Company lists · Data refreshed September 2026
Top 25 Railway infrastructure consulting firms worldwide
RevenueBase identified 24,737 railway infrastructure consulting firms worldwide as of September 2026 and tracks 893,611 professional contacts across them, including 247,285 with verified work emails. The United States is the largest market and London the largest hub.
This list covers railway infrastructure consulting firms worldwide, 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 29, 2026. Country and city lists for railway infrastructure consulting firms follow the table.
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 railway infrastructure consulting firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 63,914 contacts → | ||||
Partial evidence “AECOM is the global infrastructure leader, committed to delivering a better world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 22,733 contacts → | ||||
Indirect evidence “We are a world-class engineering services and nuclear organization.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 11,641 contacts → | ||||
Partial evidence “Egis is a leading global architectural, consulting, construction engineering, operations and mobility services firm.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 9,297 contacts → | ||||
Indirect evidence “Atkins is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 8,458 contacts → | ||||
Indirect evidence “Mace Consult launched as a new and independent business on 5 March 2026, through a carve-out from Mace Group.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 8,440 contacts → | ||||
Partial evidence “Tata Consulting Engineers Limited (TCE) is the largest Indian private sector engineering and project consultancy and an emerging global leader in integrated engineering solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 8,088 contacts → | ||||
Indirect evidence “CH2M is now Jacobs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 7,469 contacts → | ||||
Partial evidence “For over a century, HNTB has shaped the built environment with distinctive expertise across a full spectrum of infrastructure solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 6,807 contacts → | ||||
Partial evidence “Afcons is flagship infrastructure engineering & construction company of the Shapoorji Pallonji Group.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 6,113 contacts → | ||||
Partial evidence “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 5,792 contacts → | ||||
Indirect evidence “Khatib & Alami (K&A) is a multidisciplinary design consultancy which operates primarily across the Middle East & Africa, Levant, Central and South-East Asia, and Europe.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 5,231 contacts → | ||||
Indirect evidence “SMEC is a global engineering, management and development consultancy with a 70-year history of delivering advanced solutions on a global scale across urban development…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5,069 contacts → | ||||
Indirect evidence “SYSTRA is one of the world's leading engineering and consultancy groups specialising in public transport and mobility solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4,764 contacts → | ||||
Indirect evidence “To Keep Cities Moving, MTR makes encounters happen and rendezvous for a more connected tomorrow.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4,612 contacts → | ||||
Indirect evidence “Artelia is an international multidisciplinary consultancy, engineering and project management group specialising in mobility, water, energy, building and industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4,362 contacts → | ||||
Strong evidence “Michael Baker International is a leading provider of engineering, consulting, and technology services spanning four Verticals: Infrastructure, Places and Facilities, Federal and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4,013 contacts → | ||||
Indirect evidence “POWER Engineers is now part of WSP.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3,843 contacts → | ||||
Partial evidence “Established in 1974 and headquartered in Hong Kong, Leighton Asia delivers a portfolio of high-profile infrastructure projects throughout Asia.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3,835 contacts → | ||||
Strong evidence “CHEC is focused on basic infrastructure construction, such as Marine Engineering, Dredging and Reclamation, Road and Bridge, Railways, Airports, Complete Plant, and other works.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3,752 contacts → | ||||
Indirect evidence “Somos una empresa mexicana con 68 años de experiencia en brindar soluciones integrales a retos complejos de infraestructura.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3,556 contacts → | ||||
Partial evidence “STV offers professional services for the infrastructure that powers our lives.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3,555 contacts → | ||||
Indirect evidence “Norconsult is a multidisciplinary engineering and design consultancy, providing services to clients in the public and private sectors worldwide.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3,266 contacts → | ||||
Indirect evidence “NESPAK is Pakistan’s premier consultancy organization (established in 1973).” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3,252 contacts → | ||||
Indirect evidence “CIMA+ fournit une gamme complète de services de génie-conseil partout au Canada.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3,138 contacts → | ||||
Indirect evidence “With more than 57 years of engineering excellence, ECG is one of the leading multidisciplinary engineering consultancies in the Middle East and Africa.” Source: RevenueBase Database · checked Sep 29, 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: railway infrastructure consulting firms. 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 railway infrastructure consulting firms.
