Company lists · Data refreshed September 2026

Top 25 Environmental nonprofits worldwide

Name: Environmental nonprofits worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 23,163 companies tracked

RevenueBase identified 23,163 company matches for environmental nonprofits worldwide as of September 2026 and tracks 223,626 professional contacts across them, including 59,812 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for environmental nonprofits 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 September 19, 2026. Country and city lists for environmental nonprofits 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 Sep 19, 2026 How this list was built

23,163Companies

223,626Contacts tracked

59,812Verified emails

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

The 25 largest environmental nonprofits worldwide

Ranked by team size

Top 25 of 23,163 company matches for environmental nonprofits worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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	The Nature Conservancy	Exact match	Arlington, VA, United StatesHQ recorded Sep 19, 2026	5,001-10,000	6,526 contacts →
	Exact match “Air, water, food, shelter, income: nature sustains every aspect of our lives.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Greenpeace	Exact match	Amsterdam, NetherlandsHQ recorded Sep 19, 2026	n/a	2,945 contacts →
	Exact match “Greenpeace is comprised of 25 independent national/regional organisations in over 55 countries across Europe, the Americas, Africa, Asia and the Pacific, as well as a…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	RSPB	Exact match	Sandy, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,969 contacts →
	Exact match “Passionate about nature, dedicated to saving it.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	IUCN	Exact match	Gland, SwitzerlandHQ recorded Sep 19, 2026	501-1,000	1,965 contacts →
	Exact match “IUCN, the International Union for Conservation of Nature, helps the world find pragmatic solutions to our most pressing environment and development challenges.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Conservation International	Exact match	Arlington, VA, United StatesHQ recorded Sep 19, 2026	501-1,000	1,560 contacts →
	Exact match “Since 1987, Conservation International has worked to spotlight and secure the critical benefits that nature provides to humanity.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	World Resources Institute	Exact match	Washington, DC, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,359 contacts →
	Exact match “WRI works to improve people’s lives, protect and restore nature and stabilize the climate.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Environmental Defense Fund	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,352 contacts →
	Exact match “We are Environmental Defense Fund, a leading environmental nonprofit focused on stabilizing the climate while helping build strong and healthy communities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Casa Familiar	Exact match	Albuquerque, NM, United StatesHQ recorded Sep 19, 2026	n/a	1,132 contacts →
	Exact match “Casa Familiar is a primary/secondary education company based out of 501 Atrisco Dr Sw, Albuquerque, New Mexico, United States.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Sierra Club	Exact match	Oakland, CA, United StatesHQ recorded Sep 19, 2026	501-1,000	1,069 contacts →
	Exact match “At the Sierra Club, we believe in the power of togetherness.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Natural Resources Defense Council Nrdc	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	501-1,000	942 contacts →
	Exact match “NRDC is the nation's most effective environmental action organization.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Student Conservation Association	Exact match	Arlington, VA, United StatesHQ recorded Sep 19, 2026	201-500	795 contacts →
	Exact match “The Student Conservation Association (SCA) is the largest provider of hands-on environmental conservation programs for youth and adults.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	NWG S.P.A	Exact match	Prato, ItalyHQ recorded Sep 19, 2026	n/a	766 contacts →
	Exact match “Nata a Prato nel 2003 è oggi una delle più importanti realtà nel mercato della Green Economy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Groundwork	Exact match	Birmingham, United KingdomHQ recorded Sep 19, 2026	1,001-5,000	750 contacts →
	Exact match “Groundwork takes practical action to create a fair and green future in which people, places, and nature thrive.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Monterey BAY Aquarium	Exact match	Monterey, CA, United StatesHQ recorded Sep 19, 2026	501-1,000	738 contacts →
	Exact match “The mission of the nonprofit Monterey Bay Aquarium is to inspire conservation of the ocean.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Oxfam Novib	Exact match	The Hague, NetherlandsHQ recorded Sep 19, 2026	201-500	708 contacts →
	Exact match “Wij strijden voor gelijkheid en we staan achter de mensen die opstaan voor gelijkheid.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	CDP	Exact match	London, United KingdomHQ recorded Sep 19, 2026	501-1,000	702 contacts →
