Company lists · Data refreshed September 2026

Top 25 Esg strategy consulting firms based in the United States

Name: Esg strategy consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 8,079 companies tracked

RevenueBase identified 8,079 esg strategy consulting firms headquartered in the United States as of September 2026 and tracks 120,611 professional contacts across them, including 52,637 with verified work emails and 41,790 with mobile numbers. New York is the largest hub.

This list covers esg strategy consulting firms headquartered in the United States, 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 30, 2026.

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 30, 2026 86% judged on-target in blind review

8,079Companies

120,611Contacts tracked

52,637Verified emails

41,790Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest esg strategy consulting firms based in the United States

Ranked by team size

Top 25 of 8,079 esg strategy consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to esg strategy 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	WSP In The U.S	Indirect evidence	New York, NY, United StatesHQ checked Sep 30, 2026	10001+	9,318 contacts →
	Indirect evidence “What if you could shape built and natural environments – and the future of those that use them?” Source: RevenueBase Database · checked Sep 30, 2026
2	Kearney	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	5,001-10,000	6,978 contacts →
	Partial evidence “As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.” Source: RevenueBase Database · checked Sep 30, 2026
3	Accenture Strategy & Consulting	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	5,001-10,000	5,514 contacts →
	Partial evidence “Accenture Strategy combines deep industry expertise, advanced analytics capabilities and human-led design methodologies that enable clients to act with speed and confidence.” Source: RevenueBase Database · checked Sep 30, 2026
4	Strategy	Partial evidence	New York, NY, United StatesHQ checked Sep 30, 2026	1,001-5,000	5,082 contacts →
	Partial evidence “From strategy to execution.” Source: RevenueBase Database · checked Sep 30, 2026
5	L.E.K. Consulting	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	1,001-5,000	4,093 contacts →
	Indirect evidence “L.E.K.” Source: RevenueBase Database · checked Sep 30, 2026
6	APTIM	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,639 contacts →
	Indirect evidence “APTIM enhances the quality of the environment, wellbeing of people, resilience of communities, and opportunity for employees to make a difference, not just a living.” Source: RevenueBase Database · checked Sep 30, 2026
7	Frost & Sullivan	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,330 contacts →
	Indirect evidence “For over six decades, Frost & Sullivan has helped the world’s top companies toward transformational growth journeys that result in a stream of innovative growth opportunities.” Source: RevenueBase Database · checked Sep 30, 2026
8	Swca Environmental Consultants	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,629 contacts →
	Partial 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 30, 2026
9	Montrose Environmental Group	Partial evidence	Little Rock, AR, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,529 contacts →
	Partial 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 30, 2026
10	Sphera	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,349 contacts →
	Indirect evidence “Sphera creates a safer, more sustainable and productive world.” Source: RevenueBase Database · checked Sep 30, 2026
11	Adec Innovations	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 30, 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 30, 2026
12	Riveron	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,160 contacts →
	Indirect evidence “With over 1,200 professionals across 18 international offices, Riveron delivers tailored solutions for CFOs, private equity firms, and key stakeholders.” Source: RevenueBase Database · checked Sep 30, 2026
13	W3global	Strong evidence	Frisco, TX, United StatesHQ checked Sep 30, 2026	501-1,000	1,149 contacts →
	Strong evidence “W3Global is a leading provider of end-to-end consulting services, empowering businesses to achieve their strategic goals and optimize their operations.” Source: RevenueBase Database · checked Sep 30, 2026
14	OLA	Partial evidence	Austin, TX, United StatesHQ checked Sep 30, 2026	n/a	1,145 contacts →
	Partial evidence “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Source: RevenueBase Database · checked Sep 30, 2026
15	Verdantas	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 30, 2026	1,001-5,000	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 30, 2026
16	Apex Companies	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,137 contacts →
	Indirect evidence “Who is Apex?” Source: RevenueBase Database · checked Sep 30, 2026
17	CFGI	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	501-1,000	1,063 contacts →
	Indirect evidence “As a leading global accounting and business advisory firm, CFGI provides solutions to solve clients’ most complex problems, without the restrictions created by auditor…” Source: RevenueBase Database · checked Sep 30, 2026
18	IEA	Partial evidence	Brooklyn Park, MN, United StatesHQ checked Sep 30, 2026	n/a	982 contacts →
	Partial evidence “The Institute for Environmental Assessment, Inc.(IEA) is small business committed to providing trusted environmental safety consulting services for private and public…” Source: RevenueBase Database · checked Sep 30, 2026
19	Trinity Consultants	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	961 contacts →
	Indirect evidence “Trinity Consultants is a global team of experts helping organizations solve complex challenges in environmental compliance, ecological protection, infrastructure performance, and…” Source: RevenueBase Database · checked Sep 30, 2026
20	Alliance Technical Group	Indirect evidence	Decatur, AL, United StatesHQ checked Sep 30, 2026	1,001-5,000	956 contacts →
	Indirect evidence “Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Source: RevenueBase Database · checked Sep 30, 2026
21	Perella Weinberg	Indirect evidence	New York, NY, United StatesHQ checked Sep 30, 2026	501-1,000	883 contacts →
	Indirect evidence “Perella Weinberg is a leading global independent financial services firm, founded in 2006 to address the need for experienced, trusted and unconflicted advice in the financial…” Source: RevenueBase Database · checked Sep 30, 2026
22	Environmental Science Associates	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 30, 2026	501-1,000	732 contacts →
	Partial evidence “ESA is a 100% employee-owned environmental consulting firm.” Source: RevenueBase Database · checked Sep 30, 2026
23	The Cadmus Group	Strong evidence	Arlington, OR, United StatesHQ checked Sep 30, 2026	1,001-5,000	700 contacts →
	Strong evidence “Cadmus is a technology-empowered global strategic consulting firm that helps clients achieve their goals through transformative digital solutions and expertise across domains.” Source: RevenueBase Database · checked Sep 30, 2026
24	Clearview Healthcare Partners	Strong evidence	Newton, MA, United StatesHQ checked Sep 30, 2026	201-500	681 contacts →
	Strong evidence “Founded in Boston in 2007, ClearView Healthcare Partners is a diverse, inclusive, and innovative global strategy consulting firm serving the life science sector.” Source: RevenueBase Database · checked Sep 30, 2026
25	Uniqus Consultech INC	Partial evidence	San Jose, CA, United StatesHQ checked Sep 30, 2026	501-1,000	675 contacts →
	Partial evidence “Uniqus Consultech is an AI and global tech-enabled consulting company that specializes in Accounting & Reporting Consulting, Governance, Risk & Compliance, Sustainability &…” Source: RevenueBase Database · checked Sep 30, 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: esg strategy 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 esg strategy consulting firms.
Partial evidence: Its own public description names part of esg strategy consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name esg strategy 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 8,079 esg strategy consulting firms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 52,637 reachable decision-makers.

