Company lists · Data refreshed September 2026
Top 25 Infrastructure consulting firms based in Croatia
RevenueBase identified 73 infrastructure consulting firms headquartered in Croatia as of September 2026 and tracks 949 professional contacts across them, including 288 with verified work emails and 6 with mobile numbers. Zagreb is the largest hub.
This list covers infrastructure consulting firms headquartered in Croatia, 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 Croatia
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 262 | ||||
“Institut IGH d.d.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 56 | ||||
“Established in 1949, Elektroprojekt has since developed from a company specialized in design of hydroelectric and thermal power plants into a company unique in the region for its…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 49 | ||||
“Apsolon is a global management consulting firm.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 41 | ||||
“INVESTINŽENJERING d.o.o.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | WYG ConsultingPartial evidence | 41 | |||
“WYG Consulting is a project management and technical consultancy firm working across Europe and Africa.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 30 | ||||
“IPZ (en.The Engineering Design Institute) is a joint-stock company specializing in design and consulting services, operating independently and without any ties to construction…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 23 | ||||
“Tvrtka je utemeljena 1967.g.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 23 | ||||
“INP Oil & Gas Engineering Ltd.(Inženjering za naftu i plin d.o.o.) is a leading engineering, design and consultancy company founded 1952.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | Urbane Ideje D.O.OIndirect evidence | 17 | |||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | Vodoprivredno-Projektni BiroIndirect evidence | 16 | |||
“VPB d.d.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | Vita Projekt LTDIndirect evidence | 14 | |||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 12 | ||||
“Optom is a company that provides its customers, especially those within financial services sector, with tailor-made advisory, education and system architecture related services…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 | ||||
“Structural design in steelwork, concrete, timber and masonry • Special structures • Building performance • Assessment and renovation • Refurbishment, re-modelling and renovation…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 10 | ||||
“Mobilita Evolva Ltd.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | 9 | ||||
“Infra Plan is research driven company, providing consultancy in the area of data analytics, maintenance planning projects and infrastructure management.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 9 | ||||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 | ||||
“Engineering company based in Osijek, Croatia with dislocated office in Zagreb, Croatia.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 | ||||
“Official account of Hidroinzenjering d.o.o.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 | ||||
“Company services include urban development, infrastructure, climate adaptation, sustainable business, waste, and energy solutions customized to meet each client's unique needs.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 | ||||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 | ||||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 | ||||
“MTSI Solutions is an international consulting firm with offices in the UK, Croatia and Saudi Arabia.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 | ||||
“The company BESTPROJEKT d.o.o- Bureau for Energy and Mechanical Engineering, was established as a 40% legal successor of the company MAŠINOPROJEKT from Zagreb, and has…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 | ||||
“With a wealth of experience and a commitment to employing cutting-edge technologies, we specialize in providing comprehensive services throughout the design and construction…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 | ||||
“Arctis company provides consulting services in business interior design, as well as active managing project performance, from space adaptation to moving all of organization's…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 73 infrastructure consulting firms based in Croatia
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Infrastructure consulting firms based in Croatia 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 Croatia 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 Croatia 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, 288 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 Zagreb36
Frequently asked
How many infrastructure consulting firms are there based in Croatia?
RevenueBase identified 73 infrastructure consulting firms headquartered in Croatia 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?
Institut Igh, D.D, headquartered in Zagreb, tops this list with the largest team on record.
Which city has the most infrastructure consulting firms?
Zagreb leads with 36 headquartered companies, followed by Osijek (7) and Split (6).
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 288 verified decision-maker contacts tracked across these 73 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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