	Exact match “As the founder of environmental reporting, we believe in transparency and the power of data to drive change.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Earthjustice	Exact match	San Francisco, United StatesHQ recorded Sep 19, 2026	501-1,000	672 contacts →
	Exact match “Earthjustice is a non-profit public interest law organization dedicated to protecting the magnificent places, natural resources, and wildlife of this earth, and to defending the…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Ocean Park Corporation	Exact match	Hong Kong Island South, Hong KongHQ recorded Sep 19, 2026	1,001-5,000	628 contacts →
	Exact match “Vision Statement: A world where we take action to conserve our environment and grow positively with nature.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Centre For Alternative Technology	Exact match	Machynlleth, United KingdomHQ recorded Sep 19, 2026	n/a	618 contacts →
	Exact match “Mae Canolfan y Dechnoleg Amgen yn elusen addysg amgylcheddol sydd wedi bod yn rhannu atebion i faterion amgylcheddol ac ymchwilio iddyn nhw ers dros 50 mlynedd – gan weithio tuag…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	National Wildlife Federation	Exact match	Reston, VA, United StatesHQ recorded Sep 19, 2026	201-500	585 contacts →
	Exact match “As America's largest non-profit conservation organization, the National Wildlife Federation works closely with those who span the social and political spectrum, but who are…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Fauna & Flora	Exact match	Cambridge, United KingdomHQ recorded Sep 19, 2026	501-1,000	576 contacts →
	Exact match “Fauna & Flora's work spans across the globe, with over 100 projects in more than 40 countries.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Mass Audubon	Exact match	Lincoln, MA, United StatesHQ recorded Sep 19, 2026	201-500	554 contacts →
	Exact match “Mass Audubon is the largest nature-based conservation organization in New England.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	U.S. Green Building Council	Exact match	Washington, DC, United StatesHQ recorded Sep 19, 2026	201-500	553 contacts →
	Exact match “The U.S.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Trust For Public Land	Exact match	San Francisco, CA, United StatesHQ recorded Sep 19, 2026	201-500	531 contacts →
	Exact match “Trust for Public Land (TPL) is a national nonprofit that works to connect everyone to the benefits and joys of the outdoors.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Biotope	Exact match	Mèze, FranceHQ recorded Sep 19, 2026	201-500	517 contacts →
	Exact match “Fondée en 1993 par des passionnés de nature engagés, Biotope s’est imposée au fil des années comme précurseur et leader mondial de l’ingénierie environnementale et de la…” Recorded in the RevenueBase company graph · Sep 19, 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 “environmental nonprofits”. 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 23,163 environmental nonprofits worldwide

See the full list, filter by size, metro and specialty, and access 59,812 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Environmental nonprofits worldwide at a glance

As of Sep 19, 2026

26.7%Verified-email coverage

9.7Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

15,712

11-50

5,584

51-200

1,248

201-500

315

501-1,000

101

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 environmental nonprofits are linked below.
What qualifies: Company records worldwide whose business descriptions match “environmental nonprofits” 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 59,812 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 September 19, 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.

Environmental nonprofits by location

86 lists · largest first

Every Environmental nonprofits 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 “environmental nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental nonprofits are there worldwide?

RevenueBase identified 23,163 company matches for environmental nonprofits worldwide as of September 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?

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

Which country has the most environmental nonprofits?

The United States leads with 5,243 companies, followed by India (1,394) and Brazil (1,191). Every environmental nonprofits list by country and city is linked on this page.

Which city has the most environmental nonprofits?

London leads with 356 company records, followed by Paris (222) and New York (195).

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 59,812 professional contacts with verified work emails tracked across these 23,163 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 September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 23,163 environmental nonprofits worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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 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.