Free signup · no credit card

View the full list →

Esg strategy consulting firms based in the United States at a glance

As of Sep 30, 2026

43.6%Verified-email coverage

34.6%Mobile-number coverage

14.9Average contacts per company

1-10Median size (employees)

7.5%Largest-city concentration · New York

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

6,114

11-50

1,504

51-200

325

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 32.0d

15,3690–30

35,12431–60

1,74561–90

2790–180

372180+

Company record updated

Median 77.0d

00–30

25,40531–60

40,84561–90

47,18390–180

7,178180+

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 esg strategy 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “esg strategy 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 esg strategy 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 esg strategy consulting firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 52,637 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 30, 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.

Esg strategy consulting firms by metro

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 esg strategy 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 esg strategy consulting firms are there based in the United States?

RevenueBase identified 8,079 esg strategy consulting firms headquartered in the United States 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?

WSP In The U.S, headquartered in New York, tops this list with the largest team on record.

Which city has the most esg strategy consulting firms?

New York leads with 602 headquartered companies, followed by Chicago (230) and Washington (229).

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 52,637 verified decision-maker contacts tracked across these 8,079 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 30, 2026.

Ready to reach these companies? Verified emails and direct dials for all 8,079 esg strategy consulting firms based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Esg strategy consulting firms by geography

Browse the directory

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.