Company lists · Data refreshed November 2026

Top 25 Environmental defense organizations worldwide

RevenueBase identified 1,200 company matches for environmental defense organizations worldwide as of November 2026 and tracks 32,339 professional contacts across them, including 11,157 with verified work emails. The United States is the largest market and Washington the largest hub.

This list covers company matches for environmental defense organizations 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 November 6, 2026. Country and city lists for environmental defense organizations 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 Nov 6, 2026 How this list was built
1,200Companies
32,339Contacts tracked
11,157Verified emails
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The 25 largest environmental defense organizations worldwide

Ranked by team size
Top 25 of 1,200 company matches for environmental defense organizations worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchArlington, NC, United StatesHQ recorded Nov 6, 20265,001-10,0006,991 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchAmsterdam, NetherlandsHQ recorded Nov 6, 2026n/a3,207 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 · Nov 6, 2026 · View company records in RevenueBase
3Exact matchArlington, VA, United StatesHQ recorded Nov 6, 2026501-1,0001,622 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026501-1,0001,011 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSan Francisco, CO, United StatesHQ recorded Nov 6, 2026501-1,000733 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 · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLincoln, MA, United StatesHQ recorded Nov 6, 2026201-500575 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchUnited StatesHQ recorded Nov 6, 2026201-500436 contacts →

Exact match

“Oceana is the largest international advocacy organization dedicated solely to ocean conservation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchRochefort, FranceHQ recorded Nov 6, 2026201-500386 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500355 contacts →

Exact match

“We are a non-profit using the power of the law to bring about end-to-end systemic change: informing, implementing and enforcing the law, drafting and advising decision-makers on…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchCambridge, MA, United StatesHQ recorded Nov 6, 2026201-500256 contacts →

Exact match

“Our mission is to use rigorous, independent science to solve our planet's most pressing problems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchStockholm, SwedenHQ recorded Nov 6, 202651-200248 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchCali, ColombiaHQ recorded Nov 6, 202651-200240 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchTucson, AZ, United StatesHQ recorded Nov 6, 202651-200237 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchGloucester, MA, United StatesHQ recorded Nov 6, 202651-200237 contacts →

Exact match

“Seaside Sustainability is a nationally recognized, award-winning 501(c)3 charitable organization dedicated to community engagement, education and environmental conservation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchNew Delhi, IndiaHQ recorded Nov 6, 202651-200229 contacts →

Exact match

“The Centre for Science and Environment (CSE) is a public interest research and advocacy organisation based in New Delhi.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200224 contacts →

Exact match

“LCV believes our earth is worth fighting for because everyone has a right to clean air, water, and a safe, healthy community.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchRome, ItalyHQ recorded Nov 6, 202651-200198 contacts →

Exact match

“Legambiente is the most widespread environmental organization in Italy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSolna, SwedenHQ recorded Nov 6, 202651-200192 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBoston, MA, United StatesHQ recorded Nov 6, 202651-200187 contacts →

Exact match

“Since 1966, CLF has taken on powerful opponents who would pollute our air and water and squander our resources.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchWashington, OR, United StatesHQ recorded Nov 6, 202651-200178 contacts →

Exact match

“Our Purpose: Food & Water Watch mobilizes regular people to build political power to move bold & uncompromised solutions to the most pressing food, water, and climate problems of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHamburg, GermanyHQ recorded Nov 6, 2026201-500171 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchRadolfzell / Berlin, GermanyHQ recorded Nov 6, 202651-200150 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchOslo, NorwayHQ recorded Nov 6, 202651-200148 contacts →

Exact match

“The Bellona Foundation is an independent, non profit, science based environmental organization, founded in 1986.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchCarlton, AustraliaHQ recorded Nov 6, 202651-200141 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202611-50139 contacts →

Exact match

“EARTHWORKS is a nonprofit organization dedicated to protecting communities and the environment from the impacts of irresponsible mineral and energy development while seeking…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,200 environmental defense organizations worldwide

See the full list, filter by size, metro and specialty, and access 11,157 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental defense organizations worldwide at a glance

As of Nov 6, 2026
34.5%Verified-email coverage
26.9Average contacts per company
1-10Median size (employees)
2.3%Largest-city concentration · Washington
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
666
11-50
362
51-200
111
201-500
25
501-1,000
13
1,001-5,000
3
5,001-10,000
4
10001+
4

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 defense organizations are linked below.
What qualifies
Company records worldwide whose business descriptions match “environmental defense organizations” 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 11,157 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 November 6, 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 defense organizations by location

7 lists · largest first

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

How many environmental defense organizations are there worldwide?

RevenueBase identified 1,200 company matches for environmental defense organizations worldwide as of November 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 defense organizations?

The United States leads with 335 companies, followed by India (95) and France (56). Every environmental defense organizations list by country and city is linked on this page.

Which city has the most environmental defense organizations?

Washington leads with 28 company records, followed by New Delhi (12) and New York (11).

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 11,157 professional contacts with verified work emails tracked across these 1,200 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 November 6, 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.