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The 45 largest Telecommunications companies in São Paulo

Tamtam tracks 45 Telecommunications companies headquartered in São Paulo. This list ranks all of them by number of employees on LinkedIn, led by Claro Brasil, Icomon Tecnologia Ltda and NET Oficial. Their median headcount is 556. Half of them were founded in 2005 or later.

🇧🇷 São Paulo45 companiesUpdated Oct 9, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Claro Brasilclaro.com.br

A leading provider of connectivity infrastructure, offering innovative entertainment, finance, and industrial solutions with a focus on sustainability and social impact

Telecommunications 🇧🇷 São Paulo 43,065 2003
2
Icomon Tecnologia Ltdaicomontecnologia.com.br

Specializing in technology and telecommunications for over 30 years, serving major operators in São Paulo with a focus on maximizing processes and implementing cutting-edge solutions

Telecommunications 🇧🇷 São Paulo 6,829 1989
3
NET Oficialclaro.com.br

A leading telecommunications provider in Brazil, offering TV, 45G, and broadband services, in partnership with Claro Brasil for a seamless customer experience

Telecommunications 🇧🇷 São Paulo 6,100 n/a
4
Alloha Fibraalloha.com

Leading independent fiber optic company providing connectivity solutions across Brazil for consumers and businesses, focused on digital inclusion and social development.

Telecommunications 🇧🇷 São Paulo 5,084 n/a
5
Vikstar Contact Centervikstar.com.br

Leading Brazilian contact center with over 5,000 employees in São Paulo and Piauí, specializing in telecommunications market solutions and customized program development

Telecommunications 🇧🇷 São Paulo 4,299 2006
6
Nextel Brasilclaro.com.br

Started in 1997, then acquired by Claro in 2019. Now operates as Claro nxt, providing an enhanced experience to customers in Brazil.

Telecommunications 🇧🇷 São Paulo 3,571 1997
7
Procisa do Brasilprocisa.com.br

A Mexican telecommunications company part of Grupo CARSO, operating in Brazil, Mexico, Chile, Ecuador, and Argentina Present in multiple states in Brazil

Telecommunications 🇧🇷 São Paulo 3,416 2006
8
Veroquerovero.com.br

Brazilian telecommunications company providing quality service in over 450 cities across Minas Gerais, Center-West, South and Southeast regions.

Telecommunications 🇧🇷 São Paulo 3,278 2019
9
V.talvtal.com

Global provider of end-to-end digital infrastructure solutions with the largest neutral fiber optic network in Brazil, offering connectivity and infrastructure services worldwide

Telecommunications 🇧🇷 São Paulo 2,120 n/a
10
VIVO Empresasvivointerior.com.br

A telecom company in Sao Paulo offering tailored solutions with the best coverage, products, and services to simplify processes and reduce costs for clients

Telecommunications 🇧🇷 São Paulo 1,826 2003
11
Alares Internetalaresinternet.com.br

A telecommunications business offering broadband internet, fiber optics, TV, and landline services across multiple states in Brazil, with a focus on growth and customer satisfaction

Telecommunications 🇧🇷 São Paulo 1,675 n/a
12
Liderança Cobranças Inteligenteseuemdia.com.br

With over 23 years of experience, the company specializes in active debt collection, both internally and nationally, focusing on high efficiency and excellence in portfolio recovery

Telecommunications 🇧🇷 São Paulo 1,624 1988
13
TLPtlpservicos.com.br

A leading telecommunications provider with over 26 years of experience, offering comprehensive solutions for clients in Brazil with a focus on quality and cost-effective services

Telecommunications 🇧🇷 São Paulo 1,595 1997
14
VOXLINE Contact Centervoxline.com.br

With a unique management model and cutting-edge technology, this contact center converts contacts into opportunities, recognized as one of the best in the Brazilian market

Telecommunications 🇧🇷 São Paulo 1,356 n/a
15
Líder Telecom Ltda.lidertel.com.br

A provider of technical and operational services for corporate data, video, and sound networks, specializing in wireless, radio, and physical cable technologies

Telecommunications 🇧🇷 São Paulo 1,310 n/a
16
Brasil TecParbrasiltecpar.com.br

A group in Brazil focused on consolidating the Internet, Technology, and Telecom market with over 25 years of experience and achievements

Telecommunications 🇧🇷 São Paulo 1,214 n/a
17
EGS- Ericsson Gestão e Serviços.egs.com.br

A network rollout and operation plant outsourcing group with regional offices across Brazil, established as a subsidiary of Ericsson in 2004

Telecommunications 🇧🇷 São Paulo 1,074 2004
18
Editora Abriltva.com.br

Specializes in the editorial market, focusing on content creation and distribution A reputable player in the publishing industry with a strong presence

Telecommunications 🇧🇷 São Paulo 1,027 n/a
19
Ondacom Serviços de Telecomunicaçõesondacom.com

Global telecommunications infrastructure leader specializing in integrated solutions, driving market growth and expansion worldwide

Telecommunications 🇧🇷 São Paulo 928 2015
20
Mundivox Communicationsmundivox.com

With over 20 years in the telecommunications market, this company offers integrated voice and data communication solutions for corporate clients across multiple cities, prioritizing customer relationships

Telecommunications 🇧🇷 São Paulo 831 1999
21
RM Telecomlinkedin.com

Specializing in telecommunications services, RM Telecom provides a wide range of solutions to meet the communication needs of individuals and businesses

Telecommunications 🇧🇷 São Paulo 788 n/a
22
Huawei Brasilhuawei.com

Global leader in ICT solutions, focusing on telecommunications, devices, and cloud computing Committed to creating value for telecom operators, businesses, and consumers worldwide

