Company lists · Data refreshed September 2026

Top 25 Geoscience consulting firms worldwide

Name: Geoscience consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 30,635 companies tracked

RevenueBase identified 30,635 geoscience consulting firms worldwide as of September 2026 and tracks 727,961 professional contacts across them, including 254,487 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers geoscience 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 geoscience 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

30,635Companies

727,961Contacts tracked

254,487Verified emails

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The 25 largest geoscience consulting firms worldwide

Ranked by team size

Top 25 of 30,635 geoscience consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to geoscience consulting firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Halliburton	Indirect evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	10001+	53,380 contacts →
	Indirect evidence “We collaborate and engineer solutions to maximize asset value for our customers.” Source: RevenueBase Database · checked Sep 28, 2026
2	Stantec	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 28, 2026	10001+	28,416 contacts →
	Indirect evidence “Stantec empowers clients, people, and communities to rise to the world’s greatest challenges at a time when the world faces more unprecedented concerns than ever before.” Source: RevenueBase Database · checked Sep 28, 2026
3	WOOD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 28, 2026	10001+	26,949 contacts →
	Partial evidence “Wood is a global leader in consulting and engineering, delivering critical solutions across energy and materials markets.” Source: RevenueBase Database · checked Sep 28, 2026
4	WSP	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 28, 2026	10001+	20,382 contacts →
	Indirect evidence “WSP is one of the world’s leading engineering, science and infrastructure solutions firms, uniting its multidisciplinary expertise to shape communities to advance humanity.” Source: RevenueBase Database · checked Sep 28, 2026
5	FUGRO	Indirect evidence	Leidschendam, NetherlandsHQ checked Sep 28, 2026	10001+	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, 2026
6	Terracon	Partial evidence	Olathe, KS, United StatesHQ checked Sep 28, 2026	5,001-10,000	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, 2026
7	Ausenco	Indirect evidence	South Brisbane, AustraliaHQ checked Sep 28, 2026	1,001-5,000	3,826 contacts →
	Indirect evidence “We transform complex challenges into sustainable solutions for the minerals & metals and industrial sectors worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
8	Ortec Group	Indirect evidence	Aix-en-provence, FranceHQ checked Sep 28, 2026	10001+	3,436 contacts →
	Indirect evidence “En conjuguant depuis sa création audace et rigueur, le groupe Ortec est devenu aujourd’hui un des leaders des services à l’industrie, l’énergie et l’environnement.” Source: RevenueBase Database · checked Sep 28, 2026
9	Golder	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 28, 2026	5,001-10,000	3,167 contacts →
	Indirect evidence “Golder was acquired by WSP.” Source: RevenueBase Database · checked Sep 28, 2026
10	CGG	Indirect evidence	Massy, FranceHQ checked Sep 28, 2026	1,001-5,000	2,782 contacts →
	Indirect evidence “Founded in 1931, Viridien (formerly CGG) is an advanced technology, digital and Earth data company that pushes the boundaries of science for a more prosperous and sustainable…” Source: RevenueBase Database · checked Sep 28, 2026
11	Multiconsult	Partial evidence	Oslo, NorwayHQ checked Sep 28, 2026	1,001-5,000	2,553 contacts →
	Partial evidence “Multiconsult Norway is one of the leading firms of architectures, consulting engineers and designers in Norway.” Source: RevenueBase Database · checked Sep 28, 2026
12	Brown And Caldwell	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,473 contacts →
	Indirect evidence “Headquartered in Walnut Creek, Calif, Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations.” Source: RevenueBase Database · checked Sep 28, 2026
13	Geosyntec Consultants	Partial evidence	Boca Raton, FL, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,393 contacts →
	Partial evidence “Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural…” Source: RevenueBase Database · checked Sep 28, 2026
14	CYD Ingeniería	Indirect evidence	Santiago, ChileHQ checked Sep 28, 2026	1,001-5,000	2,390 contacts →
	Indirect evidence “Nuestro propósito es contribuir al progreso sostenible de Latinoamérica y el mundo, mejorando la calidad de vida de las comunidades y dejando huella en las personas.” Source: RevenueBase Database · checked Sep 28, 2026
15	SRK Consulting	Partial evidence	Vancouver, CanadaHQ checked Sep 28, 2026	1,001-5,000	2,259 contacts →
