Company lists · Data refreshed September 2026

Top 25 Ehs consultancies worldwide

Name: Ehs consultancies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 47,765 companies tracked

RevenueBase identified 47,765 ehs consultancies worldwide as of September 2026 and tracks 535,605 professional contacts across them, including 173,363 with verified work emails and 65,769 with mobile numbers. Brazil is the largest market and Sao Paulo the largest hub.

This list covers ehs consultancies 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 24, 2026. Country and city lists for ehs consultancies 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 24, 2026 86% judged on-target in blind review

47,765Companies

535,605Contacts tracked

173,363Verified emails

65,769Mobile numbers

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The 25 largest ehs consultancies worldwide

Ranked by team size

Top 25 of 47,765 ehs consultancies worldwide, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to ehs consultancies: 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	Autonomo	Indirect evidence	Córdoba, SpainHQ checked Sep 24, 2026	n/a	23,018 contacts →
	Indirect evidence “Calidad y Gestión es una empresa consultora de ámbito internacional especializada en servicios de asesoría en las siguientes áreas: Calidad Medio Ambiente Responsabilidad social…” Source: RevenueBase Database · checked Sep 24, 2026
2	Terracon	Indirect evidence	Olathe, KS, United StatesHQ checked Sep 24, 2026	5,001-10,000	6,113 contacts →
	Indirect evidence “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Source: RevenueBase Database · checked Sep 24, 2026
3	EXYTE	Indirect evidence	Stuttgart, GermanyHQ checked Sep 24, 2026	10001+	3,760 contacts →
	Indirect evidence “As an engineering, procurement, and construction (EPC) company, we design and deliver high-tech facilities for our clients.” Source: RevenueBase Database · checked Sep 24, 2026
4	Norconsult	Indirect evidence	Sandvika, NorwayHQ checked Sep 24, 2026	5,001-10,000	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 24, 2026
5	Quirónprevención	Indirect evidence	Madrid, SpainHQ checked Sep 24, 2026	5,001-10,000	3,441 contacts →
	Indirect evidence “Quirónprevención, perteneciente al Grupo Quirónsalud, es la mayor empresa del sector de la Prevención de Riesgos Laborales a nivel internacional.” Source: RevenueBase Database · checked Sep 24, 2026
6	Alten Italia	Indirect evidence	Milano, ItalyHQ checked Sep 24, 2026	1,001-5,000	3,085 contacts →
	Indirect evidence “Il Gruppo ALTEN, leader europeo nella consulenza per le tecnologie avanzate in campo ingegneristico e ICT, è quotato alla Borsa di Parigi e vanta più di 57.700 collaboratori in…” Source: RevenueBase Database · checked Sep 24, 2026
7	Ambipar	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 24, 2026	10001+	2,599 contacts →
	Indirect evidence “Our mission is to promote ecological transformation by investing in decarbonization projects, circular economy, energy transition, and environmental regeneration.” Source: RevenueBase Database · checked Sep 24, 2026
8	Multiconsult	Indirect evidence	Oslo, NorwayHQ checked Sep 24, 2026	1,001-5,000	2,553 contacts →
	Indirect evidence “Multiconsult Norway is one of the leading firms of architectures, consulting engineers and designers in Norway.” Source: RevenueBase Database · checked Sep 24, 2026
9	Englobe	Indirect evidence	Québec, QC, CanadaHQ checked Sep 24, 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 24, 2026
10	BDO Brazil	Indirect evidence	Sp, BrazilHQ checked Sep 24, 2026	1,001-5,000	1,791 contacts →
	Indirect evidence “Presidida por Raul Corrêa da Silva, a BDO RCS foi fundada em 2001 e desde então mantém participação expressiva no mercado de auditorias.” Source: RevenueBase Database · checked Sep 24, 2026
11	Swca Environmental Consultants	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,629 contacts →
	Indirect evidence “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Source: RevenueBase Database · checked Sep 24, 2026
12	J. J. Keller & Associates, INC	Indirect evidence	Neenah, WI, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,577 contacts →
	Indirect evidence “J.” Source: RevenueBase Database · checked Sep 24, 2026
13	Exponent	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,560 contacts →
	Indirect 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 24, 2026
14	Apside	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 24, 2026	1,001-5,000	1,537 contacts →
	Indirect evidence “We are true to our word Expertise, trust, careers For 36 years, Apside has cooperated with the largest French and European groups on their IT and scientific projects.” Source: RevenueBase Database · checked Sep 24, 2026
15	Montrose Environmental Group	Indirect evidence	Little Rock, AR, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,529 contacts →
	Indirect evidence “Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.” Source: RevenueBase Database · checked Sep 24, 2026
16	Vulcain Engineering Group	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 24, 2026	5,001-10,000	1,496 contacts →
	Indirect evidence “Vulcain Engineering Group is a multi-specialist engineering and consulting group serving industrial companies across the globe, focused on critical sectors: energy, health…” Source: RevenueBase Database · checked Sep 24, 2026
17	Intellera Consulting	Indirect evidence	Milan, ItalyHQ checked Sep 24, 2026	1,001-5,000	1,304 contacts →
	Indirect evidence “Intellera Consulting is a consulting company born from the buyout management of the PwC Public administration and Healthcare branch.” Source: RevenueBase Database · checked Sep 24, 2026
18	Adec Innovations	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,304 contacts →
	Indirect evidence “ADEC Innovations seamlessly delivers fully integrated, cost-effective industry expertise, business process & data management, and software services.” Source: RevenueBase Database · checked Sep 24, 2026
19	Fichtner	Indirect evidence	Stuttgart, GermanyHQ checked Sep 24, 2026	1,001-5,000	1,279 contacts →
	Indirect evidence “As a leading, independent engineering and consultancy enterprise active in the sectors of energy and infrastructure, Fichtner handles challenging projects in countries all over…” Source: RevenueBase Database · checked Sep 24, 2026
20	Dornan	Indirect evidence	Cork, IrelandHQ checked Sep 24, 2026	501-1,000	1,257 contacts →
	Indirect evidence “Dornan Engineering concentrates on a market where quality is appreciated.” Source: RevenueBase Database · checked Sep 24, 2026
21	RSK Group	Indirect evidence	Helsby, United KingdomHQ checked Sep 24, 2026	10001+	1,255 contacts →
	Indirect evidence “RSK Group is a global leader in the delivery of environmental and engineering solutions.” Source: RevenueBase Database · checked Sep 24, 2026
22	ESS	Partial evidence	Tempe, AZ, United StatesHQ checked Sep 24, 2026	n/a	1,201 contacts →
	Partial evidence “ESS is the leading provider of Environmental, Health & Safety (EHS) and Crisis Management sustainability software.” Source: RevenueBase Database · checked Sep 24, 2026
23	DGE Danmark	Indirect evidence	Højbjerg, DenmarkHQ checked Sep 24, 2026	n/a	1,176 contacts →
	Indirect evidence “Miljø er vores kernekompetence og vores ansvar.” Source: RevenueBase Database · checked Sep 24, 2026
24	Apex Companies	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,137 contacts →
	Indirect evidence “Who is Apex?” Source: RevenueBase Database · checked Sep 24, 2026
25	Saulsbury	Indirect evidence	Odessa, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,130 contacts →
	Indirect evidence “Saulsbury Industries is a full-service Engineering Procurement and Construction (EPC) contractor that provides engineering, general construction, electrical & instrumentation…” Source: RevenueBase Database · checked Sep 24, 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: ehs consultancies. 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 ehs consultancies.
Partial evidence: Its own public description names part of ehs consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ehs consultancies. 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 47,765 ehs consultancies worldwide