Telecommunications 🇧🇷 São Paulo 775 1998
23
SAMMsamm.com.br

A national telecommunications company specializing in internet access, long-distance transport links, high-capacity services, and customized telecom solutions for corporate clients

Telecommunications 🇧🇷 São Paulo 556 1999
24
CARSO INSTALAÇÕES DO BRASIL LTDA

A multinational company specializing in cable TV, phone, and internet installations, aiming to become a leader in the industry Founded in 2019 with 1000 employees

Telecommunications 🇧🇷 São Paulo 500 2019
25
Alpitel Brasilalpitelbrasil.com.br

Specializing in energy and telecommunications, this company brings Italian expertise to Brazil with project management, technical coordination, and nationwide operational capabilities

Telecommunications 🇧🇷 São Paulo 470 2013
26
Winitywinity.com.br

A provider of wireless infrastructure, mobile coverage solutions, and new connectivity technologies for telecommunications sector, focusing on expanding and enhancing connectivity

Telecommunications 🇧🇷 São Paulo 424 n/a
27
Surfsurf.com.br

The company aims to revolutionize the lives of underserved Brazilians in the telecom and financial sectors by offering fair, transparent products through partnerships

Telecommunications 🇧🇷 São Paulo 407 2008
28
Tim Celular

Tim Celular provides telecommunications services in São Paulo, Brazil, specializing in mobile communication solutions at Avenida Giovanni Gronchi 7143

Telecommunications 🇧🇷 São Paulo 400 n/a
29
Motorola Brasilmotorola.com.br

Design and manufacture mobile devices and solutions under the Moto and Motorola brands, as a subsidiary of Lenovo Group Holdings

Telecommunications 🇧🇷 São Paulo 364 n/a
30
Vikstarvikstar.com.br

Specializing in People Development, Technology Investment, and Customer Satisfaction, the Grupo Vikstar is built on these core pillars

Telecommunications 🇧🇷 São Paulo 346 n/a
31
Beecenter Soluções em Call Center LTDA

A BPO specializing in telecustomer service, with a focus on quality, expertise in technical support, retention, sales, chat and social media

Telecommunications 🇧🇷 São Paulo 315 2017
32
VIVO Empresas Commcentersoliciteumcontato.com.br

The largest exclusive reseller of a major telecommunications operator in Brazil, providing personalized service to nearly two million customers Offering solutions for digital transformation and competitive advantages

Telecommunications 🇧🇷 São Paulo 304 1999
33
GloballVox Telecomunicações e Tecnologiagloballvox.com.br

A telecommunications provider offering services such as TV, broadband, phone, structured cabling, and call center services, with a focus on continuous improvement

Telecommunications 🇧🇷 São Paulo 297 2006
34
ALCON ENGENHARIA DE SISTEMASaldaktecnologia.com.br

Leading radio communication systems integrator in Brazil with headquarters in São Paulo and branches in Curitiba, Itabira, Nova Lima, Parauapebas, and Vitória

Telecommunications 🇧🇷 São Paulo 293 1987
35
Rontan

Provider of Motorola communication solutions including radios, accessories, broadband products, and digital systems Specializes in critical communication solutions for public safety sector

Telecommunications 🇧🇷 São Paulo 208 2009
36
G8g8.net.br

Specialized in Telecommunications, providing services such as DDR, Virtual PABX, 0800, 0300, dedicated link, and Data Centers across Brazil

Telecommunications 🇧🇷 São Paulo 194 1997
37
Vogel Telecomvogeltelecom.com

Provider of high-capacity connectivity services for B2B and wholesale markets, now offering integrated solutions in Telecom and IT, including cloud and security services

Telecommunications 🇧🇷 São Paulo 177 2015
38
Vonexvonex.com.br

Leader in telecommunications innovation offering comprehensive communication solutions and services including voice, VoIP, data, and call center solutions tailored to each client's needs

Telecommunications 🇧🇷 São Paulo 161 2005
39
HIT Communicationshitcommunications.com

A multinational with a presence in Latin America offering cutting-edge technology and quality voice and data services with innovative customer support

Telecommunications 🇧🇷 São Paulo 148 1990
40
ZTE do Brasilzte.com.cn

Global leader in communication and information technology, providing innovative solutions for telecom industry in Brazil, including 5G, IoT, data centers, and more

Telecommunications 🇧🇷 São Paulo 148 1985
41
Highlinehighline.com.br

Specializing in infrastructure for cellular telecommunication, the company constructs and maintains structures for signal projection, including towers, rooftops, and indoor locations

Telecommunications 🇧🇷 São Paulo 146 2012
42
55PBX | Telecom e PABX na nuvem55pbx.com

A cloud-based phone system solution offering intelligent automated assistance, predictive dialing, CRM integration, and audio transcription for enhancing customer interactions and operations

Telecommunications 🇧🇷 São Paulo 100 2015
43
Correios Celularcorreioscelular.com.br

This page is the official channel for Correios Celular, managed by Surf Group in partnership with Correios, offering mobile services

Telecommunications 🇧🇷 São Paulo 70 2017
44
HTCOM - AN INNOVATIVE THINKING COMPANY!htcom.com.br

An independent provider offering technology solutions for Telecom, IT, Enterprise, and Mobile APP markets with a focus on customer needs and excellence

Telecommunications 🇧🇷 São Paulo 58 2002
45
flukeflu.ke

Fluke is a telco provider revolutionizing the industry by offering personalized and efficient services, making telecommunication easy, fun, and hassle-free

Telecommunications 🇧🇷 São Paulo 45 2018

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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 Oct 9, 2026.

More company lists in São Paulo

The same list elsewhere in Brazil