Company lists · Data refreshed September 2026

Top 25 Environmental conservation groups worldwide

RevenueBase identified 1,633 environmental conservation groups worldwide as of September 2026 and tracks 29,665 professional contacts across them, including 8,512 with verified work emails. The United States is the largest market and Paris the largest hub.

This list covers environmental conservation groups 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 19, 2026. Country and city lists for environmental conservation groups 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 19, 2026 86% judged on-target in blind review
1,633Companies
29,665Contacts tracked
8,512Verified emails
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The 25 largest environmental conservation groups worldwide

Ranked by team size
Top 25 of 1,633 environmental conservation groups worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental conservation groups: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceArlington, VA, United StatesHQ checked Sep 19, 20265,001-10,0006,526 contacts →

Indirect evidence

“Air, water, food, shelter, income: nature sustains every aspect of our lives.”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 19, 2026n/a2,945 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 19, 2026
3Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 2026501-1,000942 contacts →

Partial evidence

“NRDC is the nation's most effective environmental action organization.”

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceReston, VA, United StatesHQ checked Sep 19, 2026201-500585 contacts →

Partial evidence

“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…”

Source: RevenueBase Database · checked Sep 19, 2026
5Partial evidenceLincoln, MA, United StatesHQ checked Sep 19, 2026201-500554 contacts →

Partial evidence

“Mass Audubon is the largest nature-based conservation organization in New England.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceRochefort, FranceHQ checked Sep 19, 2026201-500352 contacts →

Indirect evidence

“La LPO a pour objet d'agir ou de favoriser les actions en faveur de la nature et de la biodiversité dans les domaines de la connaissance, l’expertise et la recherche; la…”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceBerlin, GermanyHQ checked Sep 19, 2026201-500262 contacts →

Indirect evidence

“Der NABU engagiert sich seit 1899 für Mensch und Natur.”

Source: RevenueBase Database · checked Sep 19, 2026
8Strong evidenceStockholm, SwedenHQ checked Sep 19, 202651-200246 contacts →

Strong evidence

“The Swedish Society for Nature Conservation (SSNC) is an environmental organization with power to bring about change.”

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceJakarta Selatan, IndonesiaHQ checked Sep 19, 202651-200230 contacts →

Indirect evidence

“Yayasan Konservasi Alam Nusantara (YKAN) adalah organisasi nirlaba berbasis ilmiah yang hadir di Indonesia sejak 2014.”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceTucson, AZ, United StatesHQ checked Sep 19, 202651-200219 contacts →

Indirect evidence

“At the Center for Biological Diversity, we believe that the welfare of human beings is deeply linked to nature, to the existence in our world of a vast diversity of wild animals…”

Source: RevenueBase Database · checked Sep 19, 2026
11Partial evidenceCali, ColombiaHQ checked Sep 19, 202651-200217 contacts →

Partial evidence

“WWF's Mission Statement To stop the degradation of the planet's natural environment and to build a future in which humans live in harmony with nature, by- conserving the world's…”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceWashington, DC, United StatesHQ checked Sep 19, 202651-200202 contacts →

Indirect evidence

“Defenders of Wildlife is dedicated to the protection of all native animals and plants in their natural communities.”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceSolna, SwedenHQ checked Sep 19, 202651-200188 contacts →

Indirect evidence

“Världsnaturfonden WWF kämpar för att skydda de mest hotade och unika arterna och livsmiljöerna på planeten.”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceHamburg, GermanyHQ checked Sep 19, 2026201-500161 contacts →

Indirect evidence

“Greenpeace ist eine internationale Umweltorganisation, die seit 50 Jahren mit gewaltfreien Aktionen für den Schutz der Lebensgrundlagen kämpft.”

Source: RevenueBase Database · checked Sep 19, 2026
15Partial evidenceBallarat, AustraliaHQ checked Sep 19, 202651-200161 contacts →

Partial evidence

“CVA is Australia’s leading conservation organisation, empowering people to take action for nature since 1982.”

