This selection of large cybersecurity companies in Latin America includes major IT services and consulting firms, as well as telecommunications providers. Companies like Oi, with over 20,000 employees, focus on digital connectivity and services. Stefanini Brasil provides global IT services, while Gtd offers telecommunications solutions across several Latin American countries and Europe. Valid specializes in secure identification services, and KIO focuses on IT services.
The data shows a strong concentration of headquarters in Brazil, particularly in São Paulo, with additional significant presence in Mexico City and Rio de Janeiro. The majority of these companies were founded between the late 1950s and early 2000s, indicating established players in the region's technology sector.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 20,150 | ||||
| 2 |
Stefanini Brasilstefanini.com
A global IT services provider offering consulting, integration, solution development, BPO, outsourcing, and technology-based business solutions in over 35 countries |
12,265 | |||
| 3 |
Gtdgtdcompany.com
A telecommunications company with over 40 years of experience in Chile, Peru, Colombia, Mexico, Spain, and Italy, offering personalized services and cutting-edge technology solutions |
3,726 | |||
| 4 | 3,613 | ||||
| 5 |
Stefanini LATAMstefanini.com
Provides integrated digital transformation services including consulting, AI, cybersecurity, banking, manufacturing, and digital marketing across 41 countries. |
2,651 | |||
| 6 | 2,473 | ||||
| 7 |
Montreal Oficialmontreal.com.br
A technology company in Brazil with over 30 years of experience, specializing in developing and implementing IT solutions for businesses globally |
2,464 | |||
| 8 |
Stefanini EMEAstefanini.com
Global digital transformation accelerator with 35+ years experience offering diverse technology solutions and IT outsourcing services in 16 European countries |
2,420 | |||
| 9 |
Unifiqueunifique.com.br
Provides communication solutions: internet, TV, landline, mobile, and data center services for businesses, homes, and governments, with advanced technology and customer relationships. |
2,246 | |||
| 10 |
Stefanini North America and APACstefanini.com
A multinational company offering innovative technological solutions to help clients transform their business through digital innovation and co-creation for a better future |
1,999 | |||
| 11 |
Alestraalestra.mx
A Mexican telecommunications company providing broadband and value-added services under the brand Alestra, with a focus on quality and service excellence |
1,740 | |||
| 12 |
T-Systems do Brasilt-systems.com
Global leader in IT & Communications Technology, offering integrated solutions in Digital, SAP, Cloud, Infrastructure, and Security with focus on innovation and customer satisfaction |
1,528 | |||
| 13 |
TIVIT LATAMlatam.tivit.com
A multinational tech company in Latin America providing customized solutions in Digital Business, Cloud Solutions, Technology Platforms, and CyberSecurity for various industries |
1,490 | |||
| 14 |
Globalweb Corpglobalweb.com.br
Cloud services provider offering ERP, CRM, security, data storage, and infrastructure solutions tailored to enhance business competitiveness with modern technology services |
1,443 | |||
| 15 |
Accenture Méxicoaccenture.com
Global management consulting, technology services, and outsourcing company with over 319,000 professionals serving clients in 120+ countries Partnering to drive high-performance businesses |
1,400 | |||
| 16 |
Nava | Tech for Businessnava.com.br
A technology company passionate about people and innovation, empowering employees to create solutions for leading companies to positively impact the world |
1,374 | |||
| 17 |
Lanlink Informática Ltda.lanlink.com.br
A technology solutions provider established in 1988, dedicated to delivering quality, excellence, and reliability for business needs with long-term client relationships |
1,352 | |||
| 18 | 1,336 | ||||
| 19 |
BrBPObrbpo.com.br
Brazilian capital-backed firm specialized in interactive client relationship management through integrated technology solutions, omnichannel platforms, and diverse service offerings across 12 strategic nationwide locations |
1,332 | |||
| 20 |
Canviacanvia.com
Support digital transformation with IoT, AI, Big Data, Machine Learning, and Robotics to optimize user-centered business models and processes. |
1,325 | |||
| 21 |
Grupo ASDgrupoasd.com
Colombian company with over 40 years of experience offering BPO and IT solutions in Government, Health, Finance, Education, Industry, and Telecommunications sectors |
1,284 | |||
| 22 | 1,256 | ||||
| 23 |
T-Systems Méxicot-systems.com
A strategic partner for digital transformation, offering competitive solutions tailored to each organization's challenges and objectives through innovative infrastructure, digitization, security, and connectivity services |
1,193 | |||
| 24 |
Puntonet S.A.puntonet.ec
Ecuadorian telecommunications company providing IT strategies for clients to manage technology and gain competitive advantages with a flexible organizational structure |
1,143 | |||
| 25 |
Scitum S.A. de C.V.scitum.com.mx
Leading information security integrator, offering comprehensive consulting and managed services, with over 500 specialists across Latin America. |
1,073 | |||
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. | |||||
| 26 |
SEK Security Ecosystem Knowledgesek.io
Specialized consultancy providing continuous risk analysis and control services for large companies and organizations, with customized solutions tailored to each client's unique profile |
1,067 | |||
| 27 |
ComWare S.A.comware.com.co
Professional team in design, implementation, and management of technology solutions, supporting business development and IT infrastructure with national coverage and financial backing |
1,006 | |||
| 28 |
IFX Networksifxnetworks.com
Leading Latin America's top Managed Service Provider specializing in telecom and IT solutions, with 25 years of experience, coverage in 17 countries, 110,000 km of fiber optic, and 20 data centers |
