Company lists · Data refreshed September 2026

Top 25 Sustainability audit services worldwide

Name: Sustainability audit services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 3,693 companies tracked

RevenueBase identified 3,693 sustainability audit services worldwide as of September 2026 and tracks 26,573 professional contacts across them, including 8,328 with verified work emails. The United States is the largest market and London the largest hub.

This list covers sustainability audit services 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 sustainability audit services 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 29, 2026 86% judged on-target in blind review

3,693Companies

26,573Contacts tracked

8,328Verified emails

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The 25 largest sustainability audit services worldwide

Ranked by team size

Top 25 of 3,693 sustainability audit services worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability audit services: 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	Ecovadis	Indirect evidence	Paris, JapanHQ checked Sep 29, 2026	1,001-5,000	1,854 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
2	Morningstar Sustainalytics	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 29, 2026	1,001-5,000	954 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 29, 2026
3	Achilles Information Limited	Indirect evidence	Abingdon, United KingdomHQ checked Sep 29, 2026	501-1,000	836 contacts →
	Indirect evidence “For more than 30 years, Achilles has protected organisations’ business interests and reputations by providing unrivalled levels of supply chain transparency, carbon reduction and…” Source: RevenueBase Database · checked Sep 29, 2026
4	Diagonal	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 29, 2026	501-1,000	527 contacts →
	Indirect evidence “Diagonal is a pioneering socio-environmental management consultancy that helps companies, organizations and governments to raise their ESG standard and generate a positive…” Source: RevenueBase Database · checked Sep 29, 2026
5	SEDEX	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	201-500	427 contacts →
	Partial evidence “Sedex is a global technology company that specialises in data, insights and professional services to empower supply chain sustainability.” Source: RevenueBase Database · checked Sep 29, 2026
6	SIPL	Indirect evidence	Noida, IndiaHQ checked Sep 29, 2026	n/a	400 contacts →
	Indirect evidence “SIPL Pvt Ltd is an established and reputed firm in the Sustainable domain since 2008.” Source: RevenueBase Database · checked Sep 29, 2026
7	EY Shinnihon LLC	Indirect evidence	千代田区, JapanHQ checked Sep 29, 2026	5,001-10,000	181 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
8	Stirrup Communication Consultants	Indirect evidence	Mumbai, IndiaHQ checked Sep 29, 2026	51-200	176 contacts →
	Indirect evidence “Stirrup Communication Consultants Pvt Ltd (Stirrup), previously known as AICL Communications Limited, is a corporate reporting, ESG, stakeholder communications consultancy.” Source: RevenueBase Database · checked Sep 29, 2026
9	Tennaxia	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	51-200	165 contacts →
	Indirect evidence “Since 2001 Tennaxia has accompanied industrial companies who are committed to a Corporate and Environmental Responsibility approach and/or who are facing challenges concerning…” Source: RevenueBase Database · checked Sep 29, 2026
10	EVEA	Indirect evidence	Nantes, FranceHQ checked Sep 29, 2026	51-200	164 contacts →
	Indirect evidence “Established in 2015, EVEA is a consulting firm, a software tools publisher, and a training organization.” Source: RevenueBase Database · checked Sep 29, 2026
11	Keramida INC	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 29, 2026	51-200	152 contacts →
	Partial evidence “Founded in 1988, KERAMIDA is a multidisciplinary Sustainability, EHS & Engineering consulting firm grounded in evidence-based research and development.” Source: RevenueBase Database · checked Sep 29, 2026
12	Greentree Global	Partial evidence	Noida, IndiaHQ checked Sep 29, 2026	51-200	143 contacts →
	Partial evidence “GreenTree Global is one of the leading Sustainability Consulting organisations providing Energy Efficiency & Climate Change Services like Integrated Sustainability Services…” Source: RevenueBase Database · checked Sep 29, 2026
13	Onepointfive Opf.Degree	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	11-50	133 contacts →
	Partial evidence “At OnePointFive we solve your sustainability focused business challenges by empowering your organization with expert-led solutions, embedded training, and cutting edge tools to…” Source: RevenueBase Database · checked Sep 29, 2026
14	DGE Sverige	Indirect evidence	Kalmar, SwedenHQ checked Sep 29, 2026	11-50	127 contacts →
	Indirect evidence “DGE i Sverige grundades 2004 med tydligt fokus på miljöfrågor, kundrelationer och medarbetare.” Source: RevenueBase Database · checked Sep 29, 2026
15	Esgauge	Indirect evidence	New York, United StatesHQ checked Sep 29, 2026	11-50	120 contacts →
	Indirect evidence “ESGAUGE is the help desk uniquely designed for the professional service firm seeking customized data on U.S.” Source: RevenueBase Database · checked Sep 29, 2026
16	KBS Certification Services LTD	Partial evidence	Faridabad, IndiaHQ checked Sep 29, 2026	51-200	107 contacts →
