Company lists · Data refreshed September 2026
Top 25 Geophysical consulting firms worldwide
RevenueBase identified 15,652 geophysical consulting firms worldwide as of September 2026 and tracks 311,388 professional contacts across them, including 100,133 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers geophysical 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 28, 2026. Country and city lists for geophysical 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 geophysical consulting firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 53,380 contacts → | ||||
Indirect evidence “We collaborate and engineer solutions to maximize asset value for our customers.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 8,248 contacts → | ||||
Indirect evidence “We are the world’s leading Geo-data specialist, collecting and analysing comprehensive information about the Earth and the structures built upon it.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 3,932 contacts → | ||||
Indirect evidence “We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 3,167 contacts → | ||||
Indirect evidence “Golder was acquired by WSP.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 2,259 contacts → | ||||
Partial evidence “SRK Consulting is an independent, international group providing specialised consultancy services.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,210 contacts → | ||||
Partial evidence “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,177 contacts → | ||||
Indirect evidence “Langan's client-focused, highly entrepreneurial culture cultivates an environment of opportunities in which career growth and teamwork flourish.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,560 contacts → | ||||
Partial evidence “In an era of accelerating change, Exponent is the only premium engineering and scientific consulting firm with the depth and breadth of expertise to solve our clients’ most…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,358 contacts → | ||||
Indirect evidence “Partner Assessment Corp.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,231 contacts → | ||||
Partial evidence “Knight Piésold is an employee-owned, global consulting firm providing specialist services to the mining, power, water resources, and infrastructure industries.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,160 contacts → | ||||
Partial evidence “BGP is one of the world's leading geophysical service companies, delivering a wide range of technologies, services and equipment to the oil and gas industry worldwide.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,139 contacts → | ||||
Indirect evidence “At Verdantas, we blend engineering and environmental science together with advanced technology and world-renowned labs to create solutions with the big picture in mind.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,137 contacts → | ||||
Indirect evidence “Who is Apex?” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,124 contacts → | ||||
Indirect evidence “Haley & Aldrich is committed to solving our clients’ most meaningful challenges in the built and natural environments.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,088 contacts → | ||||
Partial evidence “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,066 contacts → | ||||
Indirect evidence “Timmons Group is an engineering & technology firm specializing in civil, environmental, GIS, and surveying services to clients across the US.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,031 contacts → | ||||
Indirect evidence “Shearwater is a global marine geoscience and technology business.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 994 contacts → | ||||
Indirect evidence “Capital Limited is a leading service provider for the exploration and mining industry.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 908 contacts → | ||||
Indirect evidence “Viridien is an advanced technology, digital and Earth data company that pushes the boundaries of science for a more prosperous and sustainable future.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 894 contacts → | ||||
Indirect evidence “M.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 880 contacts → | ||||
Indirect evidence “Founded in 1964 as a soils and foundations specialty consultant, GZA GeoEnvironmental, Inc.(GZA) has grown into a full-service company providing its clients with highly…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 871 contacts → | ||||
Partial evidence “KCB is a global engineering, geosciences, and environmental consulting firm driven by Passion, Integrity and a commitment to Excellence.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 859 contacts → | ||||
Indirect evidence “The right team is more than an advantage.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 834 contacts → | ||||
Partial evidence “Headquartered in Houston, Texas, Geokinetics is one of the world’s largest independent land and seafloor geophysical companies.” Source: RevenueBase Database · checked Sep 28, 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: geophysical 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 geophysical consulting firms.
- Partial evidence
- Its own public description names part of geophysical consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name geophysical 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 15,652 geophysical consulting firms worldwide
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Geophysical consulting firms worldwide at a glance
As of Sep 28, 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 geophysical 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 geophysical consulting firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “geophysical 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 geophysical 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 geophysical 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, 100,133 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 28, 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.