978 | |||
| 29 |
InterOpinterop.com.br
Provides IT services including implementation, integration, monitoring, maintenance, and evolution of technology solutions for businesses of all sizes. |
936 | |||
| 30 |
NTT DATA BRASILnttdata.com
Global IT services arm of NTT with over 75,000 employees in 40+ countries Leading provider of innovative IT solutions benefiting businesses and organizations |
921 | |||
| 31 |
unico IDtechunico.io
Specializing in digital identity, we create solutions to simplify lives and boost businesses for millions of individuals and top firms in the country |
871 | |||
| 32 | 826 | ||||
| 33 |
Cesmec SA, una empresa Bureau Veritascesmec.cl
Specializing in IT/IS support, this company takes charge of providing technical assistance and solutions to ensure smooth operations |
808 | |||
| 34 |
LinkTIC S.A.Slinktic.com
A Colombian ICT leader offering innovative software development, web platforms, marketing strategies, and consulting services for over 14 years |
801 | |||
| 35 |
Service IT.service.com.br
Specializing in IT solutions and services such as outsourcing, cybersecurity, and consultation Providing monitoring and management through own operation centers in multiple countries |
751 | |||
| 36 |
Delfiadelfia.tech
A Brazilian multinational specializing in digital curation, offering continuous training to curators to identify and implement innovative solutions for digital success |
694 | |||
| 37 |
Certisigncertisign.com.br
Specializing in digital identification and security solutions for over 26 years, we provide secure and seamless digital experiences for individuals and businesses, reducing fraud and costs |
668 | |||
| 38 |
Controles Empresarialescontrolesempresariales.com
Established in 1989, we provide high-performance comprehensive IT solutions including management software, process consulting, resource management, web applications, security management, and infrastructure solutions, aiming to meet client needs |
664 | |||
| 39 |
Media Commerce Partnersmc.net.co
Telecommunications provider with 10+ years experience offering integral solutions for businesses, backed by a modern Fiber Optic network Expanding in Peru and Ecuador |
662 | |||
| 40 |
RTMrtm.net.br
Integrator hub in Brazilian financial market, providing secure technological solutions to over 700 institutions, connecting key players in the industry |
660 | |||
| 41 |
ArcelorMittal Sistemasbrasil.arcelormittal.com
Develops and integrates IT solutions, including cybersecurity, cloud platforms, and SAP projects, to support global steel manufacturing operations with industrial digital efficiency. |
657 | |||
| 42 |
BHSbhs.com.br
Specialists in delivering customized IT solutions to optimize businesses with services including IT infrastructure management, security, software development, collaboration portals, and outsourcing |
655 | |||
| 43 |
OSC Top Solutions Grouposctopsolutionsgroup.com
With over 15 years of experience, the company specializes in providing telecommunications and electronic security solutions through consultation, sales, rentals, maintenance, and cutting-edge technology implementation |
648 | |||
| 44 |
Grupo Scandascanda.com.mx
A 100% Mexican company with 20+ years of experience in the IT market, specializing in transforming technology into value for clients through 6 niche-focused companies |
643 | |||
| 45 |
Arsatarsat.com.ar
ARSAT is a national State-owned company that provides telecommunications services using a combination of terrestrial, aerial, and space infrastructures |
641 | |||
| 46 |
Grupo Datcogrupodatco.com.ar
A technology group offering integrated IT services and communications, expanding into new markets across Latin America with a focus on innovation and growth |
632 | |||
| 47 |
HS Preventhsprevent.com.br
Specializing in services and technological solutions for over a decade, they enhance profitability by offering formalization, credit risk, anti-fraud, and transactional solutions |
631 | |||
| 48 |
Skyoneskyone.solutions
A technology solutions provider focused on agility, innovation, and simplifying business processes to help companies evolve and improve customer experiences |
610 | |||
| 49 |
ATECH – NEGÓCIOS EM TECNOLOGIAS S/Aatech.com.br
Specializing in critical mission solutions and decision-making technologies with a focus on defense projects, innovative solutions, asset management, logistics, digital security, and smart connections |
609 | |||
| 50 |
ISH Tecnologiaish.com.br
A fast-growing IT firm in Brazil offering cybersecurity, cloud computing, IT infrastructure services, and a Tier III Data Center with research & development for tech solutions |
596 | |||
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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 12, 2026.
More company lists in Latin America
- The largest companies in Latin America 27,921
- Manufacturers in Latin America 3,431
- Retail chains in Latin America 3,340
- Multinational companies in Latin America 2,975
- Education providers in Latin America 2,329
- Critical infrastructure operators in Latin America 2,262
- Financial services firms in Latin America 1,653
- Healthcare providers in Latin America 1,650
- Financial Services companies in Latin America 1,521
- Companies with a mobile app in Latin America 1,507
- Retail companies in Latin America 1,379
- E-commerce companies in Latin America 1,320
- Public sector organisations in Latin America 1,301
- Food and beverage companies in Latin America 1,290
- Higher Education companies in Latin America 1,236
- Distributors and wholesalers in Latin America 1,223
- Corporate groups and holding companies in Latin America 1,216
- Companies with in-house R&D in Latin America 1,191
- IT Services and IT Consulting companies in Latin America 1,091
- Food and Beverage Services companies in Latin America 1,020
- Hospitals and Health Care companies in Latin America 995
- Government Administration companies in Latin America 958
- Construction companies in Latin America 926
- Professional services firms in Latin America 924