The 25 largest Telecommunications companies in Portugal (2026 list)

This selection of telecommunications companies in Portugal includes large established players and younger firms. Altice Portugal and NOS SGPS, both based in Lisbon, are prominent operators offering a range of fixed, mobile, and multimedia services. MEO partners with businesses for innovation, while Altice Labs, located in Aveiro, develops innovative products for ICT markets. Newer entrants like DIGI Portugal, founded in 2021, and NOWO Portugal, founded in 2016, also feature, focusing on diverse communication services.

The data shows a strong concentration of telecommunications companies in Lisbon, with Altice Portugal, MEO, NOS SGPS, Portugal Telecom, DIGI Portugal, ONI, TELCABO S.A., and NOWO Portugal all headquartered in the capital. This indicates a central hub for the telecommunications industry within Portugal, encompassing both major operators and specialized service providers.

#	Company	Industry	Headquarters	Employees	Founded
1	Vivo (Telefônica Brasil)vivo.com.br Largest Brazilian telecommunications provider. Offers comprehensive fixed, mobile, and digital services including fiber optic, 4G, 4.5G, and IPTV. Focuses on digital inclusion and education.	Telecommunications	🇵🇹 São Paulo	39,219	1998
2	Altice Portugal altice.pt A global telecommunications and multimedia operator in Portugal, offering fixed line, mobile, multimedia, data, and business solutions to meet digital consumer needs	Telecommunications	🇵🇹 Lisbon	5,800	n/a
3	MEO meo.pt Partnering with businesses to innovate, overcome challenges, and enhance competitiveness, supporting economic growth across all sectors and locations.	Telecommunications	🇵🇹 Lisbon	5,389	n/a
4	NOS SGPS nos.pt A forward-thinking organization providing cutting-edge fixed and mobile solutions for television, internet, voice, and data, leading in cinema distribution in Portugal	Telecommunications	🇵🇹 Lisbon	4,014	2014
5	Portugal Telecom telecom.pt A telecommunications and multimedia operator in Portugal, focused on innovation and customer experience, now part of a multinational company	Telecommunications	🇵🇹 Lisbon	2,823	n/a
6	Altice Labs alticelabs.com This company develops innovative products and services for ICT markets, collaborates with universities and research institutes, and focuses on technological innovation to improve people's lives	Telecommunications	🇵🇹 Aveiro	882	n/a
7	DIGI Portugal digi.pt Leading telecommunications company in Europe offering mobile, internet, fixed-line, and fiber optic services across various growing markets with over 22 million customers	Telecommunications	🇵🇹 Lisbon	830	2021
8	Optimus nos.pt A telecommunications company launched in 1998 offering a range of mobile and fixed solutions using advanced technologies, merging to form a new, customer-oriented entity	Telecommunications	🇵🇹 Matosinhos	724	1998
9	ONI oni.pt Provider of convergent communications, cloud & IT solutions for businesses, offering management services and digital transformation Part of Gigas Group	Telecommunications	🇵🇹 Lisbon	536	1998
10	Visabeira Global SGPS, SA visabeiraglobal.com The company operates in telecommunications, energy, technology, and construction, offering a wide range of services from network engineering to building maintenance	Telecommunications	🇵🇹 Viseu	463	n/a
11	TELCABO S.A.telcabo.pt A global provider of telecommunications and energy services with a focus on designing, implementing, and maintaining state-of-the-art networks for demanding customers worldwide	Telecommunications	🇵🇹 Lisbon	366	1986
12	Sonaecom sonae.com A diversified portfolio including telecommunications, media, and software & systems integration companies, specializing in mobile, fixed communications, media, and technology services	Telecommunications	🇵🇹 Maia	306	n/a
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13	NOWO Portugal nowo.pt NOWO offers innovative communication services with freedom of choice, transparency, fair pricing, and customer respect, breaking away from traditional package offerings in the market	Telecommunications	🇵🇹 Lisbon	169	2016
14	Comunicações IN inaciomeo.wixsite.com Founded in 2014, this company based in Lourinhã, Portugal works with major telecommunication operators to offer tailored solutions for residential and business customers	Telecommunications	🇵🇹 Lourinhã	169	2014
15	Telemax telemax.pt A Portuguese company specializing in Electronic Security, Radiocommunications, and Broadcasting, offering solutions for access control, vehicle control, and traffic barriers	Telecommunications	🇵🇹 Porto	168	1990
16	Thales em Portugal thalesgroup.com A Portuguese Competence Centre of a global group, specialized in designing and deploying solutions for Defence, Security, and Transportation markets worldwide	Telecommunications	🇵🇹 Oeiras	164	n/a
17	MMCI mmci.pt A leading distributor of NOS, providing telecommunications and multimedia products and services, with a focus on technology, retail, and sales	Telecommunications	🇵🇹 Trofa	161	2008
18	Real Life Technologies reallife.pt A multinational ICT service provider offering a wide range of services and capabilities in information and communications technology, focusing on customer success and partnerships with leading tech companies	Telecommunications	🇵🇹 Algés	151	2008
19	GROUPFIX N groupfix.pt Specializing in telecommunications services, the company offers a complete range of services from customer acquisition to infrastructure maintenance, with over 40 years of experience	Telecommunications	🇵🇹 Braga	109	n/a
20	Netceed Portugal etcp.pt A Portuguese company with 25 years of experience supplying passive materials for telecommunications networks, specializing in fiber optic infrastructure and connectivity	Telecommunications	🇵🇹 Póvoa de Santa Iria	104	2015
21	Meo Recrutamento recrutamentocomercialmeo.pt Innovative telecommunications brand in Portugal offering mobile TV, high-speed internet, convergent services, and cutting-edge technology with a focus on customer satisfaction and quality	Telecommunications	🇵🇹 Lisbon	90	1991
22	EAE eaenetworks.com Provider of integrated telecommunication services for Energy, Oil & Gas, Aviation, Power, Transportation, and related industries with custom solutions	Telecommunications	🇵🇹 Ajah	90	2018
23	CBE - Projects and Engineering in Telecommunications cbe.pt A global service provider and integrator of fixed and mobile telecommunications technologies, offering innovative solutions with a focus on customer satisfaction	Telecommunications	🇵🇹 Vialonga	61	1998
24	Globaltronic - Electrónica e Telecomunicações S.A.globaltronic.pt A company specializing in electronic equipment development, manufacturing and sales, providing innovative smart lighting control and Smart City solutions through Custom Engineering services	Telecommunications	🇵🇹 Agueda	17	2002
25	Império Global Telecomunicações LDA imperioglobal.com A leading telecommunications services company with unique management control tools, serving major European operators with customized solutions to add value to their businesses	Telecommunications	🇵🇹 Aveiro	15	2017

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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 12, 2026.

The 25 largest Telecommunications companies in Portugal

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