These are large and mid-sized Italian telecommunications companies. They provide a range of services from fixed, mobile, and digital solutions to network infrastructure development, cybersecurity, and IoT integration. Among them, TIM offers extensive fixed, mobile, and digital services, while wind tre focuses on connections, energy, and insurance. Fastweb promotes digital transformation through ultra-broadband networks, and Open Fiber specializes in building fiber optic networks.
A notable pattern is the concentration of headquarters in Milano, with eight of the largest companies based there. Roma is also a significant hub. Most of these firms were founded in the mid-20th century, such as Sielte Spa (1925) and Sirti S.p.A. (1921), though newer players like iliad (2017) and Open Fiber (2016) have emerged.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
TIMgruppotim.it
Provides fixed, mobile, and digital services including Cloud, IoT, and Cybersecurity, building and sharing network infrastructure in Italy and Brazil. |
22,417 | |||
| 2 |
wind trewindtregroup.it
Provides connections, energy, and insurance services for families and businesses, supporting digital and sustainable transformation with telecommunications, broadband, cybersecurity, and cloud solutions. |
7,136 | |||
| 3 |
Fastwebfastweb.it
A leading Italian telecommunications operator promoting digital transformation for a connected, inclusive, and sustainable future, investing in ultra-broadband networks and innovative services |
4,033 | |||
| 4 |
Sielte Spasielte.it
A team of over 2000 professionals across Italy who install, test, manage, and engineer solutions in Telecom, Transportation, and Technology sectors with professionalism and customer trust |
3,019 | |||
| 5 |
Sirti S.p.A.sirti.it
A leading Italian technology company specializing in network infrastructures, telecom system integration, with international presence and projects in multiple sectors worldwide |
2,847 | |||
| 6 |
Fastweb + Vodafonefastwebvodafone.it
Integration of fixed and mobile networks to provide innovative, competitive digital services for families, businesses, and national digital transformation. |
2,367 | |||
| 7 |
Open Fiberopenfiber.it
Open Fiber is an Italian company building ultra-fast fiber optic networks to bridge the digital divide and provide innovative digital services for all citizens |
2,085 | |||
| 8 | 1,855 | ||||
| 9 |
SITE SpAsitespa.it
The company provides System Integration services for telecommunications, railway, and energy infrastructures, as well as develops IoT and signaling solutions |
1,627 | |||
| 10 | 1,415 | ||||
| 11 |
Italtelitaltel.com
The company provides communication technology solutions, integrates traditional and new technologies, offers managed services, and focuses on sustainability and inclusivity |
1,398 | |||
| 12 |
MTmilanoteleport.com
Specializing in alternative telecommunication solutions, including VSAT, 4G/5G, NOC services, cybersecurity, and IoT integration, with on-site and remote support available 24/7 |
1,384 | |||
| 13 |
TIM Enterprisetimenterprise.it
TIM BUSINESS offers integrated, modular, and flexible telecommunications solutions for professionals, businesses, and enterprises in Italy, with quality service and customized options |
1,359 | |||
| 14 |
Tessellistessellis.it
Tessellis is a Smart Telco born from the merger of two telecom leaders, offering extensive fiber coverage in Italy and focusing on value-added services and innovation |
1,162 | |||
| 15 |
Tiscalicasa.tiscali.it
A leading Italian telecommunications company offers fixed and mobile services with a focus on ultra-broadband technologies, aiming to provide equitable network access to millions of customers |
1,149 | |||
| 16 |
Sparkletisparkle.com
Global service provider offering capacity, IP, SD-WAN, colocation, IoT connectivity, roaming, voice solutions to national/international Carriers, OTTs, ISPs, Enterprises, with advanced fiber network |
1,014 | |||
| 17 |
Gruppo Distribuzione SPAgruppodistribuzione.it
A multinational company founded in 1998 with around 4,000 employees, operating in telco, media, energy, banking, and public sector markets across 3 countries Specializing in outsourcing services |
962 | |||
| 18 |
Valtellina S.p.A.valtellinaspa.it
The company is a leading Italian operator in building and maintaining technological infrastructures for telecommunications, energy, lighting, transport, offering end-to-end services and digital solutions |
931 | |||
| 19 | 914 | ||||
| 20 | 
TRANSCOM WORLDWIDE S.P.A.linkedin.com
Provider of call center services, consulting, market research, and marketing support activities |
861 | |||
| 21 |
Retelitretelit.it
Italian leader in digital transformation projects, offering integrated ICT telco and digitalization services with comprehensive fiber-optic network and nationwide Data Centers |
837 | |||
| 22 |
Circet Italia S.p.a.circet.it
CEIT operates in telecommunications, energy, and transportation systems, offering design, installation, and maintenance services for large infrastructures, with a strong focus on quality and client satisfaction |
783 | |||
| 23 |
SIAE MICROELETTRONICAsiaemic.com
Provides wireless transmission equipment including microwave and millimeter wave radios, cell site gateways, and network management systems globally. |
766 | |||
| 24 |
Telebit SpAtelebit.it
A telecommunications group specializing in digital solutions, e-mobility, and network services with over 1200 employees and offices in Italy and Brazil |
627 | |||
| 25 |
SYSTEM HOUSE SRLsystemhouse.it
An IT company established in 1981, offering a wide range of services such as Call Centers, Telecommunications, Renewable Energy, and Technical Support nationwide |
533 | |||
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 |
IRIDEOS S.p.A.retelit.it