	Partial evidence “SRK Consulting is an independent, international group providing specialised consultancy services.” Source: RevenueBase Database · checked Sep 28, 2026
16	Providence	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 28, 2026	n/a	2,232 contacts →
	Partial evidence “Providence is an employee-owned engineering and environmental consulting firm.” Source: RevenueBase Database · checked Sep 28, 2026
17	ECS Group Of Companies	Partial evidence	Chantilly, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,210 contacts →
	Partial evidence “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Source: RevenueBase Database · checked Sep 28, 2026
18	DRA Global	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	1,001-5,000	2,180 contacts →
	Indirect evidence “DRA Global Limited (DRA or the Group) is an international multi-disciplinary engineering, project delivery and operations management group, predominantly focused on the mining…” Source: RevenueBase Database · checked Sep 28, 2026
19	Langan Engineering & Environmental Services	Indirect evidence	Parsippany, NJ, United StatesHQ checked Sep 28, 2026	1,001-5,000	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, 2026
20	Civil & Environmental Consultants, INC	Partial evidence	Moon Township, PA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,145 contacts →
	Partial evidence “Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Source: RevenueBase Database · checked Sep 28, 2026
21	Hazen And Sawyer	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,100 contacts →
	Indirect evidence “As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.” Source: RevenueBase Database · checked Sep 28, 2026
22	R&q Ingeniería	Indirect evidence	Santiago, ChileHQ checked Sep 28, 2026	1,001-5,000	1,939 contacts →
	Indirect evidence “Con más de 49 años en el mercado, R&Q Ingeniería, de capitales chilenos, se ha consolidado como una consultora líder en la región.” Source: RevenueBase Database · checked Sep 28, 2026
23	LJA	Indirect evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,932 contacts →
	Indirect evidence “Employee-Owned.” Source: RevenueBase Database · checked Sep 28, 2026
24	Englobe	Indirect evidence	Québec, QC, CanadaHQ checked Sep 28, 2026	1,001-5,000	1,852 contacts →
	Indirect evidence “Englobe is a leader in the fields of engineering, gesosciences, environmental management, asset integrity and quality management.” Source: RevenueBase Database · checked Sep 28, 2026
25	Burns & Mcdonnell India	Indirect evidence	Vikhroli West, IndiaHQ checked Sep 28, 2026	1,001-5,000	1,724 contacts →
	Indirect evidence “At Burns & McDonnell India, we are a diverse team of talented engineers with multidiscipline design and consultancy working across sectors in critical infrastructure: oil and gas…” Source: RevenueBase Database · checked Sep 28, 2026

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: geoscience 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 geoscience consulting firms.
Partial evidence: Its own public description names part of geoscience consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geoscience 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 30,635 geoscience consulting firms worldwide

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Geoscience consulting firms worldwide at a glance

As of Sep 28, 2026

35.0%Verified-email coverage

23.8Average contacts per company

1-10Median size (employees)

1.2%Largest-city concentration · Houston

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

16,788

11-50

9,481

51-200

3,074

201-500

699

501-1,000

241

1,001-5,000

180

5,001-10,000

10001+

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 geoscience 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 geoscience consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “geoscience 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 geoscience 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 geoscience 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, 254,487 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.

Geoscience consulting firms by location

134 lists · largest first

Every Geoscience consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 geoscience 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 geoscience consulting firms are there worldwide?

RevenueBase identified 30,635 geoscience 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 geoscience consulting firms?

The United States leads with 6,661 companies, followed by Brazil (2,731) and Canada (1,940). Every geoscience consulting firms list by country and city is linked on this page.

Which city has the most geoscience consulting firms?

Houston leads with 371 headquartered companies, followed by Calgary (339) and Belo Horizonte (292).

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 254,487 verified decision-maker contacts tracked across these 30,635 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.