Company lists · Data refreshed October 2026

Top 25 Esg consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 15,657 companies tracked

RevenueBase identified 15,657 company matches for esg consulting firms worldwide as of October 2026 and tracks 143,558 professional contacts across them, including 47,050 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for esg consulting firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 1, 2026. Country and city lists for esg consulting firms follow the table.

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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 1, 2026 How this list was built

15,657Companies

143,558Contacts tracked

47,050Verified emails

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The 25 largest esg consulting firms worldwide

Ranked by team size

Top 25 of 15,657 company matches for esg consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	ERM	Exact match	London, United KingdomHQ recorded Oct 1, 2026	5,001-10,000	9,119 contacts →
	Exact match “Sustainability is our business.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	Management Solutions	Exact match	Madrid, SpainHQ recorded Oct 1, 2026	1,001-5,000	4,468 contacts →
	Exact match “Management Solutions is a leading provider of business consulting services for regulated industries.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	SLR Consulting	Exact match	London, United KingdomHQ recorded Oct 1, 2026	1,001-5,000	3,848 contacts →
	Exact match “SLR is a committed partner in our clients’ sustainability journeys.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4	Ambipar	Exact match	Sao Paulo, BrazilHQ recorded Oct 1, 2026	10001+	2,599 contacts →
	Exact match “Our mission is to promote ecological transformation by investing in decarbonization projects, circular economy, energy transition, and environmental regeneration.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	Ecovadis	Exact match	Paris, JapanHQ recorded Oct 1, 2026	1,001-5,000	1,854 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,629 contacts →
	Exact match “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	Adec Innovations	Exact match	Irvine, CA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,304 contacts →
	Exact match “ADEC Innovations seamlessly delivers fully integrated, cost-effective industry expertise, business process & data management, and software services.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,137 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	Morningstar Sustainalytics	Exact match	Amsterdam, NetherlandsHQ recorded Oct 1, 2026	1,001-5,000	954 contacts →
	Exact match “Morningstar Sustainalytics data and insights allow investors and companies to spend less time grappling with ESG and climate, and more time making the most of it.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10	Achilles Information Limited	Exact match	Abingdon, United KingdomHQ recorded Oct 1, 2026	501-1,000	836 contacts →
	Exact match “For more than 30 years, Achilles has protected organisations’ business interests and reputations by providing unrivalled levels of supply chain transparency, carbon reduction and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Uniqus Consultech INC	Exact match	San Jose, CA, United StatesHQ recorded Oct 1, 2026	501-1,000	675 contacts →
	Exact match “Uniqus Consultech is an AI and global tech-enabled consulting company that specializes in Accounting & Reporting Consulting, Governance, Risk & Compliance, Sustainability &…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	Antea Group USA	Exact match	St. Paul, MN, United StatesHQ recorded Oct 1, 2026	1,001-5,000	658 contacts →
	Exact match “Antea Group is an international engineering and environmental consulting firm specializing in full-service solutions in the fields of environment, health and safety, and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	CTA Engenharia	Exact match	Rio De Janeiro, BrazilHQ recorded Oct 1, 2026	201-500	540 contacts →
	Exact match “A CTA foi criada em 1995, em Belo Horizonte Minas Gerais, ampliando sua atividade e posicionando sua sede no estado do Rio de Janeiro em Duque de Caxias, próximo ao Pólo…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Grand View Research, INC	Exact match	San Francisco, CA, United StatesHQ recorded Oct 1, 2026	501-1,000	539 contacts →
	Exact match “Grand View Research is an end-to-end market research technology and consulting business.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	EBI Consulting	Exact match	Burlington, MA, United StatesHQ recorded Oct 1, 2026	501-1,000	535 contacts →
	Exact match “For 35 years we have been helping investors, lenders, owners, developers, contractors, and property managers reduce risk and optimize their built facilities, infrastructure and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	Diagonal	Exact match	Sao Paulo, BrazilHQ recorded Oct 1, 2026	501-1,000	527 contacts →
	Exact match “Diagonal is a pioneering socio-environmental management consultancy that helps companies, organizations and governments to raise their ESG standard and generate a positive…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	Fondasol	Exact match	Avignon, FranceHQ recorded Oct 1, 2026	501-1,000	522 contacts →
	Exact match “le Groupe Fondasol accompagne les projets de construction et d’aménagement du territoire sur l'ensemble de ses domaines d’expertises.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	Rincon Consultants	Exact match	Ventura, CA, United StatesHQ recorded Oct 1, 2026	501-1,000	479 contacts →
	Exact match “Rincon Consultants is a multi-disciplinary environmental sciences, planning, and engineering consulting firm that provides quality professional services to government and industry.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19	Sete Soluções E Tecnologia Ambiental	Exact match	Belo Horizonte, BrazilHQ recorded Oct 1, 2026	501-1,000	448 contacts →
	Exact match “Somos uma das maiores consultorias em meio ambiente do Brasil, fundada em 1997, contando, hoje, com uma equipe técnica multidisciplinar permanente, que congrega profissionais das…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	Groundwater & Environmental Services, INC	Exact match	Wall Township, NJ, United StatesHQ recorded Oct 1, 2026	201-500	447 contacts →
	Exact match “We are Groundwater & Environmental Services, Inc, better known as GES.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21	Tecno Group	Exact match	Naples, ItalyHQ recorded Oct 1, 2026	201-500	423 contacts →
	Exact match “We are an Energy Digital and Sustainable Company specialized in sustainability consulting services and 4.0 solutions.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	Greenflex	Exact match	Paris, FranceHQ recorded Oct 1, 2026	501-1,000	390 contacts →
	Exact match “Since 2009, GreenFlex has been a key partner in the energy, environmental and societal transformation of organizations, enabling them to change their trajectory towards an economy…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23	P2s	Exact match	Long Beach, CA, United StatesHQ recorded Oct 1, 2026	201-500	375 contacts →
	Exact match “P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24	EMM Consulting PTY Limited	Exact match	St Leonards, AustraliaHQ recorded Oct 1, 2026	201-500	361 contacts →
	Exact match “At EMM, we believe that a sustainable future is achievable, and we are dedicated to helping our clients and the community make it a reality.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25	Triton Environmental Consultants LTD	Exact match	Vancouver, BC, CanadaHQ recorded Oct 1, 2026	201-500	351 contacts →
	Exact match “Triton Environmental Consultants knows western Canada.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “esg consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 15,657 esg consulting firms worldwide

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Esg consulting firms worldwide at a glance

As of Oct 1, 2026

32.8%Verified-email coverage

9.2Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · Sao Paulo

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

11,386

11-50

3,451

51-200

588

201-500

117

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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.
Coverage: Every country. Country and city lists for esg consulting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “esg consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 47,050 professional contacts with verified work emails across the full matched dataset. 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 October 1, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Esg consulting firms by location

114 lists · largest first

Every Esg 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “esg consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many esg consulting firms are there worldwide?

RevenueBase identified 15,657 company matches for esg consulting firms worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

ERM tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most esg consulting firms?

The United States leads with 2,874 companies, followed by Brazil (2,789) and the United Kingdom (1,346). Every esg consulting firms list by country and city is linked on this page.

Which city has the most esg consulting firms?

Sao Paulo leads with 385 company records, followed by London (368) and Paris (215).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 47,050 professional contacts with verified work emails tracked across these 15,657 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 1, 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.