Company lists · Data refreshed September 2026

Top 15 Infrastructure companies based in Rome, Italy

RevenueBase identified 37 infrastructure companies headquartered in Rome, Italy as of September 2026 and tracks 18,135 professional contacts across them, including 6,898 with verified work emails. Roma is the largest hub.

This list covers infrastructure companies headquartered in Rome, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 15, 2026 86% judged on-target in blind review
37Companies
18,135Contacts tracked
6,898Verified emails
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The 15 largest infrastructure companies based in Rome, Italy

Ranked by team size
Top 15 of 37 infrastructure companies based in Rome, Italy, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceRome, ItalyHQ checked Sep 15, 202610001+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, 2026
2Indirect evidenceRome, ItalyHQ checked Sep 15, 20261,001-5,000749 contacts →

Indirect evidence

“Management.”

Source: RevenueBase Database · checked Sep 15, 2026
3Indirect evidenceRome, ItalyHQ checked Sep 15, 202610001+132 contacts →

Indirect evidence

“We are bringing the world together with a new rhythm.”

Source: RevenueBase Database · checked Sep 15, 2026
4Indirect evidenceRome, ItalyHQ checked Sep 15, 202651-200107 contacts →

Indirect evidence

“Eteria nasce nel 2021 dall’unione strategica tra due dei principali gruppi industriali italiani, Caltagirone e Gavio, attraverso le rispettive società Vianini Lavori e Itinera.”

Source: RevenueBase Database · checked Sep 15, 2026
5Indirect evidenceRome, ItalyHQ checked Sep 15, 202651-20095 contacts →

Indirect evidence

“The De Sanctis Group has been active for more than 80 years in the public and private works construction sector.”

Source: RevenueBase Database · checked Sep 15, 2026
6Indirect evidenceRome, ItalyHQ checked Sep 15, 2026201-50082 contacts →

Indirect evidence

“ISOLFIN is an industrial holding company which operates in the services sector for the major global petrochemicals, shipbuilding and energy groups.”

Source: RevenueBase Database · checked Sep 15, 2026
7Indirect evidenceRome, ItalyHQ checked Sep 15, 202651-20048 contacts →

Indirect evidence

“Ingegneria per grandi infrastrutture di trasporto.”

Source: RevenueBase Database · checked Sep 15, 2026
8Indirect evidenceRome, ItalyHQ checked Sep 15, 202651-20042 contacts →

Indirect evidence

“Donati SPA è una società di progettazioni, costruzioni e partecipazioni che attua progetti in Italia e all’estero, in proprio, in appalto ed in concessione, nel campo stradale…”

Source: RevenueBase Database · checked Sep 15, 2026
9Indirect evidenceRome, ItalyHQ checked Sep 15, 202651-20037 contacts →

Indirect evidence

“C.I.EL.”

Source: RevenueBase Database · checked Sep 15, 2026
10Indirect evidenceRome, ItalyHQ checked Sep 15, 202651-20033 contacts →

Indirect evidence

“Ferraro SpA è un’impresa edile specializzata nella realizzazione di infrastrutture e grandi opere architettoniche.”

Source: RevenueBase Database · checked Sep 15, 2026
11Strong evidenceRome, ItalyHQ checked Sep 15, 202651-20025 contacts →

Strong evidence

“Genera Group® is an international investment holding company with expertise in the fields of energy and process efficiency, renewable energy production and green infrastructures.”

Source: RevenueBase Database · checked Sep 15, 2026
12Strong evidenceRome, ItalyHQ checked Sep 15, 202611-5013 contacts →

Strong evidence

“Byom, founded in 2009, is an advisory company that supports Companies and Investment Funds in the industrial, energy and infrastructure markets.”

Source: RevenueBase Database · checked Sep 15, 2026
13Indirect evidenceRome, ItalyHQ checked Sep 15, 202611-506 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 15, 2026
14Indirect evidenceRome, ItalyHQ checked Sep 15, 202611-503 contacts →

Indirect evidence

“La VAMS Ingegneria è impegnata fin dal 1974 (anno di costituzione) nel settore della ingegneria delle grandi infrastrutture ed ha acquisito una qualificata esperienza…”

Source: RevenueBase Database · checked Sep 15, 2026
15Indirect evidenceRome, ItalyHQ checked Sep 15, 20261-101 contacts →

Indirect evidence

“Nata nell’ anno 2014 come società di capitale specializzata nel commercio di macchinari per l’industria in genere e per l’edilizia, ha visto un sempre più positivo trend di…”

Source: RevenueBase Database · checked Sep 15, 2026

Showing 15 of 37 infrastructure companies based in Rome, Italy

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Infrastructure companies based in Rome, Italy at a glance

As of Sep 15, 2026
38.0%Verified-email coverage
490.1Average contacts per company
11-50Median size (employees)
421.6%Largest-city concentration · Roma
Sep 15, 2026Page data refreshed

Companies by employee count

1-10
5
11-50
16
51-200
9
201-500
2
501-1,000
2
1,001-5,000
1
10001+
2

Email recency for this list is measured across the whole Italy list rather than for Rome, so it is reported there. Company counts and contact totals on this page are exact for Rome, over 37 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 Rome, 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 Rome 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, 6,898 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 in Italy

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 Rome, Italy?

RevenueBase identified 37 infrastructure companies headquartered in Rome, 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?

Enel Group, headquartered in Rome, 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 6,898 verified decision-maker contacts tracked across these 37 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.