- Partial evidence
- Its own public description names part of railway infrastructure consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name railway infrastructure consulting firms. 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 24,737 railway infrastructure consulting firms worldwide
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Railway infrastructure consulting firms worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 railway infrastructure consulting firms, 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.
- Coverage
- Every country. Country and city lists for railway infrastructure consulting firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “railway infrastructure consulting firms”. 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 railway infrastructure consulting firms), 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 railway infrastructure consulting firms, and records with no verified work email.
- 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, 247,285 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 29, 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.
Railway infrastructure consulting firms by location
120 lists · largest firstEvery Railway infrastructure consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Railway infrastructure consulting firms based in the United States1,930
- Railway infrastructure consulting firms based in India1,814
- Railway infrastructure consulting firms based in the United Kingdom1,654
- Railway infrastructure consulting firms based in Brazil1,508
- Railway infrastructure consulting firms based in Germany1,307
- Railway infrastructure consulting firms based in France1,131
- Railway infrastructure consulting firms based in Australia1,116
- Railway infrastructure consulting firms based in Italy1,012
- Railway infrastructure consulting firms based in the Netherlands558
- Railway infrastructure consulting firms based in Spain548
- Railway infrastructure consulting firms based in Canada545
- Railway infrastructure consulting firms based in Sweden492
- Railway infrastructure consulting firms based in Switzerland427
- Railway infrastructure consulting firms based in South Africa425
- Railway infrastructure consulting firms based in Türkiye424
- Railway infrastructure consulting firms based in Colombia391
- Railway infrastructure consulting firms based in Saudi Arabia296
- Railway infrastructure consulting firms based in the United Arab Emirates291
- Railway infrastructure consulting firms based in Poland263
- Railway infrastructure consulting firms based in Chile230
- Railway infrastructure consulting firms based in Peru218
- Railway infrastructure consulting firms based in Egypt199
- Railway infrastructure consulting firms based in Mexico188
- Railway infrastructure consulting firms based in Malaysia173
- Railway infrastructure consulting firms based in Portugal170
- Railway infrastructure consulting firms based in Morocco167
- Railway infrastructure consulting firms based in Austria155
- Railway infrastructure consulting firms based in Pakistan155
- Railway infrastructure consulting firms based in Denmark148
- Railway infrastructure consulting firms based in Belgium147
- Railway infrastructure consulting firms based in Norway143
- Railway infrastructure consulting firms based in Greece134
- Railway infrastructure consulting firms based in Indonesia133
- Railway infrastructure consulting firms based in Argentina129
- Railway infrastructure consulting firms based in Romania127
- Railway infrastructure consulting firms based in New Zealand117
- Railway infrastructure consulting firms based in Ireland103
- Railway infrastructure consulting firms based in Nigeria102
- Railway infrastructure consulting firms based in Japan97
- Railway infrastructure consulting firms based in Israel96
- Railway infrastructure consulting firms based in Tunisia73
- Railway infrastructure consulting firms based in Hungary62
- Railway infrastructure consulting firms based in Finland59
- Railway infrastructure consulting firms based in Serbia56
- Railway infrastructure consulting firms based in Kenya50
- Railway infrastructure consulting firms based in Lebanon45
- Railway infrastructure consulting firms based in Croatia44
- Railway infrastructure consulting firms based in Oman42
- Railway infrastructure consulting firms based in Jordan39
- Railway infrastructure consulting firms based in Hong Kong38
- Railway infrastructure consulting firms based in Qatar38
- Railway infrastructure consulting firms based in Luxembourg37
- Railway infrastructure consulting firms based in Lithuania27
Cities
- Railway infrastructure consulting firms based in London, United Kingdom297
- Railway infrastructure consulting firms based in Sao Paulo, Brazil264
- Railway infrastructure consulting firms based in Sydney, Australia140
- Railway infrastructure consulting firms based in Melbourne, Australia134
- Railway infrastructure consulting firms based in Belo Horizonte, Brazil132
- Railway infrastructure consulting firms based in Madrid, Spain126
- Railway infrastructure consulting firms based in New Delhi, India126
- Railway infrastructure consulting firms based in Riyadh, Saudi Arabia118
