safety of patients, prioritizing ethics, responsibility, and respect for human beings |
381 | |||
| 30 |
DER - Departamento de Estradas de Rodagem do Estado do Paranáder.pr.gov.br
Ensuring proper movement of people and goods within the state road network |
332 | |||
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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 Nov 11, 2026.
More company lists in Curitiba
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- Education providers in Curitiba 56
- Retail chains in Curitiba 54
- Healthcare providers in Curitiba 42
- Financial Services companies in Curitiba 41
- IT Services and IT Consulting companies in Curitiba 37
- Manufacturers in Curitiba 35
- Financial services firms in Curitiba 34
- Multinational companies in Curitiba 34
- Companies with a mobile app in Curitiba 32
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The same list elsewhere in Brazil
- Critical infrastructure operators in Brazil 1,201
- Critical infrastructure operators in São Paulo State 437
- Critical infrastructure operators in Rio de Janeiro State 136
- Critical infrastructure operators in Minas Gerais 106
- Critical infrastructure operators in Paraná 85
- Critical infrastructure operators in Santa Catarina 61
- Critical infrastructure operators in Rio Grande do Sul 60
- Critical infrastructure operators in Federal District 51
- Critical infrastructure operators in Bahia 37
- Critical infrastructure operators in Ceará 37
- Critical infrastructure operators in São Paulo 251
- Critical infrastructure operators in Rio de Janeiro 107
- Critical infrastructure operators in Belo Horizonte 46
- Critical infrastructure operators in Brasília 42
- Critical infrastructure operators in Fortaleza 30
- Critical infrastructure operators in Porto Alegre 27
- Critical infrastructure operators in Salvador 27