The company supports digital transformation through fiber optics, cloud, data centers, IT services, and security solutions, forming Italy's largest B2B ICT player |
480 | |||
| 27 |
Buongiornobuongiorno.com
A global leader in m-commerce, enhancing digital experiences with mobile payments, apps, and services, striving to create value for customers |
466 | |||
| 28 |
Telecom Italia Labtim.it
Respectful replacement parts for wise handling of challenges, indifference to hypocrisy, and fake smiles Unique approach to customer service |
459 | |||
| 29 |
COLLIGO S.p.A.colligo.it
The company, established in 2005, provides integrated customer relationship management services to various industries through multichannel Contact Center solutions, focusing on sustainable innovation and ethical corporate governance |
384 | |||
| 30 |
Koiné Srlkoine.ve.it
A reliable partner in outsourcing services, Koiné specializes in managing administrative processes and industry supervision to improve client activities |
382 | |||
| 31 |
Soleto SpAsoletospa.it
Since 1992, we specialize in designing, installing, and maintaining telecommunications, electrical, and energy efficiency systems nationwide for industrial, commercial, civil, and residential sectors |
372 | |||
| 32 |
Infratel Italiainfratelitalia.it
Infrastructure and Telecommunications company in Italy working on digital divide, providing advanced connectivity services for citizens, businesses, and public administrations |
360 | |||
| 33 |
Piramis Grouppiramisgroup.com
A telecommunications company with a strong presence in Italy, providing innovative solutions and excellent customer service in partnership with Vodafone |
357 | |||
| 34 |
Il Pesciolino Rossodelya.it
A holding company managing its financial and real estate assets, controlling its subsidiaries, and overseeing its investment portfolio |
340 | |||
| 35 |
INWIT S.p.A.inwit.it
Leading telco infrastructure provider in Italy, operating over 23,000 assets for national operators, ensuring optimal wireless services with a focus on 5G technology |
336 | |||
| 36 |
Linkempeople.linkem.com
A leading Italian telecommunications operator specializing in ultra-wideband wireless services for families, businesses, and public administrations, with a focus on 5G network transition |
314 | |||
| 37 |
Siat Installazioni S.p.A.siatinstallazioni.com
With over 40 years of experience, we specialize in telecommunications, broadcasting, and energy systems, focusing on customer satisfaction, professionalism, innovation, and flexibility |
312 | |||
| 38 | 305 | ||||
| 39 |
B810 Groupb810group.it
Offers complete, cutting-edge IoT solutions, serving as a technology partner for end-to-end implementation across smart city, mobility, electronics manufacturing, and software sectors. |
294 | |||
| 40 |
Vianovavianova.it
Providing integrated voice and data telecom services with quality monitoring, cost optimization, and simplified management for business growth. |
277 | |||
| 41 |
4U Italia srl4uitalia.it
4U Italia srl specializes in Contact Center services, outsourcing to businesses, Business Process Outsourcing, Customer Relationship Management, and outbound activities |
264 | |||
| 42 |
Enterretelit.it
Italian ICT hub providing cloud, data center, fiber optic, security, and innovative solutions for businesses of all sizes, built on a strong technology platform |
258 | |||
| 43 | 250 | ||||
| 44 |
Alpitel S.p.A.alpitel.it
Connecting people, systems, structures, and objects through integrated network and telecommunications systems, offering innovative solutions tailored to client needs |
245 | |||
| 45 |
Comtelcomtelitalia.it
An Italian ICT Solution Provider with over 200 employees, offering infrastructure solutions, unified communication, virtual PBX platforms, and global services |
222 | |||
| 46 |
Alpha Telecomalphatelecom.com
A leading telecommunications company with a global network, offering high-quality communication services with innovative products, strong brand loyalty, and community outreach |
189 | |||
| 47 |
Page Europa - Zenita Grouppageuropa.it
Specializes in integrating advanced military and commercial technologies for defense, energy, and critical infrastructure sectors with tailored, reliable solutions. |
183 | |||
| 48 |
TELECOM 1linkedin.com
A telecommunications company providing a range of services and solutions to meet the communication needs of organizations and individuals |
177 | |||
| 49 |
Cellnex Italiacellnex.com
A telecommunications company based in Italy, specializing in providing advanced communication solutions and services to its customers |
176 | |||
| 50 |
Seven Consulting Srlsevenconsulting.eu
A leading company specializing in planning, creating, and managing sales networks, with a strong presence in the telecommunications sector |
176 | |||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 Italy
- The largest companies in Italy 10,708
- Multinational companies in Italy 2,339
- Manufacturers in Italy 1,879
- Companies with in-house R&D in Italy 1,418
- Retail chains in Italy 1,320
- Family-owned companies in Italy 803
- Consumer goods companies in Italy 783
- Hardware manufacturers in Italy 765
- Food and Beverage Manufacturing companies in Italy 671
- Critical infrastructure operators in Italy 622
- Retail Apparel and Fashion companies in Italy 608
- Financial services firms in Italy 588
- Food and beverage companies in Italy 587
- Corporate groups and holding companies in Italy 561
- IT services companies in Italy 499
- E-commerce companies in Italy 495
- Luxury brands in Italy 474
- Software Development companies in Italy 456
- IT Services and IT Consulting companies in Italy 440
- Transportation, Logistics, Supply Chain and Storage companies in Italy 409
- Professional services firms in Italy 398
- Contract manufacturers in Italy 395
- Companies with a mobile app in Italy 394
- Public sector organisations in Italy 392