- Railway infrastructure consulting firms based in Paris, France116
- Railway infrastructure consulting firms based in Bogota, Colombia108
- Railway infrastructure consulting firms based in Mumbai, India107
- Railway infrastructure consulting firms based in Rio De Janeiro, Brazil103
- Railway infrastructure consulting firms based in Stockholm, Sweden103
- Railway infrastructure consulting firms based in Ankara, Türkiye101
- Railway infrastructure consulting firms based in Dubai, United Arab Emirates97
- Railway infrastructure consulting firms based in Cairo, Egypt94
- Railway infrastructure consulting firms based in Pune, India89
- Railway infrastructure consulting firms based in Hyderabad, India88
- Railway infrastructure consulting firms based in Brisbane, Australia86
- Railway infrastructure consulting firms based in Roma, Italy83
- Railway infrastructure consulting firms based in Berlin, Germany80
- Railway infrastructure consulting firms based in Kolkata, India75
- Railway infrastructure consulting firms based in Ahmedabad, India74
- Railway infrastructure consulting firms based in Curitiba, Brazil69
- Railway infrastructure consulting firms based in Gurgaon, India64
- Railway infrastructure consulting firms based in Houston, United States63
- Railway infrastructure consulting firms based in Barcelona, Spain62
- Railway infrastructure consulting firms based in New York, United States62
- Railway infrastructure consulting firms based in Abu Dhabi, United Arab Emirates57
- Railway infrastructure consulting firms based in Johannesburg, South Africa57
- Railway infrastructure consulting firms based in Perth, Australia56
- Railway infrastructure consulting firms based in Chennai, India55
- Railway infrastructure consulting firms based in Athens, Greece52
- Railway infrastructure consulting firms based in Bangalore, India52
- Railway infrastructure consulting firms based in Noida, India50
- Railway infrastructure consulting firms based in Santiago, Chile49
- Railway infrastructure consulting firms based in Zurich, Switzerland48
- Railway infrastructure consulting firms based in Bucharest, Romania46
- Railway infrastructure consulting firms based in Gurugram, India46
- Railway infrastructure consulting firms based in Toronto, Canada46
- Railway infrastructure consulting firms based in Manchester, United Kingdom44
- Railway infrastructure consulting firms based in Warszawa, Poland44
- Railway infrastructure consulting firms based in Chicago, United States41
- Railway infrastructure consulting firms based in Auckland, New Zealand40
- Railway infrastructure consulting firms based in Dresden, Germany39
- Railway infrastructure consulting firms based in Oslo, Norway38
- Railway infrastructure consulting firms based in Hamburg, Germany37
- Railway infrastructure consulting firms based in Montreal, Canada37
- Railway infrastructure consulting firms based in Pretoria, South Africa37
- Railway infrastructure consulting firms based in Derby, United Kingdom36
- Railway infrastructure consulting firms based in Belgrade, Serbia35
- Railway infrastructure consulting firms based in Bengaluru, India31
- Railway infrastructure consulting firms based in Miami, United States31
- Railway infrastructure consulting firms based in Birmingham, United Kingdom30
- Railway infrastructure consulting firms based in Edmonton, Canada30
- Railway infrastructure consulting firms based in Bristol, United Kingdom29
- Railway infrastructure consulting firms based in Milano, Italy29
- Railway infrastructure consulting firms based in Petaling Jaya, Malaysia29
- Railway infrastructure consulting firms based in Wien, Austria29
- Railway infrastructure consulting firms based in Dallas, United States28
- Railway infrastructure consulting firms based in Lyon, France28
- Railway infrastructure consulting firms based in Thane, India28
- Railway infrastructure consulting firms based in Adelaide, Australia27
- Railway infrastructure consulting firms based in Cape Town, South Africa27
- Railway infrastructure consulting firms based in Calgary, Canada26
- Railway infrastructure consulting firms based in Leipzig, Germany26
- Railway infrastructure consulting firms based in Torino, Italy25
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 railway infrastructure consulting firms, 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 railway infrastructure consulting firms are there worldwide?
RevenueBase identified 24,737 railway infrastructure consulting firms worldwide 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?
AECOM, headquartered in Dallas, tops this list with the largest team on record.
Which country has the most railway infrastructure consulting firms?
The United States leads with 1,930 companies, followed by India (1,814) and the United Kingdom (1,654). Every railway infrastructure consulting firms list by country and city is linked on this page.
Which city has the most railway infrastructure consulting firms?
London leads with 303 headquartered companies, followed by Sao Paulo (264) and Tehran (189).
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 247,285 verified decision-maker contacts tracked across these 24,737 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 29, 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.