	Partial evidence “KBS Certification is a pioneer and global leader in Climate Change and Sustainability Services, supporting organizations worldwide in achieving compliance, credibility, and…” Source: RevenueBase Database · checked Sep 29, 2026
17	Normec Verifavia	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	51-200	105 contacts →
	Indirect evidence “Normec Verifavia is a global leader in environmental validation, verification, and auditing within the transport and industrial sectors.” Source: RevenueBase Database · checked Sep 29, 2026
18	ERM CVS	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	100 contacts →
	Indirect evidence “ERM CVS provides science-based, independent assurance, verification certification and training services for the world’s leading organizations.” Source: RevenueBase Database · checked Sep 29, 2026
19	AES Sustainability Consultants	Partial evidence	Tiverton, United KingdomHQ checked Sep 29, 2026	51-200	92 contacts →
	Partial evidence “AES Sustainability Consultants is a leading technical consultancy that delivers value engineered solutions across the homebuilding and construction industries.” Source: RevenueBase Database · checked Sep 29, 2026
20	Accountability	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	11-50	92 contacts →
	Indirect evidence “AccountAbility is a global advisory and standards firm that serves business, investors, governments, and multi-lateral organizations.” Source: RevenueBase Database · checked Sep 29, 2026
21	cemasys.com	Partial evidence	Oslo, NorwayHQ checked Sep 29, 2026	51-200	90 contacts →
	Partial evidence “We are a specialized sustainability system provider delivering solutions for the entire Environmental, Social & Governance (ESG) segment.” Source: RevenueBase Database · checked Sep 29, 2026
22	Olahkarsa	Partial evidence	Bandung, IndonesiaHQ checked Sep 29, 2026	11-50	90 contacts →
	Partial evidence “Olahkarsa provides comprehensive end-to-end corporate sustainability management, offering integrated solutions to help businesses achieve their Environmental, Social, and…” Source: RevenueBase Database · checked Sep 29, 2026
23	Dfge Institute For Energy, Ecology And Economy	Indirect evidence	Greifenberg, GermanyHQ checked Sep 29, 2026	11-50	85 contacts →
	Indirect evidence “Seit unterstützt die DFGE Unternehmen dabei, Nachhaltigkeit messbar und strategisch nutzbar zu machen.” Source: RevenueBase Database · checked Sep 29, 2026
24	Edge Impact	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	51-200	84 contacts →
	Indirect evidence “Edge Impact exists to create a world where unsustainable is unthinkable.” Source: RevenueBase Database · checked Sep 29, 2026
25	Malk Partners	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	51-200	84 contacts →
	Indirect evidence “Malk Partners is the foremost consultancy advising private equity firms to create and protect value through environmental, social, and governance (ESG) management.” Source: RevenueBase Database · checked Sep 29, 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: sustainability audit services. 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 sustainability audit services.
Partial evidence: Its own public description names part of sustainability audit services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability audit services. 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 3,693 sustainability audit services worldwide

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Sustainability audit services worldwide at a glance

As of Sep 29, 2026

31.3%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

3.0%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

2,711

11-50

790

51-200

137

201-500

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among sustainability audit services, 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 sustainability audit services are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “sustainability audit services”. 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 sustainability audit services), 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 sustainability audit services, 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, 8,328 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.

Sustainability audit services by location

28 lists · largest first

Every Sustainability audit services 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 sustainability audit services, 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 sustainability audit services are there worldwide?

RevenueBase identified 3,693 sustainability audit services 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?

Ecovadis, headquartered in Paris, tops this list with the largest team on record.

Which country has the most sustainability audit services?

The United States leads with 302 companies, followed by the United Kingdom (282) and India (260). Every sustainability audit services list by country and city is linked on this page.

Which city has the most sustainability audit services?

London leads with 110 headquartered companies, followed by Sao Paulo (60) and Paris (36).

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 8,328 verified decision-maker contacts tracked across these 3,693 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.