Company lists · Data refreshed September 2026
Top 25 Infrastructure consulting firms based in Greece
RevenueBase identified 298 infrastructure consulting firms headquartered in Greece as of September 2026 and tracks 3,326 professional contacts across them, including 906 with verified work emails and 62 with mobile numbers. Athens is the largest hub.
This list covers infrastructure consulting firms headquartered in Greece, 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 consulting firms based in Greece
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 361 | ||||
“About SALFO & Associates SALFO & Associates SA is a premier Greek Engineering & Management Consulting firm, delivering excellence through innovation, integrity, and human-centric…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 279 | ||||
“Real Consulting, is one of the leading consulting and implementation of integrated IT projects companies in Greece.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 150 | ||||
“Η «Σαμαράς & Συνεργάτες Α.Ε- Σύμβουλοι Μηχανικοί» αποτελεί, σήμερα, τη μεγαλύτερη και αρτιότερα στελεχωμένη μελετητική και συμβουλευτική εταιρεία στην Ελλάδα.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 104 | ||||
“Engineering, Constructing, Consulting and Operating company of Environmantal projects and Plants, related to Water, Waste Water, Solid Waste and Energy from Renewable sources.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 94 | ||||
“Ballian Techniki provides design, construction and technical consulting services for clients in the private sector, for over 4 decades.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 65 | ||||
“NOISIS S.A.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 46 | ||||
“C&M Engineering is a Consulting Engineering company, in Project Management & Control, Design & Engineering, Construction Management, operating in South-East Europe.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 45 | ||||
“NAMA Consulting Engineers and Planners SA was founded in Athens (GR) at the beginning of 1990.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 43 | ||||
“GAIA S.A.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 34 | ||||
“DASE is established by a mixed team of experienced and young engineers who shared the inspiring vision to create a modern engineering service company, capable of meeting the…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 31 | ||||
“Ο Όμιλος «Σαμαράς & Συνεργάτες» κατέχει ηγετική θέση στην ελληνική αγορά ως ένας από τους πλέον ολοκληρωμένους μελετητικούς και συμβουλευτικούς οργανισμούς, παρέχοντας…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 28 | ||||
“EXERGIA is an independent firm of consultants operating internationally and providing specialized advice, expertise and technical consultancy on the sectors of Energy, Environment…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 27 | ||||
“Established in ADT OMEGA is a leading engineering company which provides design, consulting and supervision services for infrastructure projects.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | Break Even ConsultingPartial evidence | 27 | |||
“Η εταιρεία Break Even Consulting ειδικεύεται στην παροχή συμβουλευτικών και μελετητικών υπηρεσιών υψηλής ποιότητας σε επιχειρήσεις, οργανισμούς και σε φορείς του δημοσίου και…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | Thymio Papayannis And Associates INCIndirect evidence | 26 | |||
“THYMIO PAPAYANNIS AND ASSOCIATES INC (TPA) has been providing technical and social services in the fields of planning, architecture and engineering in Greece and abroad, since…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 25 | ||||
“ROGAN ASSOCIATES is an International Consulting Engineering Firm specialized in Port and Waterfront Development.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | 24 | ||||
“We are a company of engineers, programmers, analysts and consultants who engage in designing, planning and generating innovative and smart solutions for the civil engineering…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 24 | ||||
“TREK Development is among the top Project Development in INFRASTRUCTURE & Professional Services Public listed company (ATHEX: TREK) in the region.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 21 | ||||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 20 | ||||
“ATEKE is a dynamic and highly specialized construction and engineering company based in Athens, Greece, with a strong legacy of delivering complex infrastructure, energy, and…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 18 | ||||
“At Define Solutions, we put your business needs and goals first, in order to deliver tailored solutions that drive growth and streamline operations.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 18 | ||||
“ANAX provides Construction, Design & Engineering, Project Management, and Technical Consulting services for diverse projects in the private sector.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | 17 | ||||
“Liontos & Associates Ltd was established in 1998, having as an objective to provide consulting services regarding the design and management of complex technical projects.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | 16 | ||||
“REMACO S.A, a founding member of the Hellenic Association of Management Consulting Firms (SESMA), is offering governance and innovation services, responsibly and consistently…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 16 | ||||
“PanMarine & Industrial Services Ltd was established in Piraeus, to accommodate the needs of the Greek Marine, Power and Industrial sectors.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 298 infrastructure consulting firms based in Greece
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Infrastructure consulting firms based in Greece at a glance
As of Sep 3, 2026Companies by employee count
Verified emails by last verification
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 consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Greece whose own description of what they do matches “infrastructure consulting firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among infrastructure consulting firms, and records with no verified work email. Companies headquartered outside Greece 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 an evidence 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, 906 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 3, 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 consulting firms by metro
- Infrastructure consulting firms in Athens89
Frequently asked
How many infrastructure consulting firms are there based in Greece?
RevenueBase identified 298 infrastructure consulting firms headquartered in Greece 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?
Salfo & Associates SA, headquartered in Athens, tops this list with the largest team on record.
Which city has the most infrastructure consulting firms?
Athens leads with 89 headquartered companies, followed by Thessaloniki (8) and Marousi (7).
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 906 verified decision-maker contacts tracked across these 298 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 3, 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 SmartSearch, 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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