Source: RevenueBase Database · checked Sep 19, 2026
16Partial evidencePetaluma, CA, United StatesHQ checked Sep 19, 202651-200160 contacts →

Partial evidence

“Point Blue Conservation Science (Point Blue) is dedicated to conserving birds, other wildlife, and ecosystems through innovative scientific research, restoration, outreach and…”

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceBogotá, ColombiaHQ checked Sep 19, 2026201-500158 contacts →

Indirect evidence

“Fundación Natura es una ONG sin ánimo de lucro creada en 1983, con la misión de conservar y recuperar la biodiversidad y los beneficios que esta presta a la sociedad en paisajes…”

Source: RevenueBase Database · checked Sep 19, 2026
18Partial evidenceToronto, ON, CanadaHQ checked Sep 19, 202651-200142 contacts →

Partial evidence

“Founded in 1967, World Wildlife Fund Canada is the country’s largest international conservation organization, with the active support of hundreds of thousands of Canadians.”

Source: RevenueBase Database · checked Sep 19, 2026
19Indirect evidenceCape Town, South AfricaHQ checked Sep 19, 202651-200136 contacts →

Indirect evidence

“WWF’s mission is to build a future in which people and nature thrive.”

Source: RevenueBase Database · checked Sep 19, 2026
20Indirect evidenceKøbenhavn Ø, DenmarkHQ checked Sep 19, 202651-200133 contacts →

Indirect evidence

“Danmarks Naturfredningsforening er Danmarks største natur- og miljøorganisation.”

Source: RevenueBase Database · checked Sep 19, 2026
21Strong evidenceCarlton, AustraliaHQ checked Sep 19, 202651-200131 contacts →

Strong evidence

“We’re the Australian Conservation Foundation, Australia’s national environment organisation.”

Source: RevenueBase Database · checked Sep 19, 2026
22Indirect evidenceRadolfzell / Berlin, GermanyHQ checked Sep 19, 202651-200126 contacts →

Indirect evidence

“Die Deutsche Umwelthilfe ist ein gemeinnütziger Natur, Umwelt- und Verbraucherschutzverband.”

Source: RevenueBase Database · checked Sep 19, 2026
23Partial evidenceVancouver, BC, CanadaHQ checked Sep 19, 202651-200123 contacts →

Partial evidence

“Through evidence-based research, education and policy analysis, the David Suzuki Foundation works to conserve and protect the natural environment, and help create a sustainable…”

Source: RevenueBase Database · checked Sep 19, 2026
24Indirect evidenceFranceHQ checked Sep 19, 202611-50119 contacts →

Indirect evidence

“Our mission : Protection and sustainable management of the coastline Surfrider Foundation Europe is a non profit organization, dedicated to defending, saving, improving and…”

Source: RevenueBase Database · checked Sep 19, 2026
25Indirect evidenceMadrid, SpainHQ checked Sep 19, 202651-200109 contacts →

Indirect evidence

“SEO/BirdLife (Sociedad Española de Ornitología) está orientada a cumplir la función social que nos mueve desde 1954: estudiar y conservar las aves y la naturaleza y divulgar sus…”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 1,633 environmental conservation groups worldwide

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Environmental conservation groups worldwide at a glance

As of Sep 19, 2026
28.7%Verified-email coverage
18.2Average contacts per company
1-10Median size (employees)
0.7%Largest-city concentration · Paris
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
957
11-50
459
51-200
146
201-500
36
501-1,000
12
1,001-5,000
7
5,001-10,000
2
10001+
3

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 environmental conservation groups, 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 environmental conservation groups are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “environmental conservation groups”. 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 environmental conservation groups), 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 environmental conservation groups, 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, 8,512 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 19, 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.

Environmental conservation groups by location

12 lists · largest first

Every Environmental conservation groups list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 environmental conservation groups, 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 environmental conservation groups are there worldwide?

RevenueBase identified 1,633 environmental conservation groups 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?

The Nature Conservancy, headquartered in Arlington, tops this list with the largest team on record.

Which country has the most environmental conservation groups?

The United States leads with 290 companies, followed by India (151) and France (90). Every environmental conservation groups list by country and city is linked on this page.

Which city has the most environmental conservation groups?

Paris leads with 12 headquartered companies, followed by Pune (12) and New Delhi (11).

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 8,512 verified decision-maker contacts tracked across these 1,633 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 19, 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.