Company lists · Data refreshed September 2026
Top 25 Infrastructure companies based in Italy
RevenueBase identified 2,225 infrastructure companies headquartered in Italy as of September 2026 and tracks 113,431 professional contacts across them, including 33,527 with verified work emails. Roma is the largest hub.
This list covers infrastructure companies headquartered in Italy, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 15, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest infrastructure companies based in Italy
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 34,095 contacts → | ||||
Strong evidence “Saipem is a global leader in the engineering and construction of major projects for the energy and infrastructure sectors, both offshore and onshore.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 2 | 15,726 contacts → | ||||
Indirect evidence “We are a multinational company reshaping the future of energy and one of the world’s leading integrated electricity operators.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 3 | 5,966 contacts → | ||||
Strong evidence “Webuild is a global leader in the construction of large, complex infrastructure, with a focus on sustainable mobility, hydropower, water treatment and supply, and green buildings.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 4 | 3,358 contacts → | ||||
Strong evidence “Infrastructure, passenger transport, logistics, urban regeneration.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,944 contacts → | ||||
Indirect evidence “The Hera Group is the first Italian coalescence of municipally owned companies that (adopting a multi-business approach oriented to the creation of shared value for all…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 6 | 2,701 contacts → | ||||
Indirect evidence “At Italferr – a company belonging to the Italian State Railways Group Ferrovie dello Stato Italiane – we have built up a 30 year long experience at the forefront of cutting-edge…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,363 contacts → | ||||
Indirect evidence “Autostrade per l’Italia è nei primi posti in Europa tra i concessionari di costruzione e gestione di autostrade a pedaggio.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,088 contacts → | ||||
Strong evidence “Salini Impregilo is an industrial Group specialized in the construction of large works and large complex infrastructure for the sustainable mobility, clean hydro energy, clean…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,998 contacts → | ||||
Strong evidence “ASTALDI is an international construction group with a strong presence and a leading position in Italy; it constructs large and technologically complex infrastructures, acting…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,932 contacts → | ||||
Indirect evidence “Italgas è una Network Tech Company, leader nei settori della distribuzione del gas, dei servizi idrici, dell’efficienza energetica e dell’IT.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 11 | 859 contacts → | ||||
Indirect evidence “Specialisation, globalisation, capacity and flexibility are all keys to the success of Rizzani de Eccher.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 12 | 749 contacts → | ||||
Indirect evidence “Management.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 13 | 747 contacts → | ||||
Indirect evidence “vimental has over 40 years experience in the construction, maintenance and upgrading of roads, motorways, bridges, viaducts, service areas and airports.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 14 | 668 contacts → | ||||
Indirect evidence “Circet Italia opera da oltre 30 anni nel mercato di sistemi e reti di telecomunicazione, energia e trasporti con servizi di progettazione, installazione e manutenzione di grandi…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 15 | 648 contacts → | ||||
Indirect evidence “DBA Group is a holding company consisting of enterprises operating in Civil Engineering, Plant Design, Architecture, Project Management and specialised in the development of…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 16 | 530 contacts → | ||||
Indirect evidence “Unareti è la società unica per i servizi a rete che gestisce in modo integrato e capillare la distribuzione di energia elettrica e gas.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 17 | 530 contacts → | ||||
Indirect evidence “The ICM Group includes industrial companies, mainly operating in the construction sector.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 18 | 437 contacts → | ||||
Indirect evidence “Since 1919 we have been designing, installing, operating and maintaining complex technological systems for public and private buildings: hospitals, business centers, malls…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 19 | 383 contacts → | ||||
Indirect evidence “2i Rete Gas è una realtà industriale che si occupa della distribuzione del gas in oltre 2 mila comuni presenti sull’intero territorio nazionale.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 20 | 368 contacts → | ||||
Indirect evidence “IRETI è la società del Gruppo Iren che gestisce in modo integrato e capillare sul territorio nazionale la distribuzione di energia elettrica, gas e acqua, cercando ogni giorno con…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 21 | 364 contacts → | ||||
Indirect evidence “Manelli Impresa S.p.A.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 22 | 300 contacts → | ||||
Indirect evidence “CEBAT SpA is a leader in utility networks’ development and services.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 23 | 299 contacts → | ||||
Strong evidence “Sina is the engineering company of the ASTM Group, the second largest motorway operator in the world and a global player in major infrastructure works.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 24 | 291 contacts → | ||||
Indirect evidence “Toto Costruzioni Generali vanta oltre sessant'anni di esperienza nel campo delle costruzioni, con una specializzazione nella realizzazione di infrastrutture strategiche per la…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 25 | 286 contacts → | ||||
Strong evidence “Landi Renzo is the global leader in the natural gas, biomethane and hydrogen sustainable mobility and infrastructure sector.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: infrastructure companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names infrastructure companies.
- Partial evidence
- Its own public description names part of infrastructure companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name infrastructure companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 2,225 infrastructure companies based in Italy
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Infrastructure companies based in Italy at a glance
As of Sep 15, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Italy, so it is reported there. Company counts and contact totals on this page are exact for Italy, over 2,225 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among infrastructure companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Italy whose own description of what they do matches “infrastructure companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names infrastructure companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among infrastructure companies, and records with no verified work email. Companies headquartered outside Italy are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 33,527 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 15, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Infrastructure companies by metro
- Infrastructure companies in Roma156
- Infrastructure companies in Napoli49
- Infrastructure companies in Rome37
- Infrastructure companies in Milano32
- Infrastructure companies in Milano Mi32
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names infrastructure companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many infrastructure companies are there based in Italy?
RevenueBase identified 2,225 infrastructure companies headquartered in Italy as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Saipem, headquartered in Milan, tops this list with the largest team on record.
Which city has the most infrastructure companies?
Roma leads with 156 headquartered companies, followed by Napoli (49) and Rome (37).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 33,527 verified decision-maker contacts tracked across these 2,225 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 15, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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