Geophysical consulting firms by location
71 lists · largest firstEvery Geophysical consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geophysical consulting firms based in the United States3,142
- Geophysical consulting firms based in Brazil1,205
- Geophysical consulting firms based in Canada968
- Geophysical consulting firms based in Australia706
- Geophysical consulting firms based in France663
- Geophysical consulting firms based in the United Kingdom606
- Geophysical consulting firms based in Italy510
- Geophysical consulting firms based in Germany447
- Geophysical consulting firms based in Chile390
- Geophysical consulting firms based in India368
- Geophysical consulting firms based in Spain303
- Geophysical consulting firms based in Türkiye281
- Geophysical consulting firms based in Indonesia280
- Geophysical consulting firms based in South Africa253
- Geophysical consulting firms based in Peru252
- Geophysical consulting firms based in Colombia251
- Geophysical consulting firms based in Mexico171
- Geophysical consulting firms based in the Netherlands150
- Geophysical consulting firms based in Argentina139
- Geophysical consulting firms based in Switzerland131
- Geophysical consulting firms based in Nigeria124
- Geophysical consulting firms based in Poland105
- Geophysical consulting firms based in New Zealand97
- Geophysical consulting firms based in Malaysia94
- Geophysical consulting firms based in Norway93
- Geophysical consulting firms based in Belgium89
- Geophysical consulting firms based in Sweden77
- Geophysical consulting firms based in Portugal76
- Geophysical consulting firms based in Greece66
- Geophysical consulting firms based in the United Arab Emirates65
- Geophysical consulting firms based in Saudi Arabia56
- Geophysical consulting firms based in Austria49
- Geophysical consulting firms based in Romania42
- Geophysical consulting firms based in the Philippines40
- Geophysical consulting firms based in Denmark39
- Geophysical consulting firms based in Ireland36
- Geophysical consulting firms based in Finland28
Cities
- Geophysical consulting firms based in Houston, United States254
- Geophysical consulting firms based in Calgary, Canada214
- Geophysical consulting firms based in Belo Horizonte, Brazil171
- Geophysical consulting firms based in Sao Paulo, Brazil131
- Geophysical consulting firms based in Perth, Australia109
- Geophysical consulting firms based in Lima, Peru102
- Geophysical consulting firms based in Rio De Janeiro, Brazil88
- Geophysical consulting firms based in Santiago, Chile88
- Geophysical consulting firms based in Ankara, Türkiye71
- Geophysical consulting firms based in Denver, United States64
- Geophysical consulting firms based in London, United Kingdom64
- Geophysical consulting firms based in Bogota, Colombia61
- Geophysical consulting firms based in Brisbane, Australia56
- Geophysical consulting firms based in Toronto, Canada56
- Geophysical consulting firms based in Vancouver, Canada48
- Geophysical consulting firms based in Curitiba, Brazil46
- Geophysical consulting firms based in Johannesburg, South Africa44
- Geophysical consulting firms based in Melbourne, Australia42
- Geophysical consulting firms based in Edmonton, Canada40
- Geophysical consulting firms based in Austin, United States39
- Geophysical consulting firms based in Paris, France35
- Geophysical consulting firms based in Porto Alegre, Brazil32
- Geophysical consulting firms based in Sydney, Australia32
- Geophysical consulting firms based in Dallas, United States31
- Geophysical consulting firms based in Montreal, Canada31
- Geophysical consulting firms based in Auckland, New Zealand28
- Geophysical consulting firms based in Barcelona, Spain28
- Geophysical consulting firms based in Tampa, United States28
- Geophysical consulting firms based in Aberdeen, United Kingdom27
- Geophysical consulting firms based in New York, United States26
- Geophysical consulting firms based in Dubai, United Arab Emirates25
- Geophysical consulting firms based in Kuala Lumpur, Malaysia25
- Geophysical consulting firms based in Oslo, Norway25
- Geophysical consulting firms based in San Diego, United States25
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 geophysical 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 geophysical consulting firms are there worldwide?
RevenueBase identified 15,652 geophysical 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?
Halliburton, headquartered in Houston, tops this list with the largest team on record.
Which country has the most geophysical consulting firms?
The United States leads with 3,142 companies, followed by Brazil (1,205) and Canada (968). Every geophysical consulting firms list by country and city is linked on this page.
Which city has the most geophysical consulting firms?
Houston leads with 254 headquartered companies, followed by Calgary (215) and Belo Horizonte (171).
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 100,133 verified decision-maker contacts tracked across these 15,652 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 28, 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.