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Ehs consultancies worldwide at a glance

As of Sep 24, 2026

32.4%Verified-email coverage

12.3%Mobile-number coverage

11.2Average contacts per company

1-10Median size (employees)

2.4%Largest-city concentration · Sao Paulo

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

32,131

11-50

12,016

51-200

2,604

201-500

428

501-1,000

158

1,001-5,000

111

5,001-10,000

10001+

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 ehs consultancies, 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: 40 countries, largest first: Brazil, the United States, the United Kingdom, France, Italy, Australia, Germany, Spain, Canada, the Netherlands and 30 more. Country and city lists for ehs consultancies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “ehs consultancies”. 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 ehs consultancies), 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 ehs consultancies, 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, 173,363 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 24, 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.

Ehs consultancies by location

150 lists · largest first

Every Ehs consultancies 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 ehs consultancies, 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 ehs consultancies are there worldwide?

RevenueBase identified 47,765 ehs consultancies 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?

Autonomo, headquartered in Cordoba, tops this list with the largest team on record.

Which country has the most ehs consultancies?

Brazil leads with 8,114 companies, followed by the United States (6,691) and the United Kingdom (6,142). Every ehs consultancies list by country and city is linked on this page.

Which city has the most ehs consultancies?

Sao Paulo leads with 1137 headquartered companies, followed by London (869) and Paris (423).

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 173,363 verified decision-maker contacts tracked across these 47,